Denis Robert Westphal, M.D.
NPI 1285640243ActiveIndividual· Surgery· Chico, CA
Surgery (M.D.) in Chico, California, trained at Loma Linda University School of Medicine (class of 1982). 401 Medicare patients in 2024, $100,146 paid; nearly all of their 215 Part D prescriptions were generic (95%). Abiomed reported $109.45 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1285640243 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Apr 27, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | G50664 | CA |
| Surgery, Surgical Critical Care | 2086S0102X | G50664 | CA |
| Surgery, Trauma Surgery | 2086S0127X | G50664 | CA |
| Surgery, Vascular Surgery | 2086S0129X | G50664 | 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 | 401 |
|---|---|
| Services billed | 2,199 across 19 procedure codes |
| Paid by Medicare | $100,146 |
Part D prescriptions in 2024
| Prescriptions (claims) | 215 · 217 30-day fills |
|---|---|
| Patients | 108 |
| Total drug cost | $8,218 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | General Surgery |
Medical group
- Enloe Medical CenterChico, CA · 333 clinicians
Hospital affiliations
- Enloe HealthChico, CA
- Oroville HospitalOroville, CA
Other facilities
- Butte Home Health and HospiceHome health agency · Chico, CA
Industry payments (Open Payments)
- 2025$109.45 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $109.45 | 1 |
What the 2025 payments were for
- Food and Beverage$109.45 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 general surgeons in Chico · All general surgeons in California