Fred Bayon, M.D.
NPI 1225031362ActiveIndividual· Internal Medicine· Vallejo, CA
Internal Medicine (M.D.) in Vallejo, California, trained at Icahn School of Medicine at Mount Sinai (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $624,370 for 4,492 claims, against $89,984 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 20 companies reporting payments in 2025, $2,084 in all, mostly food and beverage.
Overview
| NPI | 1225031362 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 23, 2005 |
| Last updated in NPPES | Dec 30, 2025 |
| Certified by provider | Dec 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G69611 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 1,015 across 16 procedure codes |
| Paid by Medicare | $89,984 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,492 · 9,093 30-day fills |
|---|---|
| Patients | 326 |
| Total drug cost | $624,370 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Solano Primary Care Medical GroupVallejo, CA · 2 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Medical Center, SacramentoSacramento, CA
- Sutter Solano Medical CenterVallejo, CA
Other facilities
- Mare Island Home Health IncHome health agency · Fairfield, CA
- Mary's Help Home Health Services, IncHome health agency · Vallejo, CA
- Silverline Staff Home HealthHome health agency · Fremont, CA
- Sutter Care at HomeHome health agency · Concord, CA
Industry payments (Open Payments)
- 2025$2,084 · 82 payments from 20 companies
- 2024$2,297 · 111 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $330.51 | 11 |
| Pfizer Inc. | $274.73 | 10 |
| Glaxosmithkline, LLC. | $269.97 | 10 |
| Novo Nordisk Inc | $264.58 | 15 |
| Abbvie Inc. | $221.57 | 9 |
What the 2025 payments were for
- Food and Beverage$2,084 · 82 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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