Douglas Wayne Larson, PH.D.
Clinical Psychologist · Colton, CA
Douglas Wayne Larson, PH.D. is a clinical psychologist with a practice address in Colton, California, and NPI 1801011580, issued on Apr 16, 2007. Check the license (California PSY9281, 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
- Douglas Wayne Larson
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY9281 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1430 E Cooley Dr, Colton, CA 92324
- Phone
- (909) 798-8999
- Enumerated
- Apr 16, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 1430 E Cooley Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Douglas Wayne Larson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY9281Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Douglas Wayne Larson among 12,647 clinical psychologist records in California
Douglas Wayne Larson, PH.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 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 Colton → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- David Anderson, PH.D.Colton, CA 923241376520130
- Christopher Love, PSY.D.Crestline, CA 923251477879872
- Robin Bradley, P.H.DBig Bear Lake, CA 923151902989759
- Victoria Holmes, PSYDFontana, CA 923341306139944
- Heidi Joffrion, PSY.D., M.F.T.Fontana, CA 923351508060757
- Stephen Piggue, EDDFontana, CA 923351417546011
- Baba Singh, PSY.D.Fontana, CA 923351720377559
- Sonya Young, PSYDGrand Terrace, CA 923131295319127
Common questions
What is Douglas Wayne Larson, PH.D.'s NPI number?
Douglas Wayne Larson, PH.D.'s National Provider Identifier (NPI) is 1801011580, issued on Apr 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Wayne Larson, PH.D. located?
The NPPES record lists a practice address at 1430 E Cooley Dr, Colton, CA, 92324. Phone: (909) 798-8999. Providers update this record themselves, so call before visiting.
How can I verify Douglas Wayne Larson, PH.D.'s license?
NPPES lists California license number PSY9281, 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.