Individual provider Active NPI

Joseph Holtzclaw, RDN

  • Registered Dietitian
  • Norman, OK
National Provider Identifier
1275112278
Registry record updated Mar 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered DietitianTaxonomy code 133V00000X
License
2545 Issued in OK
Practice address
15951 Little Axe Dr
Norman, OK 73026-9088
Phone
(405) 447-0300
Fax
(405) 701-7631
NPI assigned
Apr 6, 2021
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Registered Dietitian 133V00000X 2545 OK Primary

Addresses

Primary practice location

15951 Little Axe Dr
Norman, OK 73026-9088

Mailing address

15951 Little Axe Dr
Norman, OK 73026-9088
Phone (405) 447-0300

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OK

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210622002197 OK Practitioner - Registered Dietitian Or Nutrition Professional 1052712593 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Registered Dietitian Or Nutrition Professional
Education
Other, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

15951 Little Axe Dr
Norman, OK 73026-9088
Phone (405) 447-0300

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
2545OKMDOptometrist

Practice roles

OrganizationSpecialtyStatusNew patients
Absentee Shawnee Tribal Health Authority, Inc. CurrentSince Apr 20, 2021 Accepting new patients

Locations

15951 Little Axe Dr
Norman, OK 73026
Phone (405) 447-0300

2029 Gordon Cooper Dr
Shawnee, OK 74801
Phone (405) 878-4702

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1617667200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1275112278",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15951 LITTLE AXE DR",
            "city": "NORMAN",
            "state": "OK",
            "postal_code": "730269088",
            "telephone_number": "405-447-0300",
            "fax_number": "405-701-7631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15951 LITTLE AXE DR",
            "city": "NORMAN",
            "state": "OK",
            "postal_code": "730269088",
            "telephone_number": "405-447-0300",
            "fax_number": "405-701-7631"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLTZCLAW",
        "first_name": "JOSEPH",
        "name_prefix": "Mr.",
        "credential": "RDN",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-04-06",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "OK",
            "license": "2545",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Norman, OK

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.