James Heffelfinger, M.D.
NPI 1619931698 · Infectious Disease Physician · San Rafael, CA
James Heffelfinger, M.D. is a Infectious Disease Physician provider in San Rafael, CA (NPI 1619931698).
Provider details
- NPI number
- 1619931698
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G76725 (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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1101 Van Ness AveSan Francisco, CA 94109-6919Phone: (415) 600-6000
Registry dates
- Enumerated
- 2006-04-14
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is James Heffelfinger's NPI number?
- James Heffelfinger's National Provider Identifier (NPI) is 1619931698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Heffelfinger's specialty?
- James Heffelfinger is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is James Heffelfinger located?
- James Heffelfinger's practice location on file with NPPES is 3260 Kerner Blvd, San Rafael, CA 94901-4840.
- What is James Heffelfinger's phone number?
- The practice phone number listed in the NPPES registry for James Heffelfinger is (154) 481-5004.
- Is James Heffelfinger's NPI active?
- Yes — James Heffelfinger's NPI (1619931698) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.