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Dr. Jan S. Eperjesi, M.D.

OB-GYN (Obstetrics & Gynecology) (Obstetrics & Gynecology Physician)

  • Medicare participating

At a glance

Years since graduation
16
In the NPI registry since
2010
Medicare patients seen, 2024
18

Licensed in California since 2014, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2010Medical school: San Juan Bautista School of Medicine
  • 2010Registered with an NPI (national billing number; not a license date)

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Obstetrics & Gynecology Physician primary
    CA license A129250 (first issued 2014; current)
  • Hospitalist Physician
    CA license A129250 (first issued 2014; current)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: OB-GYN (Obstetrics & Gynecology) per capita by county →

Where they work

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
18
Services billed
27
Patients’ average age
70
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes2116

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Other OB-GYN (Obstetrics & Gynecology) clinicians in Oxnard

Sources

NPI registry (CMS NPPES, November 2026; record last updated November 2, 2023), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1528389020. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.