Stephen Winston, PH.D.
NPI 1730204884 · Clinical Psychologist · Agoura Hills, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Winston, PH.D. is a Clinical Psychologist provider in Agoura Hills, CA (NPI 1730204884).
Provider details
- NPI number
- 1730204884
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 14856 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2026-06-05
- Certified
- 2026-06-05
Frequently asked questions
- What is Stephen Winston's NPI number?
- Stephen Winston's National Provider Identifier (NPI) is 1730204884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Winston's specialty?
- Stephen Winston is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephen Winston located?
- Stephen Winston's practice location on file with NPPES is 5923 Kanan Rd, Agoura Hills, CA 91301-1688.
- What is Stephen Winston's phone number?
- The practice phone number listed in the NPPES registry for Stephen Winston is (310) 382-7556.
- Does Stephen Winston accept Medicare?
- Stephen Winston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Winston's NPI active?
- Yes — Stephen Winston's NPI (1730204884) is active in the NPPES registry as of the last update on 2026-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.