Michael Jude Sullivan, M.D.
NPI 1326023078ActiveIndividual· Internal Medicine, Gastroenterology· Kingsport, TN
Internal Medicine, Gastroenterology (M.D.) in Kingsport, Tennessee, trained at Icahn School of Medicine at Mount Sinai (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $214,237 for 1,393 claims, against $35,506 paid for services in 2024. Salix Pharmaceuticals, A Division of Bausch Health US, LLC was the largest of 7 companies reporting payments in 2025, $811.37 in all, mostly food and beverage.
Overview
| NPI | 1326023078 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Nov 28, 2023 |
| Certified by provider | Nov 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 15419 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 230 |
|---|---|
| Services billed | 386 across 16 procedure codes |
| Paid by Medicare | $35,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,393 · 2,852 30-day fills |
|---|---|
| Patients | 541 |
| Total drug cost | $214,237 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Gastroenterology |
Medical group
- Sullivan and PtrsKingsport, TN · 5 clinicians
Industry payments (Open Payments)
- 2025$811.37 · 50 payments from 7 companies
- 2024$765.97 · 49 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $469.02 | 31 |
| Aimmune Therapeutics, Inc. | $166.73 | 11 |
| Daiichi Sankyo Inc. | $59.27 | 3 |
| Gilead Sciences, Inc. | $45.82 | 2 |
| Madrigal Pharmaceuticals | $37.24 | 1 |
What the 2025 payments were for
- Food and Beverage$811.37 · 50 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Kingsport
- 1023338456
- 1043213101
- 1073508560
- 1134166291
- 1316388556
- 1437134723
- 1487774410
- 1588630891
- 1720241318
- 1740366459
- 1750382982
- 1629063813
All 22 gastroenterologists in Kingsport · All gastroenterologists in Tennessee