Donald Zumwalt
NPI 1457489825 · Internal Medicine Physician · San Francisco, CA
Donald Zumwalt is a Internal Medicine Physician provider in San Francisco, CA (NPI 1457489825).
Provider details
- NPI number
- 1457489825
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- G50572 (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
- 2007-02-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Donald Zumwalt's NPI number?
- Donald Zumwalt's National Provider Identifier (NPI) is 1457489825, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Zumwalt's specialty?
- Donald Zumwalt is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Zumwalt located?
- Donald Zumwalt's practice location on file with NPPES is 2333 Buchanan St, San Francisco, CA 94115-1925.
- What is Donald Zumwalt's phone number?
- The practice phone number listed in the NPPES registry for Donald Zumwalt is (925) 634-9704.
- Is Donald Zumwalt's NPI active?
- Yes — Donald Zumwalt's NPI (1457489825) 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.