Michael D. Andya, M.D.
NPI 1760428452ActiveIndividual· Internal Medicine· Grass Valley, CA
Internal Medicine (M.D.) in Grass Valley, California, trained at University of California, Irvine, California College of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $447,021 for 6,048 claims, against $276,459 paid for services in 2024. Pfizer Inc. reported $14.07 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1760428452 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 21, 2006 |
| Last updated in NPPES | May 28, 2026 |
| Certified by provider | May 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G69223 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 472 |
|---|---|
| Services billed | 3,595 across 33 procedure codes |
| Paid by Medicare | $276,459 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,048 · 13,237 30-day fills |
|---|---|
| Patients | 439 |
| Total drug cost | $447,021 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Oroville HospitalOroville, CA
- Sierra Nevada Memorial HospitalGrass Valley, CA
- Sutter Auburn Faith HospitalAuburn, CA
Other facilities
- Advanced Home Health, IncHome health agency · Roseville, CA
- Adventist Health Home Care ServicesHome health agency · Yuba City, CA
- Progressive Home Care - AuburnHome health agency · Auburn, CA
- Sutter Auburn Faith Vna & HospiceHome health agency · Auburn, CA
Industry payments (Open Payments)
- 2025$14.07 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $14.07 | 1 |
What the 2025 payments were for
- Food and Beverage$14.07 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 internal medicine physicians in Grass Valley · All internal medicine physicians in California