NPPES file of Aug 9, 2026

Gabrielle Stetz Williams, MD

Psychiatry Physician · Westminster, CA

Gabrielle Stetz Williams, MD is a psychiatry physician with a practice address in Westminster, California, and NPI 1609497916, issued on Apr 28, 2020. Check the license (California A184844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609497916
Name
Gabrielle Stetz Williams
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A184844 CA
Self-reported in NPPES; status is on the state search
Practice location
14140 Beach Blvd, Westminster, CA 92683
Phone
(714) 934-4600
Enumerated
Apr 28, 2020
Record last updated
Jul 14, 2025
Medicare enrollment
Enrolled (PECOS I20260128003578); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 2020
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 14140 Beach Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ken AlmaClinical Social Worker1811036932
  2. Joan Cantor BackerMarriage & Family Therapist1497847081
  3. Dolores CastanedaMarriage & Family Therapist1760583967
  4. Jenny CongMarriage & Family Therapist1306092879
  5. Rebecca CrofutClinical Social Worker1033540307
  6. Joshua CrosbyMental Health Counselor1679090054

Verify Gabrielle Stetz Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A184844
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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70% fewer Medicare Part D claims than the average psychiatry physician in 2024

295 Medicare Part D claims for 41 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Gabrielle Williams295
  2. Specialty average1,000

Most prescribed

  1. Duloxetine Hcl37 claims
  2. Quetiapine Fumarate32 claims
  3. Clonazepam24 claims
  4. Sertraline Hcl23 claims
  5. Trazodone Hcl22 claims
  6. Gabapentin11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Gabrielle Stetz Williams among 8,673 psychiatry physician records in California

Gabrielle Stetz Williams, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.

  • NPI issued2020 · 87% of these records are older, 9% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2020 · median 2005 among the 3,295 with a school on file
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Muhammad Anees, M.D.Westminster, CA 926831174961981
  2. Bong Doan, M.D.Westminster, CA 926831528021516
  3. Charles Huffman, M.D.Westminster, CA 926831891923173
  4. Stephanie Kua, MDOrange, CA 926831689979452
  5. Mai Nguyen, M.D.Westminster, CA 926831629015656
  6. Vy Nguyen, M.D.Westminster, CA 926831609296177
  7. Doan Nguyen, MDWestminster, CA 926831336503838
  8. Angela Sureen, M.D.Westminster, CA 926831457762346

Common questions

What is Gabrielle Stetz Williams, MD's NPI number?

Gabrielle Stetz Williams, MD's National Provider Identifier (NPI) is 1609497916, issued on Apr 28, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Gabrielle Stetz Williams, MD located?

The NPPES record lists a practice address at 14140 Beach Blvd, Westminster, CA, 92683. Phone: (714) 934-4600. Providers update this record themselves, so call before visiting.

How can I verify Gabrielle Stetz Williams, MD's license?

NPPES lists California license number A184844, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gabrielle Stetz Williams, MD prescribe under Medicare Part D?

In 2024, Gabrielle Stetz Williams, MD had 295 Medicare Part D claims for 41 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.