Ryan J Sullivan, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

254184 Issued in MA

Practice address

55 Fogg Road
Weymouth, MA 02190

Phone

(781) 624-8000

Fax

(781) 878-6750

NPI assigned

Jun 1, 2010

Last updated

Jun 18, 2026By the provider in NPPES

Sex

Male

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

Enrolled in MA, NH2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Emergency Medicine

Education

Tufts University School of Medicine, 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Coastal Medical AssociatesGroup PAC ID 7113029257, 443 clinicians

Brockton Hospital, Inc.Group PAC ID 4082504733, 36 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Upper Connecticut Valley Hospital Hospital, Colebrook, NH, CCN 301300
• South Shore Hospital Hospital, South Weymouth, MA, CCN 220100

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ryan.sullivan@direct.signature.masshiway.net

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

• Brockton Hospital, Inc.

  dba Signature Healthcare Brockton Hospital

  • General Acute Care Hospital
  • Brockton, MA
  • NPI 1063431286
  Medicare reassignment Care Compare group NPD
• Coastal Medical Associates

  • Anesthesiology Physician
  • Weymouth, MA
  • NPI 1932175684
  Medicare reassignment Care Compare group NPD
• Androscoggin Valley Hospital Inc

  dba AVH Surgical Associates

  • General Practice Physician
  • Berlin, NH
  • NPI 1679526644
  Medicare reassignment NPD
• Androscoggin Valley Hospital, Inc.

  • Critical Access Hospital
  • Berlin, NH
  • NPI 1386680593
  Medicare reassignment NPD
• Upper Connecticut Valley Hospital Association

  • Critical Access Hospital
  • Colebrook, NH
  • NPI 1861489437
  Medicare reassignment NPD
• Weeks Medical Center

  • Rural Health Clinic/Center
  • Whitefield, NH
  • NPI 1508819566
  Medicare reassignment NPD
• Steward Emergency Physicians, Inc

  • Emergency Medicine Physician
  • Ayer, MA
  • NPI 1780971275
  Medicare reassignment
• Weeks Medical Center

  • Critical Access Hospital
  • Lancaster, NH
  • NPI 1265536718
  Medicare reassignment
• Brockton Hospital, Inc.

  dba Signature Healthcare Pharmacy - EB

  • Community/Retail Pharmacy
  • East Bridgewater, MA
  • NPI 1033084462
  NPD
• Signature Healthcare Medical Group Inc

  dba Signature Medical

  • Internal Medicine Physician
  • Brockton, MA
  • NPI 1508804949
  NPD
• Androscoggin Valley Hospital, Inc.

  • Medicare Defined Swing Bed Hospital Unit
  • Berlin, NH
  • NPI 1134266679
  NPD
• Weeks Medical Center

  • Rural Health Clinic/Center
  • Lancaster, NH
  • NPI 1003820838
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• South Shore Hospital Inc.

  • General Acute Care Hospital
  • South Weymouth, MA
  • NPI 1134227606
  Care Compare affiliation
• Upper Connecticut Valley Hospital Association

  • Critical Access Hospital
  • Colebrook, NH
  • NPI 1861489437
  Care Compare affiliation

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

{
    "created_epoch": "1275350400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781740800000",
    "number": "1477873412",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FOGG ROAD",
            "city": "WEYMOUTH",
            "state": "MA",
            "postal_code": "02190",
            "telephone_number": "781-624-8000",
            "fax_number": "781-878-6750"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FOGG ROAD",
            "city": "WEYMOUTH",
            "state": "MA",
            "postal_code": "02190",
            "telephone_number": "781-624-8000",
            "fax_number": "781-878-6750"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SULLIVAN",
        "first_name": "RYAN",
        "middle_name": "J",
        "name_prefix": "Mr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-06-01",
        "last_updated": "2026-06-18",
        "certification_date": "2026-06-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MA",
            "license": "254184",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Jeanne Sullivan, NP
• Joyce M Sullivan, OTR
• Julie Armstrong Sullivan, SLP
• Kathleen Connelly Sullivan, MS, PA-C
• Maria Catherine Sullivan
• Sean Sullivan, RN
• Richard Dong Sun, MD
• Kristin M Sunkin, M.A.
• Lea Swan, DPT
• Stacey Szklut

• Emergency Medicine Physician in Weymouth, MA
• Providers in Weymouth, MA by specialty
• Emergency Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.