Mary Jean Stempien, M.D.
NPI 1073734521 · Internal Medicine Physician · San Francisco, CA
Mary Jean Stempien, M.D. is a Internal Medicine Physician provider in San Francisco, CA (NPI 1073734521).
Provider details
- NPI number
- 1073734521
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G68722 (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
- 2007-05-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Jean Stempien's NPI number?
- Mary Jean Stempien's National Provider Identifier (NPI) is 1073734521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Jean Stempien's specialty?
- Mary Jean Stempien is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Jean Stempien located?
- Mary Jean Stempien's practice location on file with NPPES is 325 Santa Ana Ave, San Francisco, CA 94127-1952.
- What is Mary Jean Stempien's phone number?
- The practice phone number listed in the NPPES registry for Mary Jean Stempien is (415) 334-1427.
- Is Mary Jean Stempien's NPI active?
- Yes — Mary Jean Stempien's NPI (1073734521) 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.