Frederick William Penczak, MD
NPI 1841379070ActiveIndividual· Surgery· San Rafael, CA
Surgery (MD) in San Rafael, California, trained at Medical College of Pennsylvania (class of 1999). Medicare paid $72,659 for services to 358 patients in 2024. Stryker Corporation reported $327.19 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1841379070 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 6, 2006 |
| Last updated in NPPES | Apr 25, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 00A685120 | 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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 358 |
|---|---|
| Services billed | 463 across 77 procedure codes |
| Paid by Medicare | $72,659 |
Education and affiliations
| Medical school | Medical College of Pennsylvania |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | General Surgery |
| Secondary specialties | Neurosurgery, Orthopedic Surgery |
Hospital affiliations
- Marinhealth Medical CenterGreenbrae, CA
- Novato Community HospitalNovato, CA
Industry payments (Open Payments)
- 2025$327.19 · 8 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $327.19 | 8 |
What the 2025 payments were for
- Food and Beverage$327.19 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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