Mark Ryan Mayo, PSYD, CA LP 33599
Psychologist · San Francisco, CA
Mark Ryan Mayo, PSYD, CA LP 33599 is a psychologist with a practice address in San Francisco, California, and NPI 1689109696, issued on Apr 27, 2017. Check the license (California 33599, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Ryan Mayo
- Credential
- PSYD, CA LP 33599
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 33599 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8 Bernice St Unit 107, San Francisco, CA 94103
- Phone
- (415) 489-0211
- Enumerated
- Apr 27, 2017
- Record last updated
- Jan 22, 2023
- Entity
- Type 1 · individual
Verify Mark Ryan Mayo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 33599Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
516 psychologist records list a practice address in San Francisco
They are 516 of the 38,143 NPPES records with a practice address in San Francisco, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 516 in San Francisco → All 7,304 in California → Every provider in San Francisco →
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- Sheri Abercrombie, PSY.D.San Diego, CA1932292422
- Tseday Aberra, PSY.D.Corona, CA1104026517
- Elham Abouhamzeh, PSY.DIrvine, CA1386092880
- Lilit Abraamyan-ChaidezBurbank, CA1710433289
- Mackenzie Abraham, PHDRedondo Beach, CA1881053833
- Sandra Abraham, PSYDSanta Fe Springs, CA1427467851
Common questions
What is Mark Ryan Mayo, PSYD, CA LP 33599's NPI number?
Mark Ryan Mayo, PSYD, CA LP 33599's National Provider Identifier (NPI) is 1689109696, issued on Apr 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mark Ryan Mayo, PSYD, CA LP 33599 located?
The NPPES record lists a practice address at 8 Bernice St Unit 107, San Francisco, CA, 94103. Phone: (415) 489-0211. Providers update this record themselves, so call before visiting.
How can I verify Mark Ryan Mayo, PSYD, CA LP 33599's license?
NPPES lists California license number 33599, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.