Jason L. Huffman, M.D.
NPI 1598838765ActiveIndividual· Internal Medicine, Gastroenterology· Knoxville, TN
Internal Medicine, Gastroenterology (M.D.) in Knoxville, Tennessee, trained at Texas Tech University Health Science Center School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $285,702 for 776 claims, against $110,420 paid for services in 2024. Janssen Biotech, Inc. was the largest of 7 companies reporting payments in 2025, $586.85 in all, mostly food and beverage.
Overview
| NPI | 1598838765 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 16, 2006 |
| Last updated in NPPES | May 5, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 53758 | 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 | 692 |
|---|---|
| Services billed | 1,098 across 59 procedure codes |
| Paid by Medicare | $110,420 |
Part D prescriptions in 2024
| Prescriptions (claims) | 776 · 1,323 30-day fills |
|---|---|
| Patients | 431 |
| Total drug cost | $285,702 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Texas Tech University Health Science Center School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Gastroenterology |
Medical group
- Gastrointestinal Associates PCKnoxville, TN · 33 clinicians
Hospital affiliations
- Fort Sanders Regional Medical CenterKnoxville, TN
- Methodist Medical Center of Oak RidgeOak Ridge, TN
- Morristown Hamblen Hospital AssociationMorristown, TN
- Parkwest Medical CenterKnoxville, TN
- University Health System, IncKnoxville, TN
Industry payments (Open Payments)
- 2025$586.85 · 28 payments from 7 companies
- 2024$285.59 · 15 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $199.34 | 3 |
| Abbvie Inc. | $148.68 | 14 |
| Celltrion USA Inc. | $80.92 | 4 |
| Ardelyx, Inc. | $80.44 | 3 |
| Aimmune Therapeutics, Inc. | $42.06 | 2 |
What the 2025 payments were for
- Food and Beverage$586.85 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 56 gastroenterologists in Knoxville · All gastroenterologists in Tennessee