Gabrielle Horner, MD
NPI 1396328423 · Hospitalist Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gabrielle Horner, MD is a Hospitalist Physician provider in Los Angeles, CA (NPI 1396328423).
Provider details
- NPI number
- 1396328423
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A202152 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 16 |
| Lipase/Protease/Amylasebrand: Creon | 13 |
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)
- 1051 N Canton Center RdCanton, MI 48187-5097Phone: (734) 844-5400
Registry dates
- Enumerated
- 2021-05-05
- Last updated
- 2025-08-01
- Certified
- 2025-08-01
Frequently asked questions
- What is Gabrielle Horner's NPI number?
- Gabrielle Horner's National Provider Identifier (NPI) is 1396328423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gabrielle Horner's specialty?
- Gabrielle Horner is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Gabrielle Horner located?
- Gabrielle Horner's practice location on file with NPPES is 757 Westwood Plz Ste 7501, Los Angeles, CA 90095-5097.
- What is Gabrielle Horner's phone number?
- The practice phone number listed in the NPPES registry for Gabrielle Horner is (310) 267-9643.
- Does Gabrielle Horner accept Medicare?
- Gabrielle Horner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gabrielle Horner's NPI active?
- Yes — Gabrielle Horner's NPI (1396328423) is active in the NPPES registry as of the last update on 2025-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.