Registry data as of Aug 27, 2026

James Miersma

Psychologist · Bellflower, CA

James Miersma is a psychologist with a practice address in Bellflower, California, and NPI 1609111921, issued on Nov 28, 2012. Check the license (California PSY20669, 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, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1609111921
Name
James Miersma
Primary taxonomy
Psychologist 103T00000X
License number
PSY20669 CA
Self-reported in NPPES; status is on the state search
Practice location
10251 Hacienda St, Bellflower, CA 90706
Phone
(562) 495-0610
Enumerated
Nov 28, 2012
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 James Miersma 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 PSY20669    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

Psychologist providers in California

There are 7,178 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,178 in California → Every provider in Bellflower →

Other psychologist records in California

  1. Toni AbadFountain Valley, CA1518633106
  2. Alice Abarbanel, PH.D.Albany, CA1598095002
  3. Michael Abbott, PSYDModesto, CA1346498151
  4. Jenna Abell, PSYDLos Angeles, CA1073743969
  5. Tseday Aberra, PSY.D.Corona, CA1104026517
  6. Elham Abouhamzeh, PSY.DIrvine, CA1386092880
  7. Carine AbouseifSalinas, CA1760832224
  8. Mackenzie Abraham, PHDRedondo Beach, CA1881053833
  9. Twylla Abrahamson, PH.D.Auburn, CA1700815875
  10. Samantha Abram, BASan Francisco, CA1326540436

Common questions

What is James Miersma's NPI number?

James Miersma's National Provider Identifier (NPI) is 1609111921, issued on Nov 28, 2012. An NPI identifies a provider in billing; it is not a license.

Where is James Miersma located?

The NPPES record lists a practice address at 10251 Hacienda St, Bellflower, CA, 90706. Phone: (562) 495-0610. Providers update this record themselves, so call before visiting.

How can I verify James Miersma's license?

NPPES lists California license number PSY20669, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.