Thomas Arndt, MD
NPI 1487614210ActiveIndividual· Internal Medicine, Gastroenterology· Oak Lawn, IL
Internal Medicine, Gastroenterology (MD) in Oak Lawn, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $253,093 for 933 claims, against $93,584 paid for services in 2024. Abbvie Inc. was the largest of 3 companies reporting payments in 2024, $47.60 in all, mostly food and beverage.
Overview
| NPI | 1487614210 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 24, 2006 |
| Last updated in NPPES | Dec 29, 2021 |
| Certified by provider | Dec 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036063478 | 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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 421 |
|---|---|
| Services billed | 1,802 across 34 procedure codes |
| Paid by Medicare | $93,584 |
Part D prescriptions in 2024
| Prescriptions (claims) | 933 · 1,907 30-day fills |
|---|---|
| Patients | 279 |
| Total drug cost | $253,093 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Osf Multi-Specialty GroupMorton, IL · 2,114 clinicians
Hospital affiliation
- Osf Little Company of Mary Medical CenterEvergreen Park, IL
Industry payments (Open Payments)
- 2024$47.60 · 3 payments from 3 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $18.14 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $16.05 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $13.41 | 1 |
What the 2024 payments were for
- Food and Beverage$47.60 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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