Mary Johnson, M.D.
NPI 1679639058 · Obstetrics & Gynecology Physician · Ann Arbor, MI
Mary Johnson, M.D. is a Obstetrics & Gynecology Physician provider in Ann Arbor, MI (NPI 1679639058).
Provider details
- NPI number
- 1679639058
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 4301044047 (MI)
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
- 2006-12-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Johnson's NPI number?
- Mary Johnson's National Provider Identifier (NPI) is 1679639058, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Johnson's specialty?
- Mary Johnson is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Johnson located?
- Mary Johnson's practice location on file with NPPES is 2594 E Delhi Rd, Ann Arbor, MI 48103-9006.
- What is Mary Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mary Johnson is (734) 994-5938.
- Is Mary Johnson's NPI active?
- Yes — Mary Johnson's NPI (1679639058) 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.