Skip to main content
Mary Ellen O'Brien, MD, Internal Medicine, Weymouth, MA

Mary EllenO'BrienMD

Internal Medicine • Weymouth, MA

Hospital Medicine/Hospitalist

Physician

Join to view full profile

Dr. O'Brien is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

See Dr. O'Brien's full profile

Already have an account?

  • Office

    55 Fogg Rd
    Weymouth, MA 02190
    Phone+1 781-624-8000
    Fax+1 781-682-5627

Education & Training

  • Brown University
    Brown UniversityResidency, Internal Medicine, 2008 - 2010
  • Brown University
    Brown UniversityInternship, Internal Medicine, 2007 - 2008
  • Rutgers Robert Wood Johnson Medical School
    Rutgers Robert Wood Johnson Medical SchoolClass of 2007

Certifications & Licensure

  • MA State Medical License
    MA State Medical License 2010 - 2025
  • RI State Medical License
    RI State Medical License 2007 - 2010
  • American Board of Internal Medicine Internal Medicine

Dr. Mary Ellen O'Brien, Dr. Mary Ellen O'Brien, MD, Dr. M O'Brien