John Clausen, MD
NPI 1942386461 · Hospitalist Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Clausen, MD is a Hospitalist Physician provider in San Jose, CA (NPI 1942386461).
Provider details
- NPI number
- 1942386461
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A75348 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 38 | 23 |
| Metoprolol Tartrate | 20 | 17 |
| Tamsulosin Hcl | 19 | — |
| Clopidogrel Bisulfatebrand: Clopidogrel | 16 | 11 |
| Doxycycline Monohydrate | 15 | 15 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 15 | — |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2021-12-13
Frequently asked questions
- What is John Clausen's NPI number?
- John Clausen's National Provider Identifier (NPI) is 1942386461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Clausen's specialty?
- John Clausen is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is John Clausen located?
- John Clausen's practice location on file with NPPES is 260 International Cir, San Jose, CA 95119-1130.
- What is John Clausen's phone number?
- The practice phone number listed in the NPPES registry for John Clausen is (408) 972-7000.
- Does John Clausen accept Medicare?
- John Clausen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Clausen's NPI active?
- Yes — John Clausen's NPI (1942386461) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.