Michelle Denise Marieni, M.D.
Obstetrics & Gynecology Physician · San Francisco, CA
Michelle Denise Marieni, M.D. is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1942731278, issued on Mar 27, 2017. Check the license (California A176877, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michelle Denise Marieni
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A176877 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1580 Valencia St Ste 508, San Francisco, CA 94110
- Phone
- (415) 641-6996
- Enumerated
- Mar 27, 2017
- Record last updated
- Sep 13, 2022
- Medicare enrollment
- Enrolled (PECOS I20220509000959); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 1580 Valencia St Ste 508
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Breining, CNM, WHNPMidwife1063134328
- Tia Cole, CNMAdvanced Practice Midwife1710493119
- Cheyenne MartinezMidwife1043770795
- Susan McDonald, C.N.M.Advanced Practice Midwife1104846203
- Erika Sawyer, ERIKA SAWYERAdvanced Practice Midwife1447586425
Verify Michelle Denise Marieni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A176877Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
27 Medicare Part D claims for 14 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sutter Bay HospitalsSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michelle Denise Marieni among 5,088 obstetrics & gynecology physician records in California
Michelle Denise Marieni, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Yamilee Bermingham, M.D.San Francisco, CA 941101013937127
- Deborah Cohan, MDSan Francisco, CA 941101831143221
- Craig Cohen, MDSan Francisco, CA 941101306889613
- Teresa Depineres, MDSan Francisco, CA 941101205880796
- Eleanor Drey, MDSan Francisco, CA 941101942254438
- Rebecca Jackson, MDSan Francisco, CA 941101699729640
- Vanessa Jacoby, MDSan Francisco, CA 941101154363778
- Barbara Nicol, M.D.San Francisco, CA 941101710907811
Common questions
What is Michelle Denise Marieni, M.D.'s NPI number?
Michelle Denise Marieni, M.D.'s National Provider Identifier (NPI) is 1942731278, issued on Mar 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Denise Marieni, M.D. located?
The NPPES record lists a practice address at 1580 Valencia St Ste 508, San Francisco, CA, 94110. Phone: (415) 641-6996. Providers update this record themselves, so call before visiting.
How can I verify Michelle Denise Marieni, M.D.'s license?
NPPES lists California license number A176877, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michelle Denise Marieni, M.D. prescribe under Medicare Part D?
In 2024, Michelle Denise Marieni, M.D. had 27 Medicare Part D claims for 14 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Michelle Denise Marieni, M.D.'s MIPS final score?
The 2023 MIPS final score is 82.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.