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STEPHEN CARL WINSTON PH.D.
NPI 1730204884
Psychologist - Clinical in Agoura Hills, CA

Active since March 20, 2007PECOS Enrolled
5923 KANAN RD, AGOURA HILLS, CA 91301(310) 382-7556(310) 455-1416 Get Directions Write a Review

NPPES record last updated: June 5, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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

NPI1730204884
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameSTEPHEN CARL WINSTONCredential: PH.D.
Location Address5923 KANAN RDAgoura Hills, CA 91301-1688
Mailing AddressPo Box 1410Topanga, CA 90290-1410 · (310) 382-7556 · Fax (310) 455-1416
Phone(310) 382-7556
Fax(310) 455-1416
Sole ProprietorYes
Medical School CMSOtherGraduated 1990
Enumeration DateMarch 20, 2007
Last NPPES UpdateJune 5, 2026
NPPES CertifiedJune 5, 2026
✔ NPI 1730204884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · 14856
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
5923 KANAN RD, Agoura Hills, CA 91301
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephen Carl Winston Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8224182597
PECOS Enrollment IDI20090820000745
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MR. STEVEN G FIRESTONE M.A.
Counselor (Mental Health)
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (818) 889-3905
CASSANDRA SCOTT
Social Worker (Clinical)
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (310) 866-2606
SUZANNE GILL SCHUDA LMFT
Marriage & Family Therapist
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (818) 324-1807
BROAD HORIZONS MARRIAGE AND FAMILY COUNSELING, PROF. CORP.
Clinic/Center (Mental Health (Including Community Mental Health Center))
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (310) 866-2606
MRS. BATYA BLOISE ZIMMERMAN MFT
Marriage & Family Therapist
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (818) 371-1954
JESSICA LICHT
Marriage & Family Therapist
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (310) 957-9064
DR. MARY ELAINE CHERNOFF MFT
Psychologist
5923 KANAN RD, SUITE 204
AGOURA HILLS, CA 91301
Los Angeles County (818) 889-6764
VERONICA SHEFTZ WINSTON MFT
Marriage & Family Therapist
5923 KANAN RD
AGOURA HILLS, CA 91301
Los Angeles County (310) 866-2606

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.

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 2 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.