Patricia N O'Sullivan, M.D.

Primary specialty

Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X

License

220836 Issued in MA

Practice address

Beth Israel Deaconess Medical Center
300 Brookline Avenue
Boston, MA 02215

Phone

(617) 667-7000

NPI assigned

Jan 9, 2006

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Rosebud Indian Health Service

  • Ambulatory Surgical Clinic/Center
  • Rosebud, SD
  • NPI 1790955128
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1136764800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1760460844",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "60 GLEN ROAD",
            "address_2": "APT 201W",
            "city": "BROOKLINE",
            "state": "MA",
            "postal_code": "024457331",
            "telephone_number": "617-277-1283"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "BETH ISRAEL DEACONESS MEDICAL CENTER",
            "address_2": "300 BROOKLINE AVENUE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02215",
            "telephone_number": "617-667-7000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'SULLIVAN",
        "first_name": "PATRICIA",
        "middle_name": "N",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-01-09",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "MA",
            "license": "220836",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Isabel O'Sullivan
• Jillian O'Sullivan
• Kevin Fitzpatrick O'Sullivan
• Mairead O'Sullivan, DPT, PT
• Matthew Peter O'Sullivan, ATC
• Aoibhlinn Mary O'Toole, MB BCH BAO
• Jean Anne O'Toole, P.T.
• Sangki Oak, MD
• Christina Estelle Oakes
• Kathleen Oakes, MD

• Geriatric Medicine (Internal Medicine) Physician in Boston, MA
• Providers in Boston, MA by specialty
• Geriatric Medicine (Internal Medicine) Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.