Stefan a Unterhalter MD a Medical Corp

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

A33152 Issued in CA

Legal business name

STEFAN A UNTERHALTER MD A MEDICAL CORP

Practice address

9001 Wilshire Blvd Ste 201
Beverly Hills, CA 90211-1840

Phone

(310) 274-2722

Fax

(310) 275-1082

NPI assigned

Feb 26, 2007

Organization subpart

No

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

Authorized official

Name

Stefan Andrew Unterhalter, M.D.NPI 1619023249

Title

President

Phone

(310) 274-2722

Specialties & licenses 1

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Stefan Andrew Unterhalter, M.D.

  • Nephrology Physician
  • Beverly Hills, CA
  • NPI 1619023249
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1172448000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1771286400000",
    "number": "1437285269",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9001 WILSHIRE BLVD STE 201",
            "city": "BEVERLY HILLS",
            "state": "CA",
            "postal_code": "902111840",
            "telephone_number": "310-274-2722",
            "fax_number": "310-275-1082"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9001 WILSHIRE BLVD STE 201",
            "city": "BEVERLY HILLS",
            "state": "CA",
            "postal_code": "902111840",
            "telephone_number": "310-274-2722",
            "fax_number": "310-275-1082"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "STEFAN A UNTERHALTER MD A MEDICAL CORP",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-02-26",
        "last_updated": "2026-02-17",
        "certification_date": "2026-02-17",
        "status": "A",
        "authorized_official_last_name": "UNTERHALTER",
        "authorized_official_first_name": "STEFAN",
        "authorized_official_middle_name": "ANDREW",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "310-274-2722",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Nephrology",
            "state": "CA",
            "license": "A33152",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE RAILROAD",
            "identifier": "110011556",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A331520",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Stanley J. Zusman D.P.M.
• Ryan Andrew Stanton, MD
• Stat Clinical Pharmancy
• Tatyana Steele-Hall, LAC
• Fiona Elaine Steele, MFT MA
• Lilia Stefanowa, PMHNP-BC
• Kira Danielle Stein, MD
• Margaret Rose Stein, MD
• Pilar Yvette Stein, LCSW
• Theodore N Stein, M.D.

• Nephrology Physician in Beverly Hills, CA
• Providers in Beverly Hills, CA by specialty
• Nephrology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.