Gardar Gislason, MD
NPI 1922038157ActiveIndividual· Internal Medicine, Gastroenterology· Newburgh, IN
Internal Medicine, Gastroenterology (MD) with Digestive Care of Evansville PC, practicing in Newburgh, Indiana. Their prescriptions cost Medicare Part D more than their services did: $874,989 for 974 claims, against $301,361 paid for services in 2024. Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $1,589 in all, mostly food and beverage. Lists Ascension St Vincent Evansville and 1 other hospital as hospital affiliations.
Overview
| NPI | 1922038157 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 4, 2006 |
| Last updated in NPPES | Nov 10, 2021 |
| Certified by provider | Oct 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 01048640 | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 673 |
|---|---|
| Services billed | 9,308 across 62 procedure codes |
| Paid by Medicare | $301,361 |
Part D prescriptions in 2024
| Prescriptions (claims) | 974 · 1,408 30-day fills |
|---|---|
| Patients | 517 |
| Total drug cost | $874,989 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Digestive Care of Evansville PCNewburgh, IN · 27 clinicians
Hospital affiliations
- Ascension St Vincent EvansvilleEvansville, IN
- Deaconess Hospital IncEvansville, IN
Industry payments (Open Payments)
- 2025$1,589 · 64 payments from 19 companies
- 2024$1,263 · 53 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $556.72 | 23 |
| Madrigal Pharmaceuticals | $160.57 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $145.48 | 6 |
| Janssen Biotech, Inc. | $90.15 | 2 |
| Ardelyx, Inc. | $77.65 | 3 |
What the 2025 payments were for
- Food and Beverage$1,589 · 64 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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