STEPHEN CARL WINSTON PH.D.
NPI 1730204884
Psychologist - Clinical in Agoura Hills, CA
About Stephen Carl Winston Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN CARL WINSTON PH.D. (NPI 1730204884) is an individual clinical provider in Agoura Hills, California, licensed in California (14856) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Stephen Carl Winston Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Stephen Winston reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Agoura Hills, CA 91301
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Broad Horizons Counseling Collective
Inglewood, CA 90301
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: United States Veterans Initiative
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
AGOURA HILLS, CA 91301
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Stephen Winston's NPI number?
The NPI number for Stephen Winston is 1730204884. It was assigned to this individual provider in the NPPES registry on March 20, 2007.
Where is Stephen Winston located?
Stephen Winston practices at 5923 Kanan Rd, Agoura Hills, CA 91301. The listed phone number is (310) 382-7556.
What is Stephen Winston's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Stephen Winston enrolled in Medicare?
Yes. Stephen Winston is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Stephen Winston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Winston reassigns Medicare benefits to 2 organizations: Broad Horizons Marriage And Family Counseling, Prof. Corp. (Agoura Hills, CA) and United States Veterans Initiative - Inglewood (Inglewood, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephen Winston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Stephen Winston was last updated on June 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Stephen Carl Winston, PH.D. · NPI 1730204884
Clinical provider in Agoura Hills, California. Individual provider, active in the CMS NPPES registry since March 20, 2007.
## Identity
- **NPI:** 1730204884 (Entity type: Individual)
- **Enumerated:** March 20, 2007
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 14856 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5923 KANAN RD, Agoura Hills, CA 91301-1688
- **Phone:** (310) 382-7556 · **Fax:** (310) 455-1416
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Broad Horizons Marriage And Family Counseling, Prof. Corp. (NPI 1144461690, Agoura Hills, CA); United States Veterans Initiative - Inglewood (NPI 1629445051, Inglewood, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** June 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1730204884) · Data from the CMS NPPES public registry.