Margaret Marie Thorsen, MD

Primary specialty

Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X

License

MD19402 Issued in RI

Practice address

101 Plain St FL 6
Providence, RI 02903-4829

Phone

(401) 274-1122

Fax

(401) 453-7622

NPI assigned

Jun 10, 2019

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

Electronic endpoints 1

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

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mthorsen@direct.carene.org

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.

• Affinity Physicians LLC.

  • Internal Medicine Physician
  • Warwick, RI
  • NPI 1184944662

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Affinity Physicians LLC

  • Anesthesiology Physician
  • Providence, RI
  • NPI 1053038471
  NPD
• Women & Infants Hospital of Rhode Island

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1447233788
  NPD (past)

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

{
    "created_epoch": "1560124800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789948800000",
    "number": "1366001836",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "455 TOLL GATE RD",
            "address_2": "PRC AND CREDENTIALING",
            "city": "WARWICK",
            "state": "RI",
            "postal_code": "028862759",
            "telephone_number": "401-273-0641",
            "fax_number": "401-273-2919"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 PLAIN ST FL 6",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029034829",
            "telephone_number": "401-274-1122",
            "fax_number": "401-453-7622"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "101 Dudley St",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029052499",
            "country_code": "US",
            "telephone_number": "401-274-1122",
            "fax_number": "401-453-7622",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2 Dudley St Ste 580",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029053244",
            "country_code": "US",
            "telephone_number": "401-274-1122",
            "fax_number": "401-453-7684",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "90 Plain St",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029034817",
            "country_code": "US",
            "telephone_number": "401-274-1122 x47457",
            "fax_number": "401-277-3694",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THORSEN",
        "first_name": "MARGARET",
        "middle_name": "MARIE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-06-10",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "RI",
            "license": "MD19402",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mthorsen@direct.carene.org",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "101 Dudley St",
            "city": "Providence",
            "state": "RI",
            "country_code": "US",
            "postal_code": "029052499",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Rebecca Thomson
• Sonya Thorne
• Wesley Clarke Thorne, MD
• Teresa Mary Thornton, LICSW
• Linda Jean Thorp, RN, CARN
• Matthew James Thran, MD
• Alexa Threats
• Thrive Therapy Services LLC (Thrive Therapy Services)
• Thriving Together LLC
• David Robbins Tien, MD

• Maternal & Fetal Medicine Physician in Providence, RI
• Providers in Providence, RI by specialty
• Maternal & Fetal Medicine Physician in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 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.