John Christian Umhau, MD

Primary specialty

Addiction Medicine (Family Medicine) PhysicianTaxonomy code 207QA0401X

License

D28090 Issued in MD

Practice address

200 West Hospital Dr
Whiteriver, AZ 85941

Phone

(928) 338-3555

Fax

(928) 338-5508

NPI assigned

Dec 7, 2009

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Opted out of Medicare

Yes, effective Dec 20, 2025 through Dec 20, 2027

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": "1260144000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1391731200000",
    "number": "1316276140",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 WEST HOSPITAL DRIVE",
            "city": "WHITERIVER",
            "state": "AZ",
            "postal_code": "859410860",
            "telephone_number": "928-338-3555",
            "fax_number": "928-338-5508"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 WEST HOSPITAL DR",
            "city": "WHITERIVER",
            "state": "AZ",
            "postal_code": "85941",
            "telephone_number": "928-338-3555",
            "fax_number": "928-338-5508"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UMHAU",
        "first_name": "JOHN",
        "middle_name": "CHRISTIAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-12-07",
        "last_updated": "2014-02-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207QA0401X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Addiction Medicine",
            "state": "MD",
            "license": "D28090",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "WHITERIVER",
            "identifier": "HSZ962RBU",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "846790",
            "state": "AZ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "020561",
            "state": "AZ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Kim Taylor, RN
• Trevor Neil Thompson, RPH
• Weston Thompson, D.PH.
• Bryce H. Tran, PHARMD
• April L Twarkins, FNP-C
• Valerie Sumann Vaughan, PHARMD
• Susan Vest, MD
• Thomas A. Vetto, M.D.
• Jordan Vidal
• Ardith Jessie Walker, RN

• Addiction Medicine (Family Medicine) Physician in Whiteriver, AZ
• Providers in Whiteriver, AZ by specialty
• Addiction Medicine (Family Medicine) Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 7, 2014; 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.