Arthur Darrell Hagan, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

15022 Issued in OK

Practice address

1323 W 6TH Ave Ste 201
Stillwater, OK 74074-4306

Phone

(405) 743-2354

Fax

(405) 743-2950

NPI assigned

Jul 5, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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.

• Blackwell Hospital Trust Authority

  • Internal Medicine Physician
  • Blackwell, OK
  • NPI 1821525304

  Cardiovascular Disease

  NPD (past)
• Stillwater Medical Center Physicians

  • Anesthesiology Physician
  • Stillwater, OK
  • NPI 1295859387

  Cardiovascular Disease

  NPD (past)

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

{
    "created_epoch": "1152057600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785628800000",
    "number": "1811928021",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 720006",
            "city": "NORMAN",
            "state": "OK",
            "postal_code": "730704006",
            "telephone_number": "405-743-2354",
            "fax_number": "405-743-2950"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1323 W 6TH AVE STE 201",
            "city": "STILLWATER",
            "state": "OK",
            "postal_code": "740744306",
            "telephone_number": "405-743-2354",
            "fax_number": "405-743-2950"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAGAN",
        "first_name": "ARTHUR",
        "middle_name": "DARRELL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-05",
        "last_updated": "2026-08-02",
        "certification_date": "2020-03-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "OK",
            "license": "15022",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "OK",
            "license": "15022",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100174340B",
            "state": "OK"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Brian R Gumm, O.D.
• Myra Kristine Gustafson
• Erin Renee Gutierrez, RDN
• Hac, Inc.
• Michael Wayne Hafner, P.A.
• Victoria Hague
• Alexandra Hahn
• Rachel Mae Hall
• Rahmah Firdaus Hall, PA-C
• Robin B. Hall, M.D.

• Cardiovascular Disease Physician in Stillwater, OK
• Providers in Stillwater, OK by specialty
• Cardiovascular Disease Physician in Oklahoma

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.