Jan Stefan Eperjesi, M.D.
Obstetrics & Gynecology Physician · Oxnard, CA
Jan Stefan Eperjesi, M.D. is an obstetrics & gynecology physician with a practice address in Oxnard, California, and NPI 1528389020, issued on Jun 18, 2010. Check the license (California A129250, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jan Stefan Eperjesi
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A129250 CA
Self-reported in NPPES; status is on the state search - Practice location
- St. John's Regional Medical Center - 1600 N Rose Ave, Oxnard, CA 93030
- Phone
- (000) 000-0000
- Enumerated
- Jun 18, 2010
- Record last updated
- Nov 2, 2023
- Fax
- (805) 256-7840
- Medicare enrollment
- Enrolled (PECOS I20140722000901); accepts Medicare assignment
- Medical or professional school
- San Juan Bautista School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at St. John's Regional Medical Center - 1600 N Rose Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jan Stefan Eperjesi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
40 Medicare Part D claims for 12 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
2 hospitals and group practices
- Reedley Community HospitalReedley, CA
- Southern Monterey County Memorial HospitalKing City, CA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Jan Stefan Eperjesi among 5,088 obstetrics & gynecology physician records in California
Jan Stefan Eperjesi, 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% 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 updated2023 · 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 Oxnard → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Scott Changchien, M.D.Oxnard, CA 930301902850555
- Julian Chiang, M.D.Oxnard, CA 930301043276363
- Antoine Hanna, MDOxnard, CA 930301104855600
- Sarah Harrington, MDOxnard, CA 930301881095644
- Tzong HuangOxnard, CA 930301407800121
- James Ingaglio, M.D.Oxnard, CA 930301124006838
- Tajinder Kaur, M.D.Ventura, CA 930301124035969
- Adrienne Lara, M.D.Oxnard, CA 930301871695759
Common questions
What is Jan Stefan Eperjesi, M.D.'s NPI number?
Jan Stefan Eperjesi, M.D.'s National Provider Identifier (NPI) is 1528389020, issued on Jun 18, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Jan Stefan Eperjesi, M.D. located?
The NPPES record lists a practice address at St. John's Regional Medical Center - 1600 N Rose Ave, Oxnard, CA, 93030. Phone: (000) 000-0000. Providers update this record themselves, so call before visiting.
How can I verify Jan Stefan Eperjesi, M.D.'s license?
NPPES lists California license number A129250, 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 Jan Stefan Eperjesi, M.D. prescribe under Medicare Part D?
In 2024, Jan Stefan Eperjesi, M.D. had 40 Medicare Part D claims for 12 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Jan Stefan Eperjesi, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.