Donald Thomas Hay, M.D.

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

A18121 Issued in CA

Practice address

2222 East St
Ste 250
Concord, CA 94520-2084

Phone

(925) 689-6211

Fax

(925) 689-3857

NPI assigned

Jul 12, 2005

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 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

Practice roles

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.

• John Muir Trauma Physicians Billing Service

  • Trauma Surgery Physician
  • Walnut Creek, CA
  • NPI 1962551861

  Urology

  NPD (past)

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

{
    "created_epoch": "1121126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1740288836",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2222 EAST ST",
            "address_2": "STE 250",
            "city": "CONCORD",
            "state": "CA",
            "postal_code": "945202084",
            "telephone_number": "925-689-6211",
            "fax_number": "925-689-3857"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2222 EAST ST",
            "address_2": "STE 250",
            "city": "CONCORD",
            "state": "CA",
            "postal_code": "945202084",
            "telephone_number": "925-689-6211",
            "fax_number": "925-689-3857"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAY",
        "first_name": "DONALD",
        "middle_name": "THOMAS",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "CA",
            "license": "A18121",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "GR0067920",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Niema Antoinette Hawkins
• Toniea Lynnae Hawkins
• Emma Hawksworth
• Zoe Irene Hawley
• Lee Anne Haworth, PH.D.
• Angela Haydel, BCBA
• Kaleka Haydon-Quinones
• Ahmari Hayes
• Amma N Hayes, PHD
• Ella M Hayes

• Urology Physician in Concord, CA
• Providers in Concord, CA by specialty
• Urology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; OIG LEIE.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.