Sergio R. Riffel, M.D.
NPI 1619018066ActiveIndividual· General Practice· Chico, CA
General Practice (M.D.) with Vital Health Ca Medical Group, practicing in Chico, California. Their prescriptions cost Medicare Part D more than their services did: $265,276 for 3,345 claims, against $75,022 paid for services in 2024. Novo Nordisk Inc was the largest of 4 companies reporting payments in 2025, $320.21 in all, mostly food and beverage. Lists Sierra Nevada Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1619018066 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 9, 2007 |
| Last updated in NPPES | Jun 3, 2024 |
| Certified by provider | Jun 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | A41494 | CA |
| Hospitalist | 208M00000X | 016873 | ME |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 546 |
|---|---|
| Services billed | 1,791 across 36 procedure codes |
| Paid by Medicare | $75,022 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,345 · 7,819 30-day fills |
|---|---|
| Patients | 570 |
| Total drug cost | $265,276 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Vital Health Ca Medical GroupPenn Valley, CA · 2 clinicians
Hospital affiliations
- Sierra Nevada Memorial HospitalGrass Valley, CA
- Sutter Auburn Faith HospitalAuburn, CA
Other facilities
- Advanced Home Health, IncHome health agency · Roseville, CA
- Progressive Home Care - AuburnHome health agency · Auburn, CA
Industry payments (Open Payments)
- 2025$320.21 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $144.29 | 3 |
| Abbott Laboratories | $117.00 | 1 |
| Lilly USA, LLC | $36.92 | 2 |
| Exact Sciences Corporation | $22.00 | 1 |
What the 2025 payments were for
- Food and Beverage$320.21 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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