Aaron Lewis, MD
NPI 1255419750 · Neurology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Lewis, MD is a Neurology Physician provider in San Francisco, CA (NPI 1255419750).
Provider details
- NPI number
- 1255419750
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A78048 (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
19 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 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 90 | 30 |
| Gabapentin | 77 | 37 |
| Levetiracetam | 68 | 26 |
| Donepezil Hcl | 58 | 22 |
| Clonazepam | 54 | — |
| Propranolol Hcl | 52 | 20 |
| Topiramate | 41 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-09
Frequently asked questions
- What is Aaron Lewis's NPI number?
- Aaron Lewis's National Provider Identifier (NPI) is 1255419750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Lewis's specialty?
- Aaron Lewis is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Lewis located?
- Aaron Lewis's practice location on file with NPPES is 2200 Ofarrell St, San Francisco, CA 94115-3357.
- What is Aaron Lewis's phone number?
- The practice phone number listed in the NPPES registry for Aaron Lewis is (415) 833-2000.
- Does Aaron Lewis accept Medicare?
- Aaron Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Lewis's NPI active?
- Yes — Aaron Lewis's NPI (1255419750) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.