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William Clusin, MD
NPI 1295816643 · Internal Medicine Physician · Stanford, CA
William Clusin, MD is a Internal Medicine Physician provider in Stanford, CA (NPI 1295816643).
Provider details
- NPI number
- 1295816643
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G35051 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
300 Pasteur Drive
H2152 Cardiology
Stanford, CA 94305
Phone: (650) 723-7395
Fax: (650) 725-7568
Approximate (ZIP-level) locationGet directions
Mailing address
946 Valdez Place
Stanford, CA 94305
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Clusin's NPI number?
- William Clusin's National Provider Identifier (NPI) is 1295816643, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Clusin's specialty?
- William Clusin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Clusin located?
- William Clusin's practice location on file with NPPES is 300 Pasteur Drive, Stanford, CA 94305.
- What is William Clusin's phone number?
- The practice phone number listed in the NPPES registry for William Clusin is (650) 723-7395.
- Is William Clusin's NPI active?
- Yes — William Clusin's NPI (1295816643) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.