Marc W. Gerdisch, MD
NPI 1508822255ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Indianapolis, IN
Thoracic Surgery (Cardiothoracic Vascular Surgery) (MD) in Indianapolis, Indiana, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1987). Mostly services rather than prescriptions: Medicare paid $171,750 for 151 patients in 2024, with only 48 Part D claims. Arthrex, Inc. was the largest of 18 companies reporting payments in 2025, $424,758 in all, mostly consulting fees.
Overview
| NPI | 1508822255 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 21, 2006 |
| Last updated in NPPES | Apr 2, 2026 |
| Certified by provider | Apr 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | 01048049A | IN |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 036079121 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (IA); Practitioner - Cardiac Surgery (IL); Practitioner - Thoracic Surgery (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 151 |
|---|---|
| Services billed | 345 across 53 procedure codes |
| Paid by Medicare | $171,750 |
Part D prescriptions in 2024
| Prescriptions (claims) | 48 · 79 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $7,780 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Thoracic Surgery |
Medical group
- Iu Health Medical Group LLCIndianapolis, IN · 4,462 clinicians
Hospital affiliations
- Franciscan Health IndianapolisIndianapolis, IN
- Indiana University HealthIndianapolis, IN
Industry payments (Open Payments)
- 2025$424,758 · 201 payments from 18 companies
- 2024$292,732 · 178 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Arthrex, Inc. | $254,725 | 88 |
| Atricure, Inc. | $107,027 | 64 |
| Clearflow Inc. | $31,500 | 9 |
| Artivion, Inc. | $30,463 | 10 |
| Edwards Lifesciences Corporation | $238.07 | 2 |
What the 2025 payments were for
- Consulting Fee$346,051 · 50 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$54,435 · 3 payments
- Travel and Lodging$19,526 · 68 payments
- Food and Beverage$4,746 · 80 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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