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Obstetrics/Gynecology

Edwin R. Ramirez, MD

Works at hospitals in Simi Valley, CA · Ventura, CA · Oxnard, CA · California

Summary

Edwin R. Ramirez, MD (Obstetrics/Gynecology) is listed by Medicare at 3 hospitals in Simi Valley, CA, Ventura, CA and Oxnard, CA. NPI 1558683920. 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 Edwin R. Ramirez, 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
YesOffers telehealth
26Years since medical school (graduated 2000)
MaleGender (as listed)

Quick answers

Which hospitals does Edwin R. Ramirez work at?
Medicare's official clinician data lists Edwin R. Ramirez at 3 hospitals: Adventist Health Simi Valley, Community Memorial Hospital - Ventura and St Johns Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Edwin R. Ramirez see patients?
Medicare's clinician data lists 1 practice location in Oxnard, CA. Call before your visit to confirm the address.
What is Edwin R. Ramirez's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Edwin R. Ramirez accept Medicare assignment?
Yes. Medicare's clinician data says Edwin R. Ramirez 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.
Does Edwin R. Ramirez offer telehealth?
Medicare's clinician data says Edwin R. Ramirez offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Edwin R. Ramirez?
(805) 278-0190, as listed in official Medicare / NPI Registry data.
What is Edwin R. Ramirez's NPI number?
1558683920. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Edwin R. Ramirez works

Medicare's Facility Affiliation Data lists Edwin R. Ramirez 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 Edwin R. Ramirez is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in Oxnard

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

All OB-GYNs in Oxnard →

Clinician information

CredentialMD
Graduation year2000
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1558683920
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