Larissa Fern Weir, M.D.

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

010636680A Issued in IN

Practice address

9300 Dewitt Loop
Ft Belvoir, VA 22060-5285

Phone

(571) 231-3224

NPI assigned

May 25, 2007

Last updated

Dec 16, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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 IN

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

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

{
    "created_epoch": "1180051200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765843200000",
    "number": "1528279866",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9300 DEWITT LOOP",
            "city": "FT BELVOIR",
            "state": "VA",
            "postal_code": "220605285"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9300 DEWITT LOOP",
            "city": "FT BELVOIR",
            "state": "VA",
            "postal_code": "220605285",
            "telephone_number": "571-231-3224"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WEIR",
        "first_name": "LARISSA",
        "middle_name": "FERN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-25",
        "last_updated": "2025-12-16",
        "certification_date": "2025-12-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IN",
            "license": "010636680A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tanya Watson, PHD
• Jennifer June Weaver, M.D.
• Cole D Weeks, LCSW
• McKenna Weeks, OTR/L
• Peter J Weina, M.D.
• Yana Weir, EMT-B
• Trevor Wellington, MD
• Clinton Nelson Wells, MD
• Vivianne Cisneros Wersel
• Joy Healon Jean Westermeier, LCSW

• Obstetrics & Gynecology Physician in Fort Belvoir, VA
• Providers in Fort Belvoir, VA by specialty
• Obstetrics & Gynecology Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 16, 2025; 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.