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Obstetrics/Gynecology

Jonathan J. Mayer, MD

Sees patients in Reedley, CA · California

Summary

Jonathan J. Mayer, MD (Obstetrics/Gynecology) is enrolled with Medicare at 1 practice location in Reedley, CA. NPI 1043389513. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(866) 707‑6664 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Jonathan J. Mayer, 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

1Practice location
Obstetrics/GynecologyPrimary specialty
YesAccepts Medicare assignment
19Years since medical school (graduated 2007)
MaleGender (as listed)
Omni Family HealthGroup practice

Quick answers

Where does Jonathan J. Mayer see patients?
Medicare's clinician data lists 1 practice location in Reedley, CA. Call before your visit to confirm the address.
What is Jonathan J. Mayer's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Jonathan J. Mayer accept Medicare assignment?
Yes. Medicare's clinician data says Jonathan J. Mayer 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.
What is the phone number for Jonathan J. Mayer?
(866) 707-6664, as listed in official Medicare / NPI Registry data.
What is Jonathan J. Mayer's NPI number?
1043389513. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Jonathan J. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Jonathan J. Mayer as a member of this group (CMS data updated 2026-10-02).

  • Omni Family Health92 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All OB-GYNs in California →

Clinician information

CredentialMD
Graduation year2007
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1043389513
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians