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

William L Retts, PHD

Individual provider Clinical Psychologist · NPI 1790730117

William L Retts, PHD is a Clinical Psychologist in Phoenix, Arizona. Qualified in 1973, 53 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Arizona.

Years since qualifying
53
Licensed in
AZ
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

11024 N 28th Dr #290
Phoenix, AZ 85029-4373
Phone: (602) 870-7710
Fax: (602) 734-0692
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 354 (AZ)

Record details

NPI number1790730117
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 24, 2006
Last updated in NPPESNovember 7, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1973 (53 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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