Mary Marnach, M.D.
NPI 1790756096 · Obstetrics & Gynecology Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Marnach, M.D. is a Obstetrics & Gynecology Physician provider in Rochester, MN (NPI 1790756096).
Provider details
- NPI number
- 1790756096
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 38722 (MN)
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
- 2006-01-27
- Last updated
- 2020-08-18
- Certified
- 2020-08-18
Frequently asked questions
- What is Mary Marnach's NPI number?
- Mary Marnach's National Provider Identifier (NPI) is 1790756096, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Marnach's specialty?
- Mary Marnach is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Marnach located?
- Mary Marnach's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is Mary Marnach's phone number?
- The practice phone number listed in the NPPES registry for Mary Marnach is (507) 284-2511.
- Does Mary Marnach accept Medicare?
- Mary Marnach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Marnach's NPI active?
- Yes — Mary Marnach's NPI (1790756096) is active in the NPPES registry as of the last update on 2020-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.