Joseph Byung Hoon An, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A202356 Issued in CA

Practice address

4610 X St Ste 4202
Sacramento, CA 95817-2200

Phone

(167) 036-7569

NPI assigned

Mar 29, 2022

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in VA

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

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.

• Signify Health, LLC

  • General Practice Physician
  • Dallas, TX
  • NPI 1689158487

  VA

  Medicare reassignment NPD

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

{
    "created_epoch": "1648512000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756598400000",
    "number": "1649910654",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4610 X ST STE 4202",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958172200",
            "telephone_number": "167-036-7569"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4610 X ST STE 4202",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958172200",
            "telephone_number": "167-036-7569"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AN",
        "first_name": "JOSEPH",
        "middle_name": "BYUNG HOON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-29",
        "last_updated": "2025-08-31",
        "certification_date": "2025-08-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101280507",
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "VA",
            "license": "0101280507",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A202356",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ezra A Amsterdam, M.D.
• Josephine Amurao
• Esther Amuyunzu-Ramirez, M.D.
• Amwest Transport
• Gregory I Amy
• Lige An, BCBA
• Minh Thu Ngoc An, M.D.
• Rachel Elizabeth An
• Sophia An
• Matthew Anable

• Internal Medicine Physician in Sacramento, CA
• Providers in Sacramento, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 31, 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.