Alicia Darwin, MD
NPI 1891435806 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alicia Darwin, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1891435806).
Provider details
- NPI number
- 1891435806
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A189198 (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
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 30 |
| Amlodipine Besylate | 18 |
| Apixabanbrand: Eliquis | 17 |
| Metoprolol Succinate | 14 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 14 |
| Pantoprazole Sodium | 12 |
| Acyclovir | 12 |
| Gabapentin | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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
Registry dates
- Enumerated
- 2022-03-29
- Last updated
- 2026-04-04
- Certified
- 2026-04-04
Frequently asked questions
- What is Alicia Darwin's NPI number?
- Alicia Darwin's National Provider Identifier (NPI) is 1891435806, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alicia Darwin's specialty?
- Alicia Darwin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alicia Darwin located?
- Alicia Darwin's practice location on file with NPPES is 2333 Buchanan Street, San Francisco, CA 94115.
- What is Alicia Darwin's phone number?
- The practice phone number listed in the NPPES registry for Alicia Darwin is (415) 600-3600.
- Does Alicia Darwin accept Medicare?
- Alicia Darwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alicia Darwin's NPI active?
- Yes — Alicia Darwin's NPI (1891435806) is active in the NPPES registry as of the last update on 2026-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.