Olga Gabriela Castillo, PSY.D.
Clinical Psychologist · Claremont, CA
Olga Gabriela Castillo, PSY.D. is a clinical psychologist with a practice address in Claremont, California, and NPI 1801939731, issued on Feb 14, 2007. Check the license (California PSY21924, 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
- Olga Gabriela Castillo
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY21924 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 W 1St St Ste 312, Claremont, CA 91711
- Phone
- (562) 904-3999
- Enumerated
- Feb 14, 2007
- Record last updated
- Apr 29, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 1801939731 CA
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 250 W 1St St Ste 312
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Olga Gabriela Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY21924Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Olga Gabriela Castillo among 12,647 clinical psychologist records in California
Olga Gabriela Castillo, PSY.D. 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 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 57% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2020 · 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).
45 clinical psychologist records list a practice address in Claremont
They are 45 of the 800 NPPES records with a practice address in Claremont, and 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 Claremont → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Richard Ault, PH.D.Claremont, CA 917111093870792
- Dale Beaman, PHDClaremont, CA 917111659355881
- Roselyn Colombo, PH.D.Claremont, CA 917111457461352
- Helen Conard, PH.D.Claremont, CA 917111356373971
- Christopher Ebbe, PH.D.Claremont, CA 917111548313240
- Karen Greenbaum-Maya, PH. D.Claremont, CA 917111174696629
- Ann Morgan, PSY.D.Claremont, CA 917111619068269
- Susan Ring, PH.D.Claremont, CA 917111285791525
Common questions
What is Olga Gabriela Castillo, PSY.D.'s NPI number?
Olga Gabriela Castillo, PSY.D.'s National Provider Identifier (NPI) is 1801939731, issued on Feb 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Olga Gabriela Castillo, PSY.D. located?
The NPPES record lists a practice address at 250 W 1St St Ste 312, Claremont, CA, 91711. Phone: (562) 904-3999. Providers update this record themselves, so call before visiting.
How can I verify Olga Gabriela Castillo, PSY.D.'s license?
NPPES lists California license number PSY21924, 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.