Maureen Christie Ries, M.D.
Obstetrics & Gynecology Physician · La Jolla, CA
Maureen Christie Ries, M.D. is an obstetrics & gynecology physician with a practice address in La Jolla, California, and NPI 1750544516, issued on Jul 2, 2008. Check the license (California A127234, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maureen Christie Ries
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A127234 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8910 Villa LA Jolla Dr, La Jolla, CA 92037
- Phone
- (800) 926-8273
- Enumerated
- Jul 2, 2008
- Record last updated
- Nov 13, 2025
- Medicaid IDs
- 0066528 OH
3810023292 WV - Medicare enrollment
- Enrolled (PECOS I20141119002748); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 8910 Villa LA Jolla Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sanjay Agarwal, M.D.Reproductive Endocrinology Physician1255489720
- Laura Biver, MDObstetrics & Gynecology Physician1669091427
- Brian Chin, MDEmergency Medicine Physician1770140782
- Pamela Deak, M.D.Obstetrics & Gynecology Physician1316978554
- Pratima Gupta, MDObstetrics & Gynecology Physician1891749842
- Matthew LippiEmergency Medicine Physician1932736485
Verify Maureen Christie Ries in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127234Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
80 Medicare Part D claims for 22 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Estradiol19 claims
- Estradiol (Once Weekly)18 claims
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.
Industry payments in 2024: $26.36
1 payment: food and beverage; the largest payer was Abbvie Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maureen Christie Ries among 5,088 obstetrics & gynecology physician records in California
Maureen Christie Ries, 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 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2008 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 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).
68 obstetrics & gynecology physician records list a practice address in La Jolla
They are 68 of the 3,648 NPPES records with a practice address in La Jolla, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in La Jolla → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Timothy Bilash, M.D., M.S.La Jolla, CA 920371437189545
- Seth Bulow, M.D.La Jolla, CA 920371174635320
- Chrysten Cunningham, DOLa Jolla, CA 920371265435606
- Pamela Deak, M.D.La Jolla, CA 920371316978554
- Maureen Farrell, M.D.La Jolla, CA 920371508842303
- Robert Gordon, M.D.La Jolla, CA 920371619944030
- Pratima Gupta, MDLa Jolla, CA 920371891749842
- Patrick Haggerty, MDLa Jolla, CA 920371245280841
Common questions
What is Maureen Christie Ries, M.D.'s NPI number?
Maureen Christie Ries, M.D.'s National Provider Identifier (NPI) is 1750544516, issued on Jul 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Maureen Christie Ries, M.D. located?
The NPPES record lists a practice address at 8910 Villa LA Jolla Dr, La Jolla, CA, 92037. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.
How can I verify Maureen Christie Ries, M.D.'s license?
NPPES lists California license number A127234, 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 Maureen Christie Ries, M.D. prescribe under Medicare Part D?
In 2024, Maureen Christie Ries, M.D. had 80 Medicare Part D claims for 22 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.