Mariah C. Grace, D.O
Obstetrics & Gynecology Physician · Fresno, CA
Mariah C. Grace, D.O is an obstetrics & gynecology physician with a practice address in Fresno, California, and NPI 1164727368, issued on Jan 19, 2011. Check the license (California 20A12329, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mariah C. Grace
- Credential
- D.O
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A12329 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 North Fresno Stree, Fresno, CA 93701
- Phone
- (559) 459-3934
- Enumerated
- Jan 19, 2011
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141216001680); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Mariah C. Grace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
49 Medicare Part D claims for 16 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol20 claims
- Progesterone11 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: $50.32
2 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US 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
- Scripps HealthEncinitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariah C. Grace among 5,088 obstetrics & gynecology physician records in California
Mariah C. Grace, D.O 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 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2010 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 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 Fresno → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Nahia Amoura, MDFresno, CA 937011891752606
- Christopher Downer, M.D.Fresno, CA 937011205003233
- Pamela Emeney, M.D.Fresno, CA 937011033260559
- Paul Madsen, M.D.Fresno, CA 937011053337014
- Shelley McCormack, MD/PHARMDFresno, CA 937011275920431
- Kim Morris, N.P.Fresno, CA 937011043345853
- Teresa MunozFresno, CA 937011700112943
- Diana Nguyen, M.D.Fresno, CA 937011316241847
Common questions
What is Mariah C. Grace, D.O's NPI number?
Mariah C. Grace, D.O's National Provider Identifier (NPI) is 1164727368, issued on Jan 19, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mariah C. Grace, D.O located?
The NPPES record lists a practice address at 150 North Fresno Stree, Fresno, CA, 93701. Phone: (559) 459-3934. Providers update this record themselves, so call before visiting.
How can I verify Mariah C. Grace, D.O's license?
NPPES lists California license number 20A12329, 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 Mariah C. Grace, D.O prescribe under Medicare Part D?
In 2024, Mariah C. Grace, D.O had 49 Medicare Part D claims for 16 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.