Quick answers
- Which hospitals does Frederick W. Mayer work at?
- Medicare's official clinician data lists Frederick W. Mayer at 1 hospital: Kaweah Health Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frederick W. Mayer see patients?
- Medicare's clinician data lists 1 practice location in Visalia, CA. Call before your visit to confirm the address.
- What is Frederick W. Mayer's specialty?
- Medicare lists Cardiac Surgery as the primary specialty.
- Does Frederick W. Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says Frederick W. 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 Frederick W. Mayer?
- (559) 627-6149, as listed in official Medicare / NPI Registry data.
- What is Frederick W. Mayer's NPI number?
- 1366417297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frederick W. Mayer works
Medicare's Facility Affiliation Data lists Frederick W. Mayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaweah Health Medical CenterVisalia, CA · Acute Care Hospital · CCN 050057
Practice locations
Addresses where Frederick W. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 505 W Main St, Suite BVisalia, CA 93291 (559) 627‑6149
Group practices
Medicare enrollment lists Frederick W. Mayer as a member of this group (CMS data updated 2026-10-02).
- Kaweah Delta Health Care District110 clinicians in the group
Specialties
- Cardiac Surgeryprimary
Other cardiac surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wake Forest University School Of Medicine |
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366417297 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians