Thomas Elliston Guyer
Clinical Psychologist · San Leandro, CA
Thomas Elliston Guyer is a clinical psychologist with a practice address in San Leandro, California, and NPI 1316311053, issued on Nov 18, 2015. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas Elliston Guyer
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY10001721 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2275 Arlington Dr, San Leandro, CA 94578
- Phone
- (510) 317-1445
- Enumerated
- Nov 18, 2015
- Record last updated
- Apr 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20260512002709); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
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Verify Thomas Elliston Guyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Thomas Elliston Guyer among 12,647 clinical psychologist records in California
Thomas Elliston Guyer 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 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 23% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2024 · median 2006 among the 2,424 with a school on file
- Record last updated2026 · 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).
Clinical Psychologist providers in California
There are 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 Leandro → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Diane Goldstein, PH.D.San Leandro, CA 945781619062122
- Dorothy Griffin, PH.D.San Leandro, CA 945781386854099
- Myron Gulseth, PHDSan Leandro, CA 945781932304052
- James Kurkjian, PH.D.San Leandro, CA 945781083764179
- Jennifer Lauter, PSYDSan Leandro, CA 945781679779755
- Lily Ly, PSY.D.San Leandro, CA 945781679798557
- Lindsay Malcolm, PSYDSan Leandro, CA 945781902091127
- Mary Marth, PSY.D.San Leandro, CA 945781831380146
Common questions
What is Thomas Elliston Guyer's NPI number?
Thomas Elliston Guyer's National Provider Identifier (NPI) is 1316311053, issued on Nov 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Elliston Guyer located?
The NPPES record lists a practice address at 2275 Arlington Dr, San Leandro, CA, 94578. Phone: (510) 317-1445. Providers update this record themselves, so call before visiting.
How can I verify Thomas Elliston Guyer's license?
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.