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Executive & Medical Leadership

Featured Pages

Read about our leadership team who have devoted their professional lives to building a community healthcare system that works.

  • Assaad Sayah, MD, FACEP - Chief Executive Officer

    Assad Sayah,MDAssaad Sayah, MD, was named CHA's Chief Executive Officer in January 2020. Dr. Sayah, the health system's chief medical officer, served as the interim CEO since June 2019. He previously served as Chief Medical Officer since 2013 and was Chief of Emergency Medicine and Senior Vice President of Primary Care at CHA

    Dr. Sayah's leadership has been a critical component of CHA's growth and success over the past decade. Before being named the chief medical officer, he served as the chief of emergency medicine and senior vice president of primary care. In the Emergency Department, Dr. Sayah led tremendous advancements at all three CHA hospitals, resulting in enhanced efficiency, quality, volume and patient satisfaction. He spearheaded primary care growth by more than 50 percent, expanding CHA's access in underserved communities and integrating primary care and behavioral health services and systems to address social determinants of health. He also plays a key role in CHA's commitment to the communities it serves, including his tenure as the co-chair of the Cambridge City Manager's Opioid Working Group established in 2018 to develop recommendations for strengthening the city's response to the opioid epidemic.

    Additionally, Dr. Sayah served as chairman of CHA's Chiefs Council and president of the CHA Medical Staff, and he continues to serve on the faculty at Harvard Medical School. His research and publications focus on Emergency Department operation and emergency medical services, including design of the EMS system, continuous quality improvement, advanced directives, violence and weapons, disaster planning and pre-hospital thrombolytics.

    Prior to joining CHA, Dr. Sayah held leadership roles at several area hospitals, including director of EMS for Brigham and Women's Hospital, associate chief for the Department of Emergency Medicine at St. Elizabeth's Medical Center and chairman of the Department of Emergency Medicine at Caritas Good Samaritan Medical Center. He received his medical doctorate from the University of Massachusetts Medical Center and completed his residency in emergency medicine at William Beaumont Hospital in Michigan.

  • Renée Kessler - Executive Vice President and Chief Operating Officer

    Renee KesslerRenée Kessler joined CHA in 2014 as Executive Vice President and Chief Operating Officer, bringing a 25-year record of operations leadership experience. During her career, Renée has been a leader, mentor, and team player, achieving success in a range of large and complex hospital environments that care for vulnerable populations.

    From 2007-2014, Renée served as Chief Operating Officer of Saint Thomas Midtown Hospital, a 683-bed urban teaching hospital in Nashville, TN. In this role she was responsible for all patient care operations, including quality and safety, staff and physician satisfaction, and overall budget, productivity, and cost performance. During her tenure, the hospital's operating margins grew from 5% to 8.6%. She also directed a four-year effort to achieve Voluntary Protection Program status through the Occupational Safety and Health Administration focused on employee safety, which was secured in 2012, making Saint Thomas Midtown the first Tennessee hospital and 14th in the United States to achieve this distinction.

    Prior to her work in Nashville, Renée served as the Chief Operating Officer/Administrator at Mountainside Hospital in Montclair, NJ, a 350-bed community teaching hospital. She led a significant financial turnaround spurred by revenue enhancement and program growth that saw the hospital achieve break-even cash flow two years ahead of schedule. She also developed a strategic plan that resulted in program and volume growth and the recruitment of new physicians in various service lines.

    Kessler earned her bachelor's degree in English from the University of Michigan and a master's degree in health care administration from Ohio State University.

  • Maren Batalden, MD, MPH - Chief Quality Officer

    Dr. Maren Batalden

    Maren Batalden, MD, MPH, is the chief quality officer at CHA. Maren has played a key role at CHA for many years, previously serving as associate chief quality officer before assuming interim CQO responsibilities in November 2019.

    She has provided leadership for improvement projects focused on inpatient care, care transitions and cross-continuum population health for patients with chronic disease. She created and continues to direct the CHA-Gold Innovation Fellowship Program, which provides a platform for CHA clinicians and leaders to grow their skills in improvement science and change management.

    As part of the Incident Command team that guided CHA's COVID-19 response, Dr. Batalden provided compassionate and critical leadership to help build CHA’s inpatient capacity, apply evidence-based and data-driven solutions, develop modeling to forecast resource needs, and establish policies and protocols to ensure CHA delivered the very best care to our patients and communities. Dr. Batalden is clinically active as a hospitalist and has represented the CHA medical staff as a member of CHA’s Board of Trustees. She is a national authority on using the lens of co-production to create effective partnerships between patients and care teams.

    Dr. Batalden completed her undergraduate education at St. Olaf College in Minnesota and earned a master’s degree in public health from the University of North Carolina at Chapel Hill. She graduated from Harvard Medical School and completed an internal medicine residency at Brigham and Women’s Hospital. Dr. Batalden is an assistant professor of medicine at HMS, where she teaches quality, safety and systems improvement.

  • Jill Batty - Chief Financial Officer

    Jill BattyJill Batty joined CHA as Chief Financial Officer in 2014. With more than 20 years of experience as a strategist, financial executive, and health care consultant, Ms. Batty has worked with a wide variety of providers, hospitals, and physician practices, including those in safety net and integrated health systems.

    Prior to joining CHA, Ms. Batty served as Senior Vice President of Finance and Chief Financial Officer of Cheshire Medical Center/Dartmouth-Hitchcock in Keene, New Hampshire. Her work there helped the organization transition from fee-for-service care to population health management, effectively adapting to state and federal reimbursement shifts while generating significant operating margin improvements.

    Ms. Batty's mission-driven values extend beyond the workplace. She serves as a volunteer for several organizations including Monadnock Family Services and New Hampshire Voices for Health. She holds a bachelor's from the University of Illinois and a master's from the University of Iowa. She has been a certified public accountant since 1989 and is a fellow in the Healthcare Financial Management Association.

  • David Bor, MD - Chief Academic Officer

    David Bor, MD, serves as the first ever Chief Academic Officer at CHA, working to strengthen the organization's teaching and research programs. He is also the Charles S. Davidson Associate Professor of Medicine at Harvard Medical School.

    Dr. Bor served as CHA's Chief of Medicine for 21 years during which time he trained, mentored, and recruited hundreds of providers and leaders. Since joining CHA in 1981, Dr. Bor has made major contributions as a clinician, teacher, and administrative leader. This has included advancing patient care by spearheading new programs for HIV/AIDS, tuberculosis, and community-based primary care. As the Chief of Medicine he recruited outstanding primary care and specialty teams. He also co-founded both the Cambridge "Health of the City" program and the Institute for Community Health, which have focused on childhood obesity, men's health, and substance abuse.

    In the academic arena, Dr. Bor has worked with hundreds of young physicians, fostering an environment of learning, sharing, and innovation. These efforts have earned him the HMS Dean's Award for Community Service, the A. Clifford Barger Award for Excellence in Mentoring, and membership in the HMS Academy. He played a critical role in developing the academic relationships that CHA has with HMS, Harvard School of Public Health, Harvard School of Dental Medicine, and Tufts University School of Medicine.

    Dr. Bor's work includes helping create a new clinical practice model for CHA, the Patient- Centered Medical Home, which will improve both patient care and reduce medical costs. This effort is key to CHA's transformation to an Accountable Care Organization, furthering the vision that patient-centered, coordinated, high value care is not only possible but sustainable for CHA and its communities.

  • Traci Brooks, MD - Interim Chief of Pediatrics

    Dr. Brooks assumed the role of Interim Chief of Pediatrics on September 10, 2021. She is the medical director at CHA Cambridge Pediatrics and all three school-based health centers in Cambridge, Somerville and Everett. She is an exceptional clinician who is dedicated to helping children develop healthy habits to carry with them into adulthood. Traci practices both Adolescent Medicine and General Pediatrics, giving her great insight into the needs of the department.

  • Lora Council, MD, MPH, Vice President, Primary Care and Medical Staff President

    Dr. Lora CouncilLora Council, MD, MPH, is an accomplished leader in ambulatory care, with expertise in patient-centered care delivery transformation, coordination of care and standardization of best practices across healthcare systems. Her experience training, advocating for and measuring team-based care is being put to good use helping CHA achieve its goals of enhancing patient experience and boosting population health while reducing costs and improving the work life of healthcare providers and staff. Named Senior Medical Director in 2017, Dr. Council accepted the role of Vice President in 2021. She provides strategic and operational leadership for the primary care service line while working to define and implement clinical and operational objectives and set the strategy for the ongoing transformation of CHA services. Previously the Senior Vice President of the Primary Care Service Line for Dartmouth-Hitchcock, Dr. Council earned her medical degree from University of Massachusetts Medical School, and her MPH at the Dartmouth Institute for Health Policy and Clinical Practice. During her Residency in Family Medicine at Dartmouth, she completed the Leadership Preventive Medicine Residency at Dartmouth-Hitchcock, a unique program in quality improvement, leadership and population health. She is board certified in both Family Medicine and Preventive Medicine and is a practicing family physician.

  • Joy Curtis - Chief Human Resources Officer

    Joy CurtisJoy Curtis is a trusted advisor, coach, problem solver, and experienced human resources executive. She is the President and Founding Principal of the Human Resources consulting firm, Innovative Solutions HR, LLC. where she has worked extensively with clients in healthcare, higher education and professional services firms. Ms. Curtis founded Innovative Solutions HR, LLC. in 1994.

    From 2005 until 2009, Ms. Curtis served as the Chief People Office at the international law firm, Ropes & Gray LLP where she founded "the People Organization." She was responsible for firm- wide Professional development, legal recruiting, human resources operations, secretarial services, travel, event planning and support for the firm's pro bono activities. In 2009, the organization was voted the best firm to work by associates across the United States in the Vault Survey.

    Prior to founding Innovative Solutions, Ms. Curtis was Vice President, Human Resources at Lawrence & Memorial Hospital in New London, CT, and at Newton-Wellesley Hospital in Newton, MA. She was a member of the Senior Management Teams and responsible for managing human capital. Ms. Curtis has over 25 years of in-depth experience in all aspects of human resources management.

    Ms. Curtis earned her bachelor’s from Yale University and her Master in Business Administration, with high honors, from Boston University. She is a certified coach through Martha Beck, Inc. and is a certified Career Invention coach. She has earned the designation of Senior Professional, HR, (SPHR) from The Society of Human Resource Management.

    In her spare time, she follows her passion for animals by working with animal rescue groups and is a founder and a member of the Board of Directors of the Massachusetts Union for Siberian Huskies, Inc.

  • Andrew M. Fuqua - General Counsel

    Andrew FuquaAndrew Fuqua has served as CHA’s Senior Vice President and General Counsel since 2013. Mr. Fuqua's responsibilities include advising the Board of Trustees and all levels of management and staff on a broad range of health law and general corporate issues, including governance, regulatory compliance, contract, labor and employment, pension, tax, licensure, real estate, accreditation, insurance, patient care, and professional staff matters. Mr. Fuqua began his legal career as an associate at Choate, Hall & Stewart before joining CHA as Associate General Counsel in 2006. Before law school, he taught high school history. He is a graduate of Princeton University and the Boston University School of Law.

  • Kathleen Harney, MD - Chief of Obstetrics/Gynecology and Women's Health

    Harney, MDKathleen Harney, MD, is the chief of Obstetrics & Gynecology at CHA, a position she has held since 2003. In this capacity Dr. Harney provides physician leadership for the Cambridge and Somerville Women's Health Centers, ob/gyn practices at the East Cambridge Health Center and Revere Family Health Center, as well as the Labor and Delivery Suite and Birth Center at Cambridge Hospital. Dr. Harney sees patients at the Cambridge Women's Health Center.

    Dr. Harney joined CHA in 1999, initially as the director of pediatric and adolescent gynecology. Prior to that she was an attending physician in the Division of Pediatric and Adolescent Gynecology at Tufts Medical Center.

    Dr. Harney is a graduate of the Tufts University School of Medicine, and received her bachelor's from Harvard University. She received her ob/gyn training at the Tufts-New England Medical Center combined program in Obstetrics and Gynecology.

  • Brian Herrick, MD - Chief Information Officer

    Brian Herrick, MDBrian Herrick, MD, was named CHA’s Chief Information Officer in 2019. Dr. Herrick first joined CHA in 2010 as the Senior Director of Clinical Informatics and became Chief Medical Information Officer in 2012. As the senior physician responsible for overseeing the IT department's collaboration with patients, clinicians, operations, quality, compliance and researchers, he has played an essential part in improving patient quality and provider satisfaction with the clinical tools they depend on.

    His accomplishments including launching a number of new features in CHA's MyChart patient portal, which gives patients active in the system better control to manage their health, and guiding CHA through the many stages of Meaningful Use, ensuring that the organization has achieved the highest level of payments from this incentive program. He has also worked with regional healthcare leaders to create a standard in the Epic function Care Everywhere to promote inter-organizational information exchange to benefit patient care.

    Dr. Herrick completed his medical degree at Dartmouth Medical School, family medicine residency at the University of Rochester, a fellowship in faculty development at the University of California at San Francisco and a certificate in biomedical informatics from Oregon Health and Science University. He completed his board certification in clinical informatics in 2017.

  • Jeffrey Hoffman, MD, FACS - Chief Medical Officer

    Dr. Jeffery HoffmanJeffrey Hoffman, MD, FACS, was named CHA’s Chief Medical Officer in 2021. Dr. Hoffman came to CHA from The Southeast Permanente Medical Group (TSPMG, the physician arm of Kaiser Permanente in Atlanta). In his most recent role as Medical Director, Contracting and Network Management, he managed and negotiated professional and facility contracts as well as cultivating the relationships and the performance of contracted network providers. From 2016-2020, Dr. Hoffman served as the Chief Operating Officer at TSPMG, where he aligned primary and specialty care while developing a new operating and reporting structure for the entire region. Prior to his role as COO, he was the Associate Medical Director of Specialty Care, where he oversaw all specialty services and started and grew 20 new specialty departments. A practicing otolaryngologist with a specialty in endocrine surgery, Dr. Hoffman served as Chief of Otolaryngology Head and Neck Surgery at TSPMG from 1993-2008.

    He is a graduate of the Columbia University College of Physicians and Surgeons and did his surgical internship at Beth Israel Medical Center in New York followed by an otolaryngology residency at Massachusetts Eye and Ear Infirmary.

  • Carol Hulka, MD - Chief of Radiology

    Carol Hulka, MD, MBASince 2001, Dr. Carol Hulka has been Chief of the Department of Radiology at CHA, and Associate Clinical Professor of Radiology at Harvard Medical School.

    Dr. Hulka received her bachelor's from Brown University and her medical doctorate from Duke University. She completed her medical internship at Beth Israel Hospital and trained as a resident in Radiology at the Brigham and Women's Hospital. Dr. Hulka was an Imaging Fellow at Massachusetts General Hospital. She remained on staff at Massachusetts General Hospital for several years where she published in the field of women's imaging. She initiated and developed the Breast MRI program at MGH for which she was awarded state and federal grant funding.

    During her staff appointment at BIDMC, she completed her Master of Business Administration at Boston University, where she was selected for membership in the Beta Gamma Sigma Society for academic achievement. Dr. Hulka had the opportunity to use this education when offered the position of Chief of Radiology at CHA. Since that time, she has expanded the professional practice from the CHA Cambridge Hospital site to include CHA Somerville Campus and CHA Everett Hospital. Dr. Hulka has overseen transformation of the department to a state-of-the-art facility that is 100% digital (PACS) and paperless, using voice recognition for instant report turnaround. It was one of the first facilities in the area to have digital mammography at all sites and in 2009 was named a Breast Imaging Center of Excellence by the American College of Radiology.

    Dr. Hulka remains active in many Radiologic Societies with roles as Past President of several imaging societies and as a reviewer of scientific presentations and journals. She continues to support radiology education programs with the Harvard Medical School students and rotating residents.

  • Ryan Lee, DDS, MPH - Chief of Dental Medicine

    Ryan Lee, DDS, MPH, joined CHA as Chief of Dental Services in 2021. In this role, Dr. Lee oversees CHA’s dental clinics, community outreach programs and General Practice Dental Residency.

    Dr. Lee is a double-fellowship credentialed dentist with specialized training in dental implantology, full-mouth reconstruction, oral oncology, IV sedation and dental sleep medicine.

    Dr. Lee earned a bachelor’s degree at Northwestern University and master's degrees at Harvard University and A.T. Still University, focusing on public health policy and management. He then completed his doctorate at New York University, graduating with honors and serving as president of the American Student Dental Association. Subsequently, he completed a general practice residency at Jersey City Medical Center (NJ), followed by a two-year fellowship in dental oncology at Memorial Sloan Kettering Cancer Center (NY). From 2012-2015, he served as an assistant professor with the Department of Oral and Maxillofacial Pathology, Radiology and Medicine at NYU College of Dentistry.

    As a major in the U.S. Army National Guard, in which he’s served since 2010, Dr. Lee played a key role in the COVID-19 pandemic response. In April 2020, he was activated to lead 18 Massachusetts Army National Guard strike teams and help train 300 soldiers who, under his supervision, partnered with the Mass. Department of Public Health to administer more than 30,000 COVID-19 tests in nursing homes, hospitals, veterans’ homeless shelters and mental health facilities.

    Dr. Lee has published research extensively in peer-reviewed academic journals, delivered dozens of presentations to a range of organizations and is a member of several professional societies. Each year he travels to Haiti and northeast Asia to lecture at medical and dental schools and provide free dental care for the underserved. He is a board member of For Hope International, an organization committed to sustainable health improvement in Haiti.

  • Joe Mackey, MD - Chief of Anesthesia

    John Mackey, MDJoe Mackey, MA, was named CHA’s chief of anesthesia in 2015. Since joining CHA, Dr. Mackey has been instrumental in orchestrating a seamless transition of the service. He continues to focus on improving the efficiency of the OR, particularly on-time surgical starts and seamless team communication, which are initiatives tightly linked to patient experience of care and staff satisfaction.

    Dr. Mackey is an anesthesiologist with Anaesthesia Associates of Massachusetts, PC. Prior to joining CHA, he served as the director of anesthesia for Boston Medical Center's Moakley Ambulatory Surgery Center and also served as the chairman for the Department of Anesthesia at Saints Memorial Medical Center from 2005-2007.

  • Ben Milligan, MD, FACEP - Chief of Emergency Medicine

    Benjamin Milligan, MDBenjamin Milligan, MD, FACEP is chief of emergency medicine at Cambridge Health Alliance (CHA). CHA's Department of Emergency Medicine serves nearly 100,000 patients annually at the Cambridge and Everett Emergency Departments as well as the Urgent Care located at the CHA Somerville campus.

    Dr. Milligan is also an assistant professor in the Department of Emergency Medicine at Harvard Medical School. Prior to joining CHA, Dr. Milligan was a clinical instructor in Emergency Medicine at the Alpert Medical School of Brown University and an attending emergency medicine physician at the Miriam Hospital in Providence, Rhode Island.

    He received his medical degree from Weill Cornell Medical College (Cornell University) and completed his Emergency Medicine Residency at New York University/Bellevue Hospital Center.

  • Rebecca Osgood, MD - Chief of Pathology

    Rebecca Osgood, MD

    Rebecca Osgood, MD, is Chief of Pathology at CHA. She has been part of CHA for 27 years and has contributed greatly to the Department's work including initiating the project of electronic reporting of reportable infectious diseases to the MADPH from Microbiology Laboratory and bringing molecular infectious disease testing to CHA providers. Dr. Osgood has provided outstanding oversight of the Somerville Campus laboratory services, the Microbiology section of CHA laboratories, and has served as Medical Director of the Spaulding Hospital Cambridge Clinical Laboratories. She is also currently the Medical Director of MIT Health Services Clinical Laboratory. Dr. Osgood is an Instructor in Pathology at Harvard Medical School. She is a Clinical Associate in Pathology at Massachusetts General Hospital. Prior to joining CHA, Dr. Osgood was the Medical Director of Microbiology at Beth Israel Hospital.

    Dr. Osgood serves on the Executive Board of the Massachusetts Society of Pathologists and is a representative of the House of Delegates for the College of American Pathologists. Dr. Osgood is part of the Global Pathology group at the Massachusetts General Hospital. She is a member of the College of American Pathologists, Massachusetts Society of Pathologists, the American Society of Clinical Pathologists, and the American Society of Cytology. Dr. Osgood interests are infectious disease pathology and cytopathology. Dr. Osgood is dedicated to providing excellent pathology and laboratory services to providers and the patients of the CHA community.

    Outside CHA, Dr. Osgood is the mother of four children and married to an orthopedic surgeon, Dr. Thomas Hoerner. She has participated in many community projects. She has volunteered her services as a pathologist along with her husband with Health Volunteers Overseas, a nonprofit organization that is dedicated to improving the availability and quality of health care through training and education. With this organization, she has worked in Cambodia, Tanzania, and Costa Rica.

    Dr. Osgood is a graduate of the Weil Cornell Medical College and completed her pathology residency training at MGH. She received her bachelor’s from Smith College and graduated Magna Cum Laude and Phi Beta Kappa.

  • Richard Pels, MD - Chief of Medicine

    Richard Pels, MDRichard Pels, MD, was appointed to the position of Chief of Medicine at CHA in 2017. Dr. Pels has been with CHA since 1983, serving in numerous leadership roles including associate chief of medicine, president of the medical staff, director of the Internal Medicine Residency program, director of graduate medical education and most recently, interim Chief of Medicine.

    Dr. Pels graduated summa cum laude from Duke University and received his medical doctorate from the University of Florida. He completed primary care internal medicine residency training at CHA and fellowship training in general medicine and medical education at Harvard Medical School. His special interest areas are refugee health, chronic pain and medical education. Dr. Pels is the recipient of many prizes and awards including the A. Clifford Barger Excellence in Mentoring Award at HMS, CHA’s Medical Staff Lifetime Achievement Award and the Parker J. Palmer Courage to Teach Award from the Accreditation Council for Graduate Medical Education.

  • David Porell - Chief Administrative Officer, CHA Physician Organization

    David Porell, MDFor more than 20 years, David J. Porell has held senior management roles in both academic and community hospital settings. He currently serves as the Chief Administrative Officer for the Cambridge Health Alliance Physician Organization (CHAPO). He has administrative responsibility for all functions of CHAPO including contracting, billing and coding, accounting and finance, physician recruitment, human resources, and provider enrollment. Mr. Porell has overseen significant improvements in revenue cycle measures for charge capture, reduced charge lag, and collection rates. Under his leadership, CHAPO's financial performance improved by nearly 20% in FY10.

    Prior to assuming his current position in 2006, Mr. Porell was CHA's Vice President of Clinical Services, successfully managing several key clinical programs including the launch of a new Sports Medicine program, enhancement of the existing Occupational Health program, and management of the $20 million radiology equipment upgrade plan.

    Mr. Porell previously held roles as Vice President for Support Services and Associate Vice President for Rehabilitation Services at Morton Hospital and Medical Center, and he served as Supervisor of Outpatient Services for Physical Therapy at Massachusetts General Hospital.

    He earned his undergraduate degree at the University of New Hampshire, a master's in physical therapy from the University of Southern California, and a master's in business administration with concentrations in health care management and finance from Boston University.

  • Gerald Steinberg, MD - Senior Vice President, Network Development & Interim Chief of Orthopedics

    Jerry SteinbergGerald Steinberg, MD, is Senior Vice President of Network Development, working to develop new partnerships that benefit CHA's patients and communities. Dr. Steinberg previously served as CHA's Chief Medical Officer and Chief Medical Quality Officer. Before coming to CHA in 2005, he was Senior Vice President and Chief Quality Officer of UMass Memorial Health Care. He also served as interim Chairman of the Department of Orthopedics at the University of Massachusetts Medical School, where he was the school's Feigenbaum Distinguished Professor of Quality, and as Chief Medical Officer of UMass Memorial Health Care.

    Dr. Steinberg is an AOA graduate of the Albert Einstein College of Medicine and received his bachelor’s, cum laude, from Rutgers University where he was a Henry Rutgers Scholar. He received his orthopedic training in the Harvard Combined Orthopedic Program after completing a Research Fellowship at Harvard.

  • Laura Sullivan, MD - Chief of Family Medicine

    Laura Sullivan, MD Laura Sullivan, MD, was named CHA’s chief of family medicine in 2017. Dr. Sullivan joined CHA in 2006 as the medical director of the East Somerville Health Center. She then became the medical director at the Malden Family Medicine Center in 2008 and later served as interim chief of family medicine. Dr. Sullivan was a staff physician at both sites and has held many leadership positions including president and secretary/treasurer of the CHA medical staff. She has played a key role in CHA’s transition to an accountable care organization and the implementation of the patient-centered-medical-home model of care.

    As chief of family medicine, Dr. Sullivan is responsible for helping the department grow, improving its systems and access and supporting the training for the next generation of physicians as part of the Tufts University Family Medicine Residency program in Malden.

    Dr. Sullivan is an assistant clinical professor at Tufts University School of Medicine. She received her medical doctorate from Chicago Medical School and completed the University of Massachusetts Worcester Family Medicine Residency. Prior to joining CHA, Dr. Sullivan worked with various vulnerable populations as a locum tenens physician, in rural Washington state, the Massachusetts state prison system and Plumley Village Health Services, part of UMass Memorial Health Care.

  • Siva Vithiananthan, MD - Chief of Surgery

    Siva Vithiananthan, MD,Siva Vithiananthan, MD, FACS, FASMBS, FICS, joined CHA as chief of surgery in 2021. Prior to CHA, Dr. Vithiananthan led a clinical practice in minimally invasive and robotic approaches to gastrointestinal diseases, complex hernias and bariatric (weight loss and metabolic) surgery at Brown Physicians Inc. and Brown Surgical Associates in Providence, R.I., and was the chief of bariatric and minimally invasive surgery at The Miriam Hospital and medical director of the Center for Bariatric Surgery at The Miriam and Rhode Island Hospitals. Dr. Vithiananthan was also a professor of surgery, clinician educator at the Warren Alpert Medical School of Brown University and the site-director of the Brown Surgical Residency and Medical Student Programs at The Miriam Hospital. His main research focus is on social determinants of healthcare and the metabolic and physiological effects of weight loss surgery.

    Having served in leadership capacities in many national and international surgical societies, Dr. Vithiananthan has been invited around the world to offer his expertise in training surgeons. He was nominated by the International College of Surgery to serve as the inaugural surgical ambassador in minimally invasive surgery to Nanjing Medical University in Nanjing, China. He has trained hundreds of surgeons in China, Sri Lanka, and Hungary in the techniques of minimally invasive surgery over the last decade.

    Dr. Vithiananthan is board certified in general surgery and surgical critical care and fellowship trained in advanced laparoscopic surgery and surgical critical care. He received his medical degree from Columbia University College of Physicians and Surgeons in New York. He completed his residency at Baystate Medical Center in Springfield, Mass., and fellowships at New York Presbyterian Hospital and the University of Connecticut School of Medicine/Hartford Hospital.

  • Philip Wang, MD, DrPH - Chief of Psychiatry

    Philip Wang, MDPhilip Wang, MD, DrPH, arrived at CHA in September 2019 as the health system's Chief of Psychiatry. Dr. Wang manages the department's clinical operations for both inpatient and outpatient services, including efforts to strengthen its coordination and integration with primary care and other clinical services. In addition, he oversees the Department's academic programs, including training and research.

    Dr. Wang most recently served as the deputy medical director and director of research of the American Psychiatric Association. In this role, he was responsible for developing and expanding practice resources for the more than 37,000 psychiatrists of the association. Preceding this position, Dr. Wang was the deputy director of the National Institute of Mental Health (NIMH). There, he assisted in overseeing 1,300 NIMH staff and approximately $1.5 billion spent annually on basic, translational and clinical research focused on prevention, recovery and cures.

    Dr. Wang currently serves as Professor of the Practice in the Department of Psychiatry at Harvard Medical School. He has authored publications in leading medical journals and conducted national and global psychiatric epidemiology studies and pharmacoepidemiologic research as well as clinical trials to test new interventions. Dr. Wang was a member of the APA DSM-V Task Force and has consulted on several APA Work Groups that developed evidence-based treatment guidelines.

    Dr. Wang completed his undergraduate degree in biochemistry, medical school, psychiatry residency and chief residency, as well as a master's and doctoral degree in epidemiology, at Harvard.

  • Lanie Ward, MBA, BSN, RN - Chief Nursing Officer

    Lanie Ward

    Lanie Ward, MBA, BSN, RN, was appointed chief nursing officer at CHA in October 2020 after serving as interim chief nursing officer. Lanie, who has more than 30 years of experience in healthcare administration, has served in senior nursing roles in organizations across the country.

    Prior to joining CHA, Lanie was the system senior vice president of patient care services/CNO at Summa Health System in Ohio. Summa serves more than one million patients in Ohio through comprehensive acute, critical, emergency, outpatient and long-term/home-care settings and has more than 1,300 licensed beds. At Summa, she brought nursing together system-wide to standardize care, practice and shared governance. Additionally, under her leadership, Summa Akron City & St Thomas Hospitals achieved Magnet designation and redesignation.

    Before her time at Summa, Lanie was the chief nursing officer at Broward Health Medical Center in Florida. Broward is a nonprofit community health system that encompasses more than 30 healthcare facilities with four hospitals. At Broward Health, Lanie played a key role in the design and execution of a $165 million hospital expansion.

    She received her master’s degree in business administration from Florida Atlantic University and her bachelor’s degree in nursing from the University of Kentucky.

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