Ashwini Mahajan, MD
NPI 1659458503 · Hospitalist Physician · Santa Clara, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashwini Mahajan, MD is a Hospitalist Physician provider in Santa Clara, CA (NPI 1659458503).
Provider details
- NPI number
- 1659458503
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A63901 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2021-12-17
Frequently asked questions
- What is Ashwini Mahajan's NPI number?
- Ashwini Mahajan's National Provider Identifier (NPI) is 1659458503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ashwini Mahajan's specialty?
- Ashwini Mahajan is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ashwini Mahajan located?
- Ashwini Mahajan's practice location on file with NPPES is 900 Kiely Blvd, Santa Clara, CA 95051-5329.
- What is Ashwini Mahajan's phone number?
- The practice phone number listed in the NPPES registry for Ashwini Mahajan is (408) 236-6400.
- Does Ashwini Mahajan accept Medicare?
- Ashwini Mahajan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ashwini Mahajan's NPI active?
- Yes — Ashwini Mahajan's NPI (1659458503) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.