• Plymouth Bay Medical Associates

    An independent primary care physician group comprised of 16 primary care physicians who are patient focused and quality driven. Plymouth Bay Medical Associate physicians offer many conveniently located offices to make it easy for patients to travel to and from appointments. Each of our offices is easy to find, well-designed and surrounded by ample parking. Many of these locations offer appointments for new patients within 48 hours. We are affiliated with Beth Israel Deaconess Plymouth and with Tufts Medical Center. Our partnership with Tufts Medical Center makes it easy for you to access additional specialty services and physicians when the need arises.

  • COVID-19


    As we prepare to enter the next phase of the COVID-19 (the name of the disease caused by the new coronavirus) pandemic, we continue to be here for you. We would like to take this opportunity to encourage you to check in with your primary care team. We want to hear from you. We are ready and equipped to care for your health needs while keeping you healthy and safe.

    We want to answer some questions you may have about your primary care.

    Is my doctor’s office open?

    Yes, your primary care practice is available to take your call. We are able to address many of your current health needs and provide high quality and safe care using video conferencing or phone (often referred to as telemedicine). In addition, we know that some concerns are better addressed in person. We have designated several practices throughout eastern Massachusetts where in-person visits are available. These practices, like your primary care practice, are a part of Beth Israel Lahey Health, and are safe environments to receive care for any matters that we are unable to appropriately address via telemedicine.

    Should I wait to seek care?

    No, your primary care team is here to work with you to manage your health and support your quality of life. If you have a chronic medical condition like diabetes, heart disease, hypertension, depression, asthma or COPD, your concerns about COVID-19 may have kept you from seeking care in recent months. We want to assure you that we have created safe and accessible ways to care for you, please call us so we can determine which type of visit best fits your needs.

    What if I have COVID-19 symptoms?

    Please call us if you are experiencing mild or moderate symptoms (such as cough, shortness of breath or difficulty breathing, fever, chills, muscle pain, sore throat, new loss of taste or smell). These symptoms may or may not be consistent with COVID-19 infection and we can take care of you. Testing, when appropriate, may be available; and can be coordinated through your primary care practice.

    Please know that we are here for you!

    If you develop signs of illness, or if you have any questions or concerned about your overall health, do not hesitate to call us. As a reminder, always call 911 if you are experiencing a life-threatening medical emergency. Our priority is to provide you with patient-centered, high quality and safe care. Your primary care team is ready to take care of your chronic health needs and to maintain your overall health during this time of stress and anxiety.

    Thank you for entrusting us with your care and for helping us navigate this public health emergency. We will be in touch again soon to let you know more about how we plan to keep our patients safe as we resume more frequent in-person care. We care deeply about your health and safety and look forward to hearing from you soon.


  • PBMA Leadership

    Mitchell Oliver, MD


    Quality & ACO MedicalDirector

    Eric Johnson, MD
    Vice President

    Deb Zona, RN, MHA, CMCN,FACHE

    Director of Operations and Quality

  • Plymouth Bay Medical Associate Physicians are members of an ACO


    ACO Participants
    Most Plymouth Bay Medical Associate Physicians participate in an Accountable Care Organization (ACO), NEQCA ACO, LLC under a Shared Savings Program as defined by CMS. Our goal is to provide, Medicare fee-for-service beneficiaries with high quality service and care, while reducing the growth in expenditures through enhanced care coordination. Accountable Care Organizations improve coordination and communication among physicians and other providers which helps improve care and lower costs for Medicare beneficiaries.
    For more information please visit: http://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/ACO/index.html
  • PBMA offers Central Referral Management

    Taking care of our enrolled population in the best manner possible will enable us to provide more efficient, effective and patient centric health care.
    This means being able to provide the right care, at the right time, at the right place, by the right provider, and at the right cost.
    Our referral specialists are knowledgeable, detail orientated and trained in customer service.
    If you need a referral please call 508-747-5888

  • We offer After Hours Coverage for our patients 
    Call your primary care physician office to schedule an appointment

  • Plymouth Bay Medical Associates Team of Quality Physicians

    Internal Medicine

    Halward M. Blegen, III, MD
    Internal Medicine
    110 Long Pond Road, Suite 205
    Plymouth, Ma. 02360
    Phone (508)888-7221

    Christopher E. Coakley, MD, FACEP, FACP
    Internal Medicine
     45 Resnick Road, Suite 303
    Plymouth Ma. 02360
    Phone (508)746-7858

    Stephen R. Dube, MD

    Cardiology; Internal Medicine

    110 Long Pond Road, Suite212
    Plymouth, Ma. 02360
    Phone (508) 746-7272

    David Gannon, MD

    Primary Care & Pain Management

    68 North Main Street, Suite 1
    Carver, MA 02330
    Phone (508) 747-7246

    Raafat I. Hanna, MD
    Internal Medicine; Endocrinology
    110 Long Pond Road, Suite 110
    Plymouth Ma. 02360
    Phone (508) 747-0041 

    Tharwat A. Hanna, MD

    Internal Medicine

    435 Furnace Street
    Marshfield, Ma. 02050
    Phone (781) 834-4234

    Christopher C. Harootunian, DO

    Internal Medicine

    3 Carver Square, Main Street
    Carver, Ma. 02330
    Phone (508) 866-7722

    Eric E. Johnson, MD

    Cardiology; Internal Medicine

    45 Resnik Road, Suite 202
    Plymouth, Ma. 02360
    Phone (508) 746-0754

    Piotr Lazowski, MD

    Internal Medicine; Nephrology

    47 Obery Street, Suite 1A
    Plymouth, Ma.02360
    Phone (508) 747-4883

    Brian J. McManus, MD

    Cardiology; Internal Medicine

    110 Long Pond Road, Suite 212
    Plymouth, Ma. 02360
    Phone (508) 746-7272

    Katherine A. MurrayLeisure,MD

    Infectious Disease

    Internal Medicine

    116 Court St., 3rd FloorSuite 6
    Plymouth, Ma. 02360
    Phone (508) 746-2138

    Robert G. Nahill, MD

    Internal Medicine;

    Pulmonary Medicine

    116 Court Street
    Plymouth, Ma. 02360
    Phone (508) 747-1318

    Mitchell L. Oliver, MD
    Internal Medicine; Gastroenterology
    110 Long Pond Road, Suite 212
    Plymouth, Ma. 02360
    Phone (508) 746-7272

    Robert E. Olson,MD

    Internal Medicine; Cardiology

    110 Long Pond Road, Suite 212
    Plymouth Ma. 02360
    Phone (508) 746-7272

    James P. Wargovich, MD
    Pulmonary & Internal Medicine
    116 Court Street
    Plymouth, Ma. 02360
    Phone (508) 747-1318

    John M. Wengryn, MD

    Pulmonary & Internal Medicine

    Medical Director,

    Critical Care Center

    116 Court Street
    Plymouth, Ma. 02360
    Phone (508) 747-1318

  • At Plymouth Bay Medical Associates our core belief is that a doctor-patient relationship is a partnership that should provide continuity of care for all stages and ages of life. We believe that accessibility, compassion and communication are all vital to successfully partnering with our patients. Our team of highly skilled, experienced physicians has a vested interest in serving their patients that extends beyond their practice specialties; they live in the very communities they serve, and they are united by a common goal: Quality patient care. Each of our physicians takes the time to get to know his or her patients, developing relationships based on trust and service. Our goal is to help you to maintain optimal health or manage chronic medical issues and to provide you with comprehensive and trusted medical resources.

  • Quality Initiatives

     PBMA Quality Staff  and our physician office Quality Teams coordinate efforts to help the group achieve  better health and quality care for their patients. PBMA deploys resources and programs necessary for our group of physicians to achieve these goals. These programs aim to improve care for patients such as those with diabetes and high blood pressure, as well as promote preventative care such as increasing  cancer screenings and well child  care.
  • Top Doctors 2016

    Cape Cod Magazine and Castle Connolly Medical recognized 20 local physicians as "Top Doctors" in a recent issue of the magazine. Two of these "Top Doctors" are PBMA physicians:
    Critical Care- Dr. John Wengryn
    Pulmonary- Dr. Robert Nahill

    Dr John Wengryn

    Top Doctor 2016


    Dr. Robert Nahill

    Top Doctor 2016