Holly Iris Williamson, LISAC

Primary specialty

Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X

License

11735 Issued in AZ

Practice address

3864 N 27TH Ave
Phoenix, AZ 85017-4703

Phone

(602) 685-6000

Fax

(602) 212-6250

NPI assigned

Aug 21, 2024

Last updated

Jul 15, 2026By the provider in NPPES

Sex

Female

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)

Not enrolled

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• National Council on Alcoholism Greater Phoenix Area

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Phoenix, AZ
  • NPI 1437195906
  NPD (past)

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

{
    "created_epoch": "1724198400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784073600000",
    "number": "1033942438",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3864 N 27TH AVE",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850174703",
            "telephone_number": "602-685-6000",
            "fax_number": "602-212-6250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3864 N 27TH AVE",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850174703",
            "telephone_number": "602-685-6000",
            "fax_number": "602-212-6250"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4201 N 16th St Ste 140",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850165398",
            "country_code": "US",
            "telephone_number": "602-264-6214 x219",
            "fax_number": "602-265-2102",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "HOLLY",
        "middle_name": "IRIS",
        "name_prefix": "Dr.",
        "credential": "LISAC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-08-21",
        "last_updated": "2026-07-15",
        "certification_date": "2026-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "AZ",
            "license": "11735",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Williamsconsultant Com LLC
• Amber L Williamson-Lopez, MD
• Amy Jo Williamson, MD
• David Williamson, NNP
• Elma Williamson, FNP
• Jeanette Williamson
• Jennifer Lynn Williamson, LPC
• Kaliyah Daichanel Williamson
• Kristin Ann Williamson, PA
• Kyla Williamson

• Addiction (Substance Use Disorder) Counselor in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Addiction (Substance Use Disorder) Counselor in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 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.