Thomas Jan Konturek, M.D.
NPI 1942651096ActiveIndividual· Internal Medicine, Gastroenterology· Anaheim, CA
Internal Medicine, Gastroenterology (M.D.) with Oc Gastrocare, practicing in Anaheim, California. Medicare paid $63,340 for services to 263 patients in 2024. Genzyme Corporation was the largest of 7 companies reporting payments in 2025, $202.92 in all, mostly food and beverage. Lists Uci Health-Orange as a hospital affiliation.
Overview
| NPI | 1942651096 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 29, 2016 |
| Last updated in NPPES | Jul 22, 2026 |
| Certified by provider | Jul 22, 2026 |
| Reactivated | Oct 27, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A161554 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 263 |
|---|---|
| Services billed | 661 across 26 procedure codes |
| Paid by Medicare | $63,340 |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Oc GastrocareAnaheim, CA · 11 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$202.92 · 8 payments from 7 companies
- 2024$159.00 · 7 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $53.51 | 2 |
| Boston Scientific Corporation | $38.64 | 1 |
| Janssen Biotech, Inc. | $33.40 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $22.17 | 1 |
| Pfizer Inc. | $22.07 | 1 |
What the 2025 payments were for
- Food and Beverage$202.92 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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