Michael Andrew Tzagournis, MD
NPI 1639121106ActiveIndividual· Internal Medicine, Gastroenterology· Columbus, OH
Internal Medicine, Gastroenterology (MD) with Mount Carmel Healthproviders Two LLC and 1 other group, practicing in Columbus, Ohio. Their prescriptions cost Medicare Part D more than their services did: $102,029 for 615 claims, against $61,577 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $2,378 in all, mostly food and beverage. Lists Grant Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1639121106 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 16, 2006 |
| Last updated in NPPES | Jun 12, 2025 |
| Certified by provider | Jun 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 35077326 | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 299 |
|---|---|
| Services billed | 882 across 45 procedure codes |
| Paid by Medicare | $61,577 |
Part D prescriptions in 2024
| Prescriptions (claims) | 615 · 1,037 30-day fills |
|---|---|
| Patients | 318 |
| Total drug cost | $102,029 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- Mount Carmel Healthproviders Two LLCDublin, OH · 225 clinicians
- Digestive Associates of OhioColumbus, OH · 5 clinicians
Hospital affiliations
- Grant Medical CenterColumbus, OH
- Mount Carmel DublinDublin, OH
- Mount Carmel East & WestColumbus, OH
- Riverside Methodist HospitalColumbus, OH
Industry payments (Open Payments)
- 2025$2,378 · 133 payments from 15 companies
- 2024$2,894 · 156 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $870.92 | 53 |
| Takeda Pharmaceuticals U.S.A., Inc. | $383.32 | 22 |
| Genzyme Corporation | $274.11 | 12 |
| Janssen Biotech, Inc. | $182.24 | 13 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $177.33 | 9 |
What the 2025 payments were for
- Food and Beverage$2,378 · 133 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 107 gastroenterologists in Columbus · All gastroenterologists in Ohio