Stephen Carl Winston, PH.D.
Clinical Psychologist · Agoura Hills, CA
Stephen Carl Winston, PH.D. is a clinical psychologist with a practice address in Agoura Hills, California, and NPI 1730204884, issued on Mar 20, 2007. Check the license (California 14856, 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
- Stephen Carl Winston
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 14856 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5923 Kanan RD, Agoura Hills, CA 91301
- Phone
- (310) 382-7556
- Enumerated
- Mar 20, 2007
- Record last updated
- Jun 5, 2026
- Fax
- (310) 455-1416
- Medicare enrollment
- Enrolled (PECOS I20090820000745); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 5923 Kanan RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeff Appell, PH.D.Psychologist1740466291
- Mary Chernoff, MFTPsychologist1346253929
- Steven Firestone, M.A.Mental Health Counselor1023330495
- Lisa Harris, PH.D.Clinical Psychologist1730205071
- Tal Leead, PSY.D.Clinical Psychologist1699396119
- Tal LeshemMarriage & Family Therapist1760362081
Verify Stephen Carl Winston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 14856Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Stephen Carl Winston among 12,647 clinical psychologist records in California
Stephen Carl Winston, 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 fileYes · 19% of these records are
- Graduated1990 · median 2006 among the 2,424 with a school on file
- Record last updated2026 · 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).
35 clinical psychologist records list a practice address in Agoura Hills
They are 35 of the 541 NPPES records with a practice address in Agoura Hills, 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 Agoura Hills → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Laura Cavarretta, PHDAgoura Hills, CA 913011871748798
- Shannon Dobbs, PSY.D.Agoura Hills, CA 913011205092046
- Melinda Garabedian, PH.D.Agoura Hills, CA 913011457384604
- Lisa Harris, PH.D.Agoura Hills, CA 913011730205071
- Karin Hart, PSYDAgoura Hills, CA 913011609969260
- Laura Lapiana, PSY.D.Agoura Hills, CA 913011033431655
- Alison Lee, PH.D.Agoura Hills, CA 913011205879574
- Ajay Malhotra, PH.D.Agoura Hills, CA 913011710206420
Common questions
What is Stephen Carl Winston, PH.D.'s NPI number?
Stephen Carl Winston, PH.D.'s National Provider Identifier (NPI) is 1730204884, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Carl Winston, PH.D. located?
The NPPES record lists a practice address at 5923 Kanan RD, Agoura Hills, CA, 91301. Phone: (310) 382-7556. Providers update this record themselves, so call before visiting.
How can I verify Stephen Carl Winston, PH.D.'s license?
NPPES lists California license number 14856, 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.