Thomas M. Wallace, M.D.
NPI 1679641666ActiveIndividual· Internal Medicine, Critical Care Medicine· Modesto, CA
Internal Medicine, Critical Care Medicine (M.D.) in Modesto, California, trained at University of Southern California Keck School of Medicine (class of 1979). In 2024 Medicare paid $453,232 for 1,657 patients, and Part D covered 511 of their prescriptions, 83% of them generic. Astellas Pharma US Inc was the largest of 2 companies reporting payments in 2025, $68.22 in all, mostly food and beverage.
Overview
| NPI | 1679641666 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 30, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | G42269 | 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 | 1,657 |
|---|---|
| Services billed | 5,155 across 22 procedure codes |
| Paid by Medicare | $453,232 |
Part D prescriptions in 2024
| Prescriptions (claims) | 511 · 565 30-day fills |
|---|---|
| Patients | 226 |
| Total drug cost | $44,772 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Internal Medicine |
Medical group
- Hospitalists of Modesto Medical Group IncModesto, CA · 85 clinicians
Hospital affiliations
- Doctors Hospital of MantecaManteca, CA
- Doctors Medical CenterModesto, CA
- Emanuel Medical CenterTurlock, CA
Industry payments (Open Payments)
- 2025$68.22 · 3 payments from 2 companies
- 2024$19.85 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $44.21 | 2 |
| Boston Scientific Corporation | $24.01 | 1 |
What the 2025 payments were for
- Food and Beverage$68.22 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 critical care physicians in Modesto · All critical care physicians in California