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

Ashley Elizabeth Mason, PHD

Individual provider Clinical Psychologist · NPI 1578011375

Ashley Elizabeth Mason, PHD is a Clinical Psychologist in San Francisco, California. Qualified in 2013, 13 years ago. Practices with UCSF Medical Group Business Services, a 1,531-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2016
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

401 Parnassus Ave UCSF Langley Porter Psychiatric Institute
San Francisco, CA 94143-2211 Not confirmed with CMS for 10 years — call before visiting
Phone: (415) 514-6820
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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 26991 (CA)

Record details

NPI number1578011375
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedSeptember 21, 2016
Last updated in NPPESSeptember 21, 2016

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Ucsf Medical Group Business Services — 1531 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients15
Services billed 77 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at UCSF Medical Group Business Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1531 clinicians in the practice; 12 are shown here.

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