Douglas J. Hay, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

G47396 Issued in CA

Practice address

1300 E Cooley Dr
Colton, CA 92324-3905

Phone

(909) 370-4100

Fax

(909) 796-4158

NPI assigned

May 25, 2006

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

Enrolled in CA

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

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dhay12096@epiclp.direct-ci.com

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.

• Beaver Medical Group P C

  • Family Medicine Physician
  • Redlands, CA
  • NPI 1649503319

  Internal Medicine

  Medicare reassignment NPD
• Beaver Medical Group P C

  • Physical Therapist
  • Redlands, CA
  • NPI 1427090281
  NPD

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

{
    "created_epoch": "1148515200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1386690980",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 2200",
            "city": "REDLANDS",
            "state": "CA",
            "postal_code": "923730722",
            "telephone_number": "909-793-3311",
            "fax_number": "909-796-4158"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1300 E COOLEY DR",
            "city": "COLTON",
            "state": "CA",
            "postal_code": "923243905",
            "telephone_number": "909-370-4100",
            "fax_number": "909-796-4158"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAY",
        "first_name": "DOUGLAS",
        "middle_name": "J.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G47396",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G473960",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sunita Sameer Hassamal, M.D.
• Kasim Osman Hassen, MD
• Emma Lee Hatanaka
• Douglas Michael Hausman
• Richard P. Hausman, D.O.
• Matthew Hayden
• Calvin Andrew He, DO
• Healthbridge Community
• Healthpointe Medical Group, Inc.
• Brian Kent Heaton

• Internal Medicine Physician in Colton, CA
• Providers in Colton, 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 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; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.