Arthur Ritmeester, PH.D.
Psychologist · Pomona, CA
Arthur Ritmeester, PH.D. is a psychologist with a practice address in Pomona, California, and NPI 1598553216, issued on Apr 30, 2025. Check the license (California PSY29413, 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
- Arthur Ritmeester
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY29413 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3801 W Temple Ave Bldg 66-116, Pomona, CA 91768
- Phone
- (909) 869-3220
- Enumerated
- Apr 30, 2025
- Record last updated
- Apr 30, 2025
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Verify Arthur Ritmeester in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY29413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Arthur Ritmeester among 7,304 psychologist records in California
Arthur Ritmeester, PH.D. 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 2025, is newer than 95% of them.
- NPI issued2025 · 95% of these records are older, 2% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2025 · 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 Pomona → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Shantell Harris, PSYDPomona, CA 917681043803232
- Kaseja Kang, PH DPomona, CA 917681013937333
- Elise Sanchez, PSY.D.Pomona, CA 917681841782612
- Chikako Yamaguchi, PSYDPomona, CA 917681609464593
- Marisa Flores, PSY.D.Pomona, CA 917671902668965
- Nicole Lobato, PH.D.Pomona, CA 917671548456817
- Yash Manchanda, PHDPomona, CA 917691922028240
- Patricia Wallace-Burke, PH.D.Pomona, CA 917671427199157
Common questions
What is Arthur Ritmeester, PH.D.'s NPI number?
Arthur Ritmeester, PH.D.'s National Provider Identifier (NPI) is 1598553216, issued on Apr 30, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Arthur Ritmeester, PH.D. located?
The NPPES record lists a practice address at 3801 W Temple Ave Bldg 66-116, Pomona, CA, 91768. Phone: (909) 869-3220. Providers update this record themselves, so call before visiting.
How can I verify Arthur Ritmeester, PH.D.'s license?
NPPES lists California license number PSY29413, 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.