Mary Anne Johnson, M.D.
NPI 1902855067 · Geriatric Medicine (Internal Medicine) Physician · San Francisco, CA
Mary Anne Johnson, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in San Francisco, CA (NPI 1902855067).
Provider details
- NPI number
- 1902855067
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G34015 (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
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
- 2006-05-08
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mary Anne Johnson's NPI number?
- Mary Anne Johnson's National Provider Identifier (NPI) is 1902855067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Anne Johnson's specialty?
- Mary Anne Johnson is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Anne Johnson located?
- Mary Anne Johnson's practice location on file with NPPES is 4150 Clement St, San Francisco, CA 94121-1545.
- What is Mary Anne Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mary Anne Johnson is (415) 221-4810.
- Is Mary Anne Johnson's NPI active?
- Yes — Mary Anne Johnson's NPI (1902855067) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.