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

Warren Keith Williamson, PA

Individual provider Physician Assistant · NPI 1912951823

Warren Keith Williamson, PA is a Physician Assistant in Phoenix, Arizona. Licensed in Arizona. Registered with an NPI since 2006.

Licensed in
AZ
In the registry since
2006
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

220 S 12th Avenue Maricopa County Health Care For The Homeless
Phoenix, AZ 85007-3101
Phone: (602) 372-2117
Fax: (602) 372-2120
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 2892 (AZ)

Record details

NPI number1912951823
Entity typeIndividual (Type 1)
GenderMale
Credentials PA
Sole proprietorNo
NPI enumeratedMay 22, 2006
Last updated in NPPESJanuary 12, 2012
Mailing address220 South 12th Avenue, Maricopa County Health Care For The Homeless, Phoenix, AZ 85007-3101

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