James Chessing, PHD
Clinical Psychologist · San Mateo, CA
James Chessing, PHD is a clinical psychologist with a practice address in San Mateo, California, and NPI 1326142407, issued on Sep 11, 2006. Check the license (California PSY14087, 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
- James Chessing
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY14087 CA
Self-reported in NPPES; status is on the state search - Practice location
- 334 N San Mateo Dr, San Mateo, CA 94401
- Phone
- (650) 342-4557
- Enumerated
- Sep 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 9827927 CA
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 334 N San Mateo Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christine Kenworthy, PH.D.Clinical Psychologist1427479823
Verify James Chessing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY14087Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
James Chessing among 12,647 clinical psychologist records in California
James Chessing, 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 not. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 80% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 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).
65 clinical psychologist records list a practice address in San Mateo
They are 65 of the 3,909 NPPES records with a practice address in San Mateo, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 12,647 in California → Every provider in San Mateo → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Sandra Beyerle, PHDSan Mateo, CA 944011649374687
- Jessamy Cadigan, PSYDSan Mateo, CA 944011720242548
- Stan FriedmanSan Mateo, CA 944011851597058
- Siew Kuek, PSY.DSan Mateo, CA 944011750533675
- Gerry Lenhart, PH.D.San Mateo, CA 944011184814865
- Diane Leroi, PH.D.San Mateo, CA 944011720109531
- Anna Nedelisky Zeman, PH.D.San Mateo, CA 944011265628820
- David Parecki, PSY.DSan Mateo, CA 944011477618171
Common questions
What is James Chessing, PHD's NPI number?
James Chessing, PHD's National Provider Identifier (NPI) is 1326142407, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Chessing, PHD located?
The NPPES record lists a practice address at 334 N San Mateo Dr, San Mateo, CA, 94401. Phone: (650) 342-4557. Providers update this record themselves, so call before visiting.
How can I verify James Chessing, PHD's license?
NPPES lists California license number PSY14087, 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.