Michelle Marieni, M.D.
NPI 1942731278 · Obstetrics & Gynecology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Marieni, M.D. is a Obstetrics & Gynecology Physician provider in San Francisco, CA (NPI 1942731278).
Provider details
- NPI number
- 1942731278
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2017-03-27
- Last updated
- 2022-09-13
- Certified
- 2022-09-13
Frequently asked questions
- What is Michelle Marieni's NPI number?
- Michelle Marieni's National Provider Identifier (NPI) is 1942731278, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Marieni's specialty?
- Michelle Marieni is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Marieni located?
- Michelle Marieni's practice location on file with NPPES is 1580 Valencia St Ste 508, San Francisco, CA 94110-4415.
- What is Michelle Marieni's phone number?
- The practice phone number listed in the NPPES registry for Michelle Marieni is (415) 641-6996.
- Does Michelle Marieni accept Medicare?
- Michelle Marieni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Marieni's NPI active?
- Yes — Michelle Marieni's NPI (1942731278) is active in the NPPES registry as of the last update on 2022-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.