NPPES file of Aug 9, 2026

Jonathan David Mahrer, PH.D.

Psychologist · Mill Valley, CA

Jonathan David Mahrer, PH.D. is a psychologist with a practice address in Mill Valley, California, and NPI 1053341677, issued on Jul 3, 2006. Check the license (California PSY 14351, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1053341677
Name
Jonathan David Mahrer
Credential
PH.D.
Primary taxonomy
Psychologist 103T00000X
License number
PSY 14351 CA
Self-reported in NPPES; status is on the state search
Practice location
61 Camino Alto Ste 106, Mill Valley, CA 94941
Phone
(415) 567-7751
Enumerated
Jul 3, 2006
Record last updated
Apr 18, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(866) 295-5532
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Jonathan David Mahrer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY 14351
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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23 psychologist records list a practice address in Mill Valley

They are 23 of the 653 NPPES records with a practice address in Mill Valley, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other psychologist records in California

  1. Alice Abarbanel, PH.D.Albany, CA1598095002
  2. Michael Abbott, PSYDModesto, CA1346498151
  3. Riley AbelesLos Angeles, CA1841861945
  4. Jenna Abell, PSYDLos Angeles, CA1073743969
  5. Sheri Abercrombie, PSY.D.San Diego, CA1932292422
  6. Tseday Aberra, PSY.D.Corona, CA1104026517
  7. Elham Abouhamzeh, PSY.DIrvine, CA1386092880
  8. Lilit Abraamyan-ChaidezBurbank, CA1710433289
  9. Mackenzie Abraham, PHDRedondo Beach, CA1881053833
  10. Sandra Abraham, PSYDSanta Fe Springs, CA1427467851

Common questions

What is Jonathan David Mahrer, PH.D.'s NPI number?

Jonathan David Mahrer, PH.D.'s National Provider Identifier (NPI) is 1053341677, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan David Mahrer, PH.D. located?

The NPPES record lists a practice address at 61 Camino Alto Ste 106, Mill Valley, CA, 94941. Phone: (415) 567-7751. Providers update this record themselves, so call before visiting.

How can I verify Jonathan David Mahrer, PH.D.'s license?

NPPES lists California license number PSY 14351, 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.