John Gunderson, MD
NPI 1215074794 · Occupational Medicine Physician · Concord, CA
John Gunderson, MD is a Occupational Medicine Physician provider in Concord, CA (NPI 1215074794).
Provider details
- NPI number
- 1215074794
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C032589 (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
- 2007-01-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Gunderson's NPI number?
- John Gunderson's National Provider Identifier (NPI) is 1215074794, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gunderson's specialty?
- John Gunderson is listed in the NPPES registry with a primary specialty of Occupational Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Gunderson located?
- John Gunderson's practice location on file with NPPES is 2231 Galaxy Ct, Concord, CA 94520-4933.
- What is John Gunderson's phone number?
- The practice phone number listed in the NPPES registry for John Gunderson is (925) 685-7744.
- Is John Gunderson's NPI active?
- Yes — John Gunderson's NPI (1215074794) 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.