Gabrielle Williams, MD
NPI 1609497916 · Psychiatry Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gabrielle Williams, MD is a Psychiatry Physician provider in Westminster, CA (NPI 1609497916).
Provider details
- NPI number
- 1609497916
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A184844 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Duloxetine Hcl | 37 |
| Quetiapine Fumarate | 32 |
| Clonazepam | 24 |
| Sertraline Hcl | 23 |
| Trazodone Hcl | 22 |
| Gabapentin | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 4000 W Metropolitan Dr Ste 120Orange, CA 92868-3504Phone: (714) 972-3700
Registry dates
- Enumerated
- 2020-04-28
- Last updated
- 2025-07-14
- Certified
- 2025-07-14
Frequently asked questions
- What is Gabrielle Williams's NPI number?
- Gabrielle Williams's National Provider Identifier (NPI) is 1609497916, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gabrielle Williams's specialty?
- Gabrielle Williams is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gabrielle Williams located?
- Gabrielle Williams's practice location on file with NPPES is 14140 Beach Blvd, Westminster, CA 92683-4453.
- What is Gabrielle Williams's phone number?
- The practice phone number listed in the NPPES registry for Gabrielle Williams is (714) 934-4600.
- Does Gabrielle Williams accept Medicare?
- Gabrielle Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gabrielle Williams's NPI active?
- Yes — Gabrielle Williams's NPI (1609497916) is active in the NPPES registry as of the last update on 2025-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.