Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Holly Iris Williamson, LISAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1033942438

Dr. Holly Iris Williamson, LISAC is an Addiction (Substance Use Disorder) Counselor in Phoenix, Arizona. Works from 2 locations. Licensed in Arizona.

Licensed in
AZ
In the registry since
2024

Practice location Address checks out

3864 N 27th Ave
Phoenix, AZ 85017-4703
Phone: (602) 685-6000
Fax: (602) 212-6250
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4201 N 16th St Ste 140, Phoenix, AZ 85016-5398 — (602) 264-6214

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 11735 (AZ)

Record details

NPI number1033942438
Entity typeIndividual (Type 1)
GenderFemale
Credentials LISAC
Sole proprietorNo
NPI enumeratedAugust 21, 2024
Last updated in NPPESJuly 15, 2026
Certification dateJuly 15, 2026

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