Aaron Williams, MD
NPI 1982783627 · Internal Medicine Physician · Santa Clara, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Williams, MD is a Internal Medicine Physician provider in Santa Clara, CA (NPI 1982783627).
Provider details
- NPI number
- 1982783627
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A76508 (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 · 85 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 421 | 138 |
| Amlodipine Besylate | 356 | 123 |
| Losartan Potassium | 235 | 77 |
| Lisinopril | 221 | 75 |
| Levothyroxine Sodium | 170 | 51 |
| Hydrochlorothiazide | 167 | 61 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2021-12-09
Frequently asked questions
- What is Aaron Williams's NPI number?
- Aaron Williams's National Provider Identifier (NPI) is 1982783627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Williams's specialty?
- Aaron Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Williams located?
- Aaron Williams's practice location on file with NPPES is 710 Lawrence Expy, Santa Clara, CA 95051-5173.
- What is Aaron Williams's phone number?
- The practice phone number listed in the NPPES registry for Aaron Williams is (408) 851-1000.
- Does Aaron Williams accept Medicare?
- Aaron Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Williams's NPI active?
- Yes — Aaron Williams's NPI (1982783627) 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.