Jason Alexander Dundulis, M.D.
NPI 1548421183ActiveIndividual· Internal Medicine, Gastroenterology· Jefferson City, MO
Internal Medicine, Gastroenterology (M.D.) with The Curators of the University of Missouri and 1 other group, practicing in Jefferson City, Missouri. Their prescriptions cost Medicare Part D more than their services did: $433,836 for 1,499 claims, against $82,778 paid for services in 2024. Janssen Biotech, Inc. was the largest of 12 companies reporting payments in 2025, $949.49 in all, mostly food and beverage. Lists University of Missouri Health Care as a hospital affiliation.
Overview
| NPI | 1548421183 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 17, 2008 |
| Last updated in NPPES | Jul 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 2011012167 | MO |
| Internal Medicine | 207R00000X | 2011012167 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 501 |
|---|---|
| Services billed | 1,127 across 54 procedure codes |
| Paid by Medicare | $82,778 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,499 · 2,416 30-day fills |
|---|---|
| Patients | 502 |
| Total drug cost | $433,836 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- The Curators of the University of MissouriColumbia, MO · 1,131 clinicians
- Jefferson City Medical Group PCJefferson City, MO · 119 clinicians
Hospital affiliation
- University of Missouri Health CareColumbia, MO
Industry payments (Open Payments)
- 2025$949.49 · 47 payments from 12 companies
- 2024$1,023 · 71 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $314.72 | 14 |
| Abbvie Inc. | $194.09 | 14 |
| Phathom Pharmaceuticals, Inc. | $110.05 | 3 |
| Pfizer Inc. | $88.63 | 4 |
| Gilead Sciences, Inc. | $67.25 | 3 |
What the 2025 payments were for
- Food and Beverage$865.49 · 46 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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