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GABRIELLE STETZ WILLIAMS MD
NPI 1609497916
Psychiatry & Neurology - Psychiatry in Westminster, CA

Active since April 28, 2020PECOS EnrolledAccepts Medicare Assignment
14140 BEACH BLVD, WESTMINSTER, CA 92683(714) 934-4600 Get Directions Write a Review

NPPES record last updated: July 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 7, 2024, May 25, 2023 (2 updates tracked since 2023).

About Gabrielle Stetz Williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GABRIELLE STETZ WILLIAMS MD (NPI 1609497916) is an individual psychiatry provider in Westminster, California, licensed in California (A184844) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Orange, and is a graduate of University Of California, Irvine, California College Of Medicine (2020).

NPPES Registry Identity

NPI1609497916
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameGABRIELLE STETZ WILLIAMSCredential: MD
Location Address14140 BEACH BLVDWestminster, CA 92683-4453
Mailing Address3800 W Chapman Ave Ste 500Orange, CA 92868-1638 · (619) 964-8963
Phone(714) 934-4600
Sole ProprietorYes
Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2020
Enumeration DateApril 28, 2020
Last NPPES UpdateJuly 14, 20252 updates tracked since enumeration
NPPES CertifiedJuly 14, 2025
✔ NPI 1609497916 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A184844
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
14140 BEACH BLVD, Westminster, CA 92683
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Secondary Practice Location 1

Location 14000 W Metropolitan Dr Ste 120Orange, CA 92868-3504 · Phone (714) 972-3700

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gabrielle Stetz Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7618455908
PECOS Enrollment IDI20260128003578
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.

Medicare Billing Reassignment

Medicare enrollment records show Gabrielle Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Orange
Same address
Adolescent and Children Mental Health
14140 BEACH BLVD, SUITE 155
Westminster, CA 92683
  • Reassigned Medicare billing, California enrollment
  • 119 clinicians in this Medicare group
NPI 1124165667 (714) 896-7556

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 92683 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

REBECCA ANN PATCH CROFUT
Social Worker (Clinical)
14140 BEACH BLVD, 155
WESTMINSTER, CA 92683
Orange County (714) 896-7556
MR. JAMES THANG LE
Counselor (Mental Health)
14140 BEACH BLVD, SUITE 223
WESTMINSTER, CA 92683
Orange County (714) 896-7566
COUNTY OF ORANGE
Clinic/Center (Adolescent and Children Mental Health)
14140 BEACH BLVD, SUITE 155
WESTMINSTER, CA 92683
Orange County (714) 896-7556
MR. DAT TIEN DINH LMFT110788
Marriage & Family Therapist
14140 BEACH BLVD, SUITE 223
WESTMINSTER, CA 92683
Orange County (714) 896-7566
DR. NATHANIEL JOSEPH LOPEZ PH.D.
Psychologist (Clinical)
14140 BEACH BLVD
WESTMINSTER, CA 92683
Orange County (714) 896-7556
MAI-TRAM THI NGUYEN B.A.
Counselor (Mental Health)
14140 BEACH BLVD, SUITE # 223
WESTMINSTER, CA 92683
Orange County (714) 896-7566
ERIN JOY SAGUBO LCSW
Social Worker (Clinical)
14140 BEACH BLVD, SUITE 223
WESTMINSTER, CA 92683
Orange County (714) 896-7566
TAMARA RAMIREZ
Counselor (Mental Health)
14140 BEACH BLVD, #200
WESTMINSTER, CA 92683
Orange County (714) 896-7574

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 Gabrielle Williams's NPI number?

The NPI number for Gabrielle Williams is 1609497916. It was assigned to this individual provider in the NPPES registry on April 28, 2020.

Where is Gabrielle Williams located?

Gabrielle Williams practices at 14140 Beach Blvd, Westminster, CA 92683. The listed phone number is (714) 934-4600.

What is Gabrielle Williams's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Gabrielle Williams enrolled in Medicare?

Yes. Gabrielle Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Gabrielle Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gabrielle Williams reassigns Medicare benefits to County Of Orange (Westminster, CA). The 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 Gabrielle Williams'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 Gabrielle Williams was last updated on July 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.