Ashley Elizabeth Mason, PHD
Clinical Psychologist · San Francisco, CA
Ashley Elizabeth Mason, PHD is a clinical psychologist with a practice address in San Francisco, California, and NPI 1578011375, issued on Sep 21, 2016. Check the license (California 26991, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ashley Elizabeth Mason
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 26991 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 514-6820
- Enumerated
- Sep 21, 2016
- Record last updated
- Sep 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161020000944); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 401 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ashley Elizabeth Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 26991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Ucsf Medical Group Business ServicesSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashley Elizabeth Mason among 12,647 clinical psychologist records in California
Ashley Elizabeth Mason, PHD is one of 12,647 clinical psychologist records with a practice address in California. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2013 · median 2006 among the 2,424 with a school on file
- Record last updated2016 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
802 clinical psychologist records list a practice address in San Francisco
They are 802 of the 38,143 NPPES records with a practice address in San Francisco, and 12,647 clinical psychologist records in California.
All 12,647 in California → Every provider in San Francisco → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Patricia Arean, PH.D.San Francisco, CA 941431841338951
- Regina Armas, LCSW, PH.D.San Francisco, CA 941431730118217
- Linda Centore, PHD, RNSan Francisco, CA 941431831242171
- Sharon Hall, PH.D.San Francisco, CA 941431356350698
- Laura Julian, PH.D.San Francisco, CA 941431174617690
- Paul Lebby, PH.D.San Francisco, CA 941431649207879
- Beverly Lehr, PHDSan Francisco, CA 941431114975455
- Rachel Loewy, PH.D.San Francisco, CA 941431396925822
Common questions
What is Ashley Elizabeth Mason, PHD's NPI number?
Ashley Elizabeth Mason, PHD's National Provider Identifier (NPI) is 1578011375, issued on Sep 21, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ashley Elizabeth Mason, PHD located?
The NPPES record lists a practice address at 401 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 514-6820. Providers update this record themselves, so call before visiting.
How can I verify Ashley Elizabeth Mason, PHD's license?
NPPES lists California license number 26991, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Ashley Elizabeth Mason, PHD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.