Mark Irwin
NPI 1104453588ActiveIndividual· Internal Medicine, Infectious Disease· Knoxville, TN
Internal Medicine, Infectious Disease with Covenant Medical Group Inc, practicing in Knoxville, Tennessee. Part D covered 77 prescriptions written in 2024, 43% of them generic. Lists Fort Loudoun Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1104453588 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 25, 2020 |
| Last updated in NPPES | Jul 21, 2025 |
| Certified by provider | Jul 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 6170 | 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 - Infectious Disease (TN) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 77 · 81 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $147,213 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Infectious Disease |
Medical group
- Covenant Medical Group IncKnoxville, TN · 365 clinicians
Hospital affiliations
- Fort Loudoun Medical CenterLenoir City, TN
- Fort Sanders Regional Medical CenterKnoxville, TN
- Parkwest Medical CenterKnoxville, TN
- Roane Medical CenterHarriman, TN
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 infectious disease specialists in Knoxville · All infectious disease specialists in Tennessee