Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Obstetrics/Gynecology

Maureen C. Ries, MD

Works at hospitals in San Diego, CA · California

Summary

Maureen C. Ries, MD (Obstetrics/Gynecology) is listed by Medicare at 1 hospital in San Diego, CA. NPI 1750544516. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Maureen C. Ries, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Obstetrics/GynecologyPrimary specialty
YesAccepts Medicare assignment
18Years since medical school (graduated 2008)
University Of California, San Diego School Of MedicineMedical school
FemaleGender (as listed)
Regents of the University of CaliforniaGroup practice

Quick answers

Which hospitals does Maureen C. Ries work at?
Medicare's official clinician data lists Maureen C. Ries at 1 hospital: UC San Diego Health Hillcrest - Hillcrest Med Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Maureen C. Ries see patients?
Medicare's clinician data lists 1 practice location in San Diego, CA. Call before your visit to confirm the address.
What is Maureen C. Ries's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Maureen C. Ries accept Medicare assignment?
Yes. Medicare's clinician data says Maureen C. Ries accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Maureen C. Ries?
(858) 249-6753, as listed in official Medicare / NPI Registry data.
What is Maureen C. Ries's NPI number?
1750544516. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Maureen C. Ries works

Medicare's Facility Affiliation Data lists Maureen C. Ries at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Maureen C. Ries is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Maureen C. Ries as a member of this group (CMS data updated 2026-10-02).

  • Regents of the University of California2,089 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in San Diego

Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.

All OB-GYNs in San Diego →

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year2008
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750544516
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians