Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michelle Denise Marieni, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1942731278

Michelle Denise Marieni, MD practises Obstetrics/Gynecology in San Francisco, California. Graduated from Creighton University School of Medicine in 2017, 9 years ago. Practices with Sutter Bay Hospitals, a 69-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Trained at
Creighton University School of Medicine
Licensed in
CA
In the registry since
2017
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

San Francisco, CA

No coordinates on file. Search this address in Google Maps

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence A176877 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1942731278
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2017
Last updated in NPPESSeptember 13, 2022
Certification dateSeptember 13, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Sutter Bay Hospitals — 69 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of the uterus 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients14
Services billed 17 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Sutter Bay Hospitals

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 69 clinicians in the practice; 12 are shown here.

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