Thomas R. Vanderheyden Jr., D.O.
NPI 1528222387ActiveIndividual· Internal Medicine· South Bend, IN
Internal Medicine (D.O.) in South Bend, Indiana, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $2,239,749 for 2,397 claims, against $118,359 paid for services in 2024. Abbvie Inc. was the largest of 14 companies reporting payments in 2025, $1,652 in all, mostly food and beverage.
Overview
| NPI | 1528222387 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jul 10, 2008 |
| Last updated in NPPES | Aug 28, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 02004009A | IN |
| Internal Medicine | 207R00000X | 125-050866 | IL |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 669 |
|---|---|
| Services billed | 1,020 across 56 procedure codes |
| Paid by Medicare | $118,359 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,397 · 4,021 30-day fills |
|---|---|
| Patients | 985 |
| Total drug cost | $2,239,749 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Gastroenterology |
Medical group
- Michiana Gastroenterology, IncSouth Bend, IN · 12 clinicians
Hospital affiliations
- Community Hospital of Bremen IncBremen, IN
- Elkhart General HospitalElkhart, IN
- Memorial Hospital of South BendSouth Bend, IN
- Saint Joseph Regional Medical CenterMishawaka, IN
- Saint Joseph Regional Medical Center - PlymouthPlymouth, IN
Industry payments (Open Payments)
- 2025$1,652 · 109 payments from 14 companies
- 2024$1,831 · 116 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $514.01 | 41 |
| Takeda Pharmaceuticals U.S.A., Inc. | $349.46 | 18 |
| Janssen Biotech, Inc. | $275.85 | 21 |
| Gilead Sciences, Inc. | $177.89 | 11 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $114.86 | 5 |
What the 2025 payments were for
- Food and Beverage$1,652 · 109 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in South Bend
- 1003806829
- 1144888017
- 1154378602
- 1205064870
- 1245381029
- 1255967352
- 1295725646
- 1306057724
- 1346772894
- 1376586420
- 1407506744
- 1538508429
All 62 internal medicine physicians in South Bend · All internal medicine physicians in Indiana