NPPES file of Aug 9, 2026

Alan Robert McThomas, PSYCHOLOGIST

Clinical Psychologist · Riverside, CA

Alan Robert McThomas, PSYCHOLOGIST is a clinical psychologist with a practice address in Riverside, California, and NPI 1255355699, issued on Jul 27, 2006. Check the license (California PSY5365, 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
1255355699
Name
Alan Robert McThomas
Credential
PSYCHOLOGIST
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PSY5365 CA
Self-reported in NPPES; status is on the state search
Practice location
5790 Magnolia Ave, Riverside, CA 92506
Phone
(951) 682-7240
Enumerated
Jul 27, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(951) 682-0519
Medicare enrollment
Enrolled (PECOS I20101105000870); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →

Also registered at 5790 Magnolia Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Victoria Andrews, LMFTMarriage & Family Therapist1013481183
  2. Gary Collins, PH.D.Clinical Psychologist1184716466
  3. Russell EllowayGeneral Practice Dentistry1518895929
  4. Stefanie Sherbon, M.S. LMFTMarriage & Family Therapist1104090257
  5. Ted Springer, PH.D.Marriage & Family Therapist1376739599
  6. Michael Walker, PSY.DClinical Psychologist1497883060

Verify Alan Robert McThomas 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 PSY5365    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
Find the California license search

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Alan Robert McThomas among 12,647 clinical psychologist records in California

Alan Robert McThomas, PSYCHOLOGIST 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 fileYes · 19% of these records are
  • Graduated1976 · median 2006 among the 2,424 with a school on file
  • 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).

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 Riverside → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Christine Catipon, PSYDRiverside, CA 925061477744910
  2. Gary Collins, PH.D.Riverside, CA 925061184716466
  3. Robert Connerley, PH.D.Riverside, CA 925061184762981
  4. Christopher Cooper, PHDRiverside, CA 925061417008673
  5. Laura Cueva-Miller, PH.D.Riverside, CA 925061629094057
  6. Ekerette Essien, PH.D.Riverside, CA 925061396706438
  7. Karla Gates, PHDRiverside, CA 925061992867881
  8. Joshua Knabb, PSY.D.Riverside, CA 925061689828824

Common questions

What is Alan Robert McThomas, PSYCHOLOGIST's NPI number?

Alan Robert McThomas, PSYCHOLOGIST's National Provider Identifier (NPI) is 1255355699, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alan Robert McThomas, PSYCHOLOGIST located?

The NPPES record lists a practice address at 5790 Magnolia Ave, Riverside, CA, 92506. Phone: (951) 682-7240. Providers update this record themselves, so call before visiting.

How can I verify Alan Robert McThomas, PSYCHOLOGIST's license?

NPPES lists California license number PSY5365, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.