Athanasios Vassilopoulos, MD

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

3021648 Issued in MA

Practice address

60 Fenwood Rd
Boston, MA 02115-6128

Phone

(617) 732-5500

Fax

(617) 732-5766

NPI assigned

May 15, 2023

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 RI

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 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Interoperability endpoints

• Direct secure messaging: avassilopoulos206489@brownhealth.medalliesdirect.net

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.

• Lifespan Corporation

  • Children's Rehabilitation Hospital
  • Providence, RI
  • NPI 1790221232
  NPD
• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497
  NPD (past)

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

{
    "created_epoch": "1684108800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782777600000",
    "number": "1194415927",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "60 FENWOOD RD",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156128",
            "telephone_number": "617-732-5500",
            "fax_number": "617-732-5766"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "60 FENWOOD RD",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156128",
            "telephone_number": "617-732-5500",
            "fax_number": "617-732-5766"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VASSILOPOULOS",
        "first_name": "ATHANASIOS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-05-15",
        "last_updated": "2026-06-30",
        "certification_date": "2026-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "MA",
            "license": "3021648",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Louvelin Maria Vasquez, LICSW
• D'Mani Andre Vass
• Susan A Vassallo, MD
• Kimberley O Vassar
• Cashana Tyveshe Vassell
• Stephanos Vassilopoulos, MD
• Jennifer J Vasterling, PH.D.
• Sivabalan Vasudavan, BDSC MDSC MORTHRCS
• Anant Vasudevan, M.D.
• Ananya Vasudevan, MD, MBA

• Rheumatology Physician in Boston, MA
• Providers in Boston, MA by specialty
• Rheumatology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 30, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.