Nicholas Geiger Richwagen, MD

Primary specialty

General Practice PhysicianTaxonomy code 208D00000X

License

MD-24081-0 Issued in HI

Practice address

36065 Santa Fe Ave
Fort Hood, TX 76544-5060

Phone

(254) 288-8000

NPI assigned

Apr 28, 2022

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1651104000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757376000000",
    "number": "1548905110",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "36065 SANTA FE AVE",
            "city": "FORT HOOD",
            "state": "TX",
            "postal_code": "765445060",
            "telephone_number": "254-288-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "36065 SANTA FE AVE",
            "city": "FORT HOOD",
            "state": "TX",
            "postal_code": "765445060",
            "telephone_number": "254-288-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Jarrett White Rd",
            "address_purpose": "LOCATION",
            "city": "Tripler Army Medical Center",
            "state": "HI",
            "postal_code": "968595001",
            "country_code": "US",
            "telephone_number": "808-433-6341",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RICHWAGEN",
        "first_name": "NICHOLAS",
        "middle_name": "GEIGER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-28",
        "last_updated": "2025-09-09",
        "certification_date": "2025-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "HI",
            "license": "MD-24081-0",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "HI",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cristy D Rhodes, BSN, RN
• Martha N Ricaldi, LCSW
• Howard Mark Richman, DPM
• Suzanne Barnes Richman, RN
• Jordan Richter, MD
• Mark Landers Riddle, DO
• Derek L Riley
• Shanae Trion Riley, PHARM. D.
• Haley Brooke Ritchie, CNA
• Ian Riter, D.O.

• General Practice Physician in Fort Hood, TX
• Providers in Fort Hood, TX by specialty
• General Practice Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 2025; 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.