Clifford David Friesen, M. D.

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

License

K6585 Issued in TX

Practice address

36000 Darnall Loop
Allergy Clinic, Carl R. Darnall Army Medical Center
Fort Hood, TX 76544-5095

Phone

(254) 285-6335

NPI assigned

May 10, 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

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.

• Valiant Cardiopulmonary Independent Diagnostic Testing Facility

  • Clinic/Center
  • Killeen, TX
  • NPI 1720221765
  NPD (past)

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

{
    "created_epoch": "1147219200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1538119896",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1427 RIVER RIDGE RANCH RD",
            "city": "KILLEEN",
            "state": "TX",
            "postal_code": "765493241",
            "telephone_number": "254-285-6338"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "36000 DARNALL LOOP",
            "address_2": "ALLERGY CLINIC, CARL R. DARNALL ARMY MEDICAL CENTER",
            "city": "FORT HOOD",
            "state": "TX",
            "postal_code": "765445095",
            "telephone_number": "254-285-6335"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FRIESEN",
        "first_name": "CLIFFORD",
        "middle_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "M. D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-10",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207K00000X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology",
            "state": "TX",
            "license": "K6585",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Adam Colby Frazier, DNP, CRNA
• Chantra Cheyenne Frazier, CNM
• Mathew Frazier, PT, DPT
• Kathleen A Frederick, LCSW
• Reginald Augustus Frederick, CST,CSA
• Peter Frohman, PH.D.
• Ramon E. Fry II, PA
• Sara Fry, MD
• Ibifiri Stella Fubara
• Debra Fudge, LCSW

• Allergy & Immunology Physician in Fort Hood, TX
• Providers in Fort Hood, TX by specialty
• Allergy & Immunology Physician in Texas

• 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.