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Meet our providers

Rebecca Alexander, FNP-C
Ms. Alexander holds certifications as a family nurse practitioner and a wound ostomy continence nurse specialist. She received her master’s degree from Stony Brook University School of Nursing and has worked in private physician practice, home care and long-term care settings.

Shawn A. Berkowitz, M.D., CMD
Dr. Berkowitz is board certified in family medicine and geriatric medicine. Prior to joining Summit ElderCare, he provided primary care, geriatric consultations, and geriatric teaching and leadership to both educational and practice programs in upstate New York. He completed both his family practice residency and geriatric fellowship at United Health Services Hospitals (now UHS Hospitals) in New York. He is a certified medical director in long-term care through the American Medical Directors Association (now AMDA—Dedicated to Long Term Care Medicine). He earned his undergraduate degree from Cornell University and his medical degree from St. George’s University.

Tanya D. Campus, M.D.
A family and geriatric medicine clinician, Dr. Campus brings both home care and nursing home experience to the Summit ElderCare team. A graduate of the Jefferson Medical College of Thomas Jefferson University in Philadelphia, she completed her residency at Maine-Dartmouth Family Medicine in Augusta, Maine. Dr. Campus also completed her geriatric fellowship there. Before joining Summit ElderCare, she was the Medical Director of Sebasticook Valley Home Care and practiced at the Pittsfield Health Care Center, both in Pittsfield, Maine. She is board certified in family medicine, geriatric medicine, and hospice and palliative care.

Nicole Carville, A.N.P., G.N.P.
Prior to joining Summit ElderCare, Ms. Carville served as a nurse practitioner for a community medical office and as a registered nurse for a home health agency. She also provided nursing care to adult medical-surgical oncology patients in an area acute-care hospital. In addition to holding a master’s degree from the Graduate School of Nursing at the University of Massachusetts Worcester, she is both a certified adult nurse practitioner and gerontological nurse practitioner.

Shenbagam Dewar, M.D.
Dr. Dewar is a board certified family medicine specialist with special interest and additional expertise in the older adult. A graduate of Madras Medical College in Madras, India, she earned a master’s degree at the University of Texas at Arlington. She completed her family practice residency at the Robert Wood Johnson Medical School in New Jersey and the University of Connecticut. As part of her work with Boston University Medical Center’s primary care and nursing home practices, she helped develop a medical home initiative. Just prior to joining Summit ElderCare, she worked at a community health center, where she developed additional expertise in bariatric medicine.

Alison W. Grover, M.D., M.P.H.
Dr. Grover, a board certified geriatrician, received her education at Saint Lawrence University, Temple University School of Medicine and the State University of New York at Albany. She completed her training at the University of Massachusetts Medical Center and the University of Connecticut Health Center. After spending time in upstate New York with the National Health Service, she cared for older patients in the Greater Hartford area in academic settings, office practices and, most recently, a private home-care practice. She has held teaching appointments and has lectured on many geriatric topics.  

Susan Hardy, M.D., Ph.D., AGSF
A board certified geriatrician, Dr. Hardy earned her medical degree at the University of Pittsburgh and completed her internal medicine training at Duke University and her geriatric fellowship at Yale University. After caring for older patients in various settings and conducting clinical research at Pittsburgh, she joined Summit ElderCare to concentrate on patient care and quality improvement projects. As an Associate Medical Director at Summit ElderCare, Dr. Hardy uses her clinical and research expertise to help the program remain a national leader in providing high-quality, effective and efficient care for participants.

Judith E. Lengeiza, M.S.N., ANP-C
Ms. Lengieza is a certified adult primary care nurse practitioner with additional certification in hospice and palliative care. She is responsible, in collaboration with the primary care physicians, for providing primary and acute medical care for program participants at all Summit ElderCare sites. With more than 20 years of nursing experience, she has been involved with adult primary care, preventive health care, urgent care and care of frail elders. She received her master’s degree in nursing from Simmons College in Boston and her bachelor’s degree in nursing from Marquette University in Milwaukee.

Anthony A. Pellegrino, M.D.
A well-known Worcester-area primary care physician, Dr. Pellegrino is a graduate of the Massachusetts Institute of Technology, the University of Massachusetts Medical School and the Internal Medicine Residency Program of St. Vincent Hospital. He is board certified in internal medicine and has developed significant expertise with older adults through his primary care work at Reliant Medical Group and UMass Memorial Medical Center. More recently he served as a consultant to the psychiatry programs at Westborough State Hospital and UMass Memorial. In addition to his work at Summit ElderCare, Dr. Pellegrino is the Chief Medical Officer for the Disaster Medical Assistance Team MA-2, which is part of the National Disaster Medical System. With the DMAT team, he provided medical care for those affected by Hurricanes Katrina and Sandy, among others.

Glenn R. Randall, M.D., M.P.H.
Dr. Randall brings many years of clinical practice experience to the Central Massachusetts community. He is a graduate of Washington University in St. Louis, Rush Medical College in Chicago and the School of Public Health at the University of California Berkeley. Prior to joining the Summit ElderCare team, he practiced in a large multispecialty practice in Massachusetts and in a private practice in California. Dr. Randall is board certified in geriatrics, internal medicine, and hospice and palliative care. In addition to his Summit ElderCare practice, Dr. Randall is a geriatric consultant with Fallon’s NaviCare program.

Ann-Marie (Amy) Sullivan, M.S.N., BC-APRN
Ms. Sullivan worked in several Worcester-area practices before joining the Summit ElderCare provider team, including Reliant Medical Group and IPC Hospitalist of New England (Parkview Hospital). Certified as an adult nurse practitioner by the American Nurses Credentialing Center, she brings expertise in preoperative assessment, pulmonary care, and primary care to Summit ElderCare participants. She earned her master’s degree in nursing at the Massachusetts General Hospital Institute of Health Professions and was an instructor in nursing at Worcester State University.

Ronald Vallario, M.D.
As an Associate Medical Director at Summit ElderCare, Dr. Vallario provides primary medical care while helping to lead Summit ElderCare’s quality and performance improvement programs and initiatives. A family and geriatric clinician, he previously worked in a rural health clinic in Vermont. He earned a master’s degree in social work from the University of South Carolina, attended the Robert Wood Johnson Medical School and completed his family practice residency at the University of North Carolina. He holds board certifications in both family and geriatric medicine and has held teaching appointments at medical schools in New Jersey and Vermont.

David Wilner, M.D., FACP, AGSF
Dr. David Wilner, a clinician and educator in geriatric medicine, is a graduate of Tufts University College of Liberal Arts and Tufts University School of Medicine. Dr. Wilner holds the position of Coordinator of Geriatric Medicine Training in the Department of Medicine at Saint Vincent Hospital at Worcester Medical Center. He is an associate professor in the Division of Geriatrics at the University of Massachusetts Medical School, and a fellow of both the American College of Physicians and the American Geriatrics Society. Dr. Wilner is a PACE physician and the Summit ElderCare medical director.

Susan I. Zangarine, ANP-BC
Ms. Zangarine, certified as an adult, community and geriatric nurse practitioner, received her nursing degree from Fitchburg State College and her master’s degree from the Graduate School of Nursing at the University of Massachusetts Worcester. Prior to joining Summit ElderCare, she worked in United Health’s Evercare program and in a primary care practice. She enjoys teaching nursing and is a member of the American Academy of Nurse Practitioners and the Geriatric Nurse Practitioners of America. 

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What people are saying about Summit ElderCare

"The doctors are wonderful. The nurses, aides and everyone who works here all help to make me feel so much better than I did before I joined. I love the personal touch that the staff has."—Pat, Summit ElderCare participant