John Poston, PHD
Psychologist · La Mirada, CA
John Poston, PHD is a psychologist with a practice address in La Mirada, California, and NPI 1679960918, issued on Apr 24, 2015. Check the license (California PSY26673, 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
- John Poston
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY26673 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12625 LA Mirada Blvd, La Mirada, CA 90638
- Phone
- (562) 903-4800
- Enumerated
- Apr 24, 2015
- Record last updated
- Apr 24, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Also registered at 12625 LA Mirada Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jacqueline Gattis, PHDClinical Psychologist1134462815
- Miriam Hall, PH.D.Clinical Psychologist1184846164
- Todd Hall, PHDClinical Psychologist1205179884
Verify John Poston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY26673Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Poston among 7,304 psychologist records in California
John Poston, PHD is one of 7,304 psychologist records with a practice address in California. 6% 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 64% of them.
- NPI issued2015 · 64% of these records are older, 33% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2015 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in California
There are 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,304 in California → Every provider in La Mirada → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Levon Margolin, PH.D.La Mirada, CA 906381801136866
- Camilla Seippel, PSY.D.La Mirada, CA 906381255640454
- Berry Bishop, PSYDLa Mirada, CA 906391114860939
- Laura Pedigo, PSYDLa Mirada, CA 906391164669396
- Gayle Callaghan, ATR-BC, LMFT, PSY.D.Montebello, CA 906401649302944
- Ernest Rivera, PH.D.Montebello, CA 906401003908823
- Yvette Barraza-Reyes, PHDLa Habra, CA 906311922027465
- Thomas Shaw, PH.D.La Habra, CA 906311538123443
Common questions
What is John Poston, PHD's NPI number?
John Poston, PHD's National Provider Identifier (NPI) is 1679960918, issued on Apr 24, 2015. An NPI identifies a provider in billing; it is not a license.
Where is John Poston, PHD located?
The NPPES record lists a practice address at 12625 LA Mirada Blvd, La Mirada, CA, 90638. Phone: (562) 903-4800. Providers update this record themselves, so call before visiting.
How can I verify John Poston, PHD's license?
NPPES lists California license number PSY26673, 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.