Zachary Holowell

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

11181 Issued in AZ

Practice address

1919 E Thomas Rd
Phoenix, AZ 85016-7710

Phone

(602) 933-1000

NPI assigned

Jan 8, 2025

Sex

Male

Sole proprietor

Yes

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

Enrolled in AZ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Eastern Virginia Medical School, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

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.

• Phoenix Children'S Hospital

  • Pediatrics Physician
  • Phoenix, AZ
  • NPI 1922112044
  Medicare reassignment NPD
• Phoenix Children'S Medical Group

  • Multi-Specialty Clinic/Center
  • Mesa, AZ
  • NPI 1487814240
  NPD

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

{
    "created_epoch": "1736294400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755043200000",
    "number": "1689484206",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2108 E THOMAS RD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850167761",
            "telephone_number": "602-933-3124"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1919 E THOMAS RD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850167710",
            "telephone_number": "602-933-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "825 Fairfax Ave",
            "address_purpose": "LOCATION",
            "city": "Norfolk",
            "state": "VA",
            "postal_code": "235071912",
            "country_code": "US",
            "telephone_number": "757-446-5600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOLOWELL",
        "first_name": "ZACHARY",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-01-08",
        "last_updated": "2025-08-13",
        "certification_date": "2025-08-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "AZ",
            "license": "11181",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ann Marie Holmquist, COTA
• Whitney Holmquist
• Alexandra Holomuzki-Zgonc
• Holon Health Great Lakes, P.C.
• Holon Health Great Lakes, P.C.
• Julianne Jordan Holroyd, PHD
• Brittani Holt
• Brooklynnn June Holt
• Christopher Edward Holt, CCC-SLP
• Crystal Roma Holt, D.P.T

• Physician Assistant in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Physician Assistant in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 2025; 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.
• 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.