Frederick William Mayer, MD
NPI 1366417297ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Visalia, CA
Thoracic Surgery (Cardiothoracic Vascular Surgery) (MD) in Visalia, California, trained at Wake Forest University School of Medicine (class of 1976). Mostly services rather than prescriptions: Medicare paid $79,190 for 111 patients in 2024, with only 36 Part D claims. Abiomed was the largest of 2 companies reporting payments in 2025, $146.74 in all, mostly food and beverage.
Overview
| NPI | 1366417297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Mar 17, 2022 |
| Certified by provider | Mar 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | G35454 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiac Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 111 |
|---|---|
| Services billed | 230 across 35 procedure codes |
| Paid by Medicare | $79,190 |
Part D prescriptions in 2024
| Prescriptions (claims) | 36 · 61 30-day fills |
|---|---|
| Patients | 22 |
| Total drug cost | $681.65 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Wake Forest University School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Cardiac Surgery |
Medical group
- Kaweah Delta Health Care DistrictVisalia, CA · 110 clinicians
Hospital affiliation
- Kaweah Health Medical CenterVisalia, CA
Industry payments (Open Payments)
- 2025$146.74 · 2 payments from 2 companies
- 2024$83.32 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $125.62 | 1 |
| Atricure, Inc. | $21.12 | 1 |
What the 2025 payments were for
- Food and Beverage$146.74 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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