FREDERICK WILLIAM MAYER (MD) – Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician, NPI 1366417297
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
262 CARDIAC SURGERY in CA
Provider Addresses for FREDERICK WILLIAM MAYER (MD)
505 W MAIN ST
VISALIA, CA 932916149
Phone: (559) 627-8600
Type: Location
4125, West Noble Avenue, Visalia, Tulare County, California, 93277, United States
PMB 323
VISALIA, CA 932771662
Phone: (559) 734-3278
Fax: (503) 627-5723
Type: Mailing
100, Willow Plaza, Visalia, Tulare County, California, 93291, United States
SUITE 301
VISALIA, CA 932916206
Phone: (559) 734-3278
Fax: (503) 627-5723
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $282.
Total Amount is formed as General ($282) + Research ($0) + Ownership ($0) = $282.
Last reported payment date: 2024-09-16 • Largest payer in this snapshot: ATRICURE, INC. ($146).
Total Amount
$282
General + Research + Ownership
Payments
11
Total payment records
General Amount
$282
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ATRICURE, INC. | $146 |
| Chiesi USA, Inc. | $31 |
| Novartis Pharmaceuticals Corporation | $29 |
| ABIOMED | $25 |
| KLS-Martin L.P. | $20 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-11-26
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081126000419 | I | Cardiac Surgery | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 33533 | Coronary artery bypass using artery graft, 1 graft | 49 | 49 | $0 |
| 33508 | Harvest of vein using an endoscope | 48 | 48 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 25 | 25 | $0 |
| 33519 | Coronary artery bypass using vein or artery graft, 3 grafts | 21 | 21 | $0 |
| 33518 | Coronary artery bypass using vein or artery graft, 2 grafts | 19 | 19 | $0 |
Insurance plans in this area (ZIP 93291)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CARDIAC SURGERY | CA | 33533 | Heart artery bypass to repair one artery | 32 | 32 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Diagnostic Radiology | CA | |
| Thoracic Surgery, General Surgery | TX | |
| - | CA | |
| - | CA | |
| Vascular Surgery | CA | |
| - | CA | |
| - | CA | |
| Family Practice | CA |
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