Thomas Charles Knopp, DO
NPI 1093998239ActiveIndividual· Internal Medicine· Lexington, KY
Internal Medicine (DO) with Colorectal Surgical and Gastroenterology Associates PSC, practicing in Lexington, Kentucky. Their prescriptions cost Medicare Part D more than their services did: $1,188,943 for 2,095 claims, against $173,060 paid for services in 2024. Janssen Biotech, Inc. was the largest of 13 companies reporting payments in 2025, $1,064 in all, mostly food and beverage. Lists Baptist Health Corbin and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1093998239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Dec 11, 2007 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 03084 | KY |
| Internal Medicine, Gastroenterology | 207RG0100X | 03084 | KY |
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 - Emergency Medicine (KY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 347 |
|---|---|
| Services billed | 6,489 across 31 procedure codes |
| Paid by Medicare | $173,060 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,095 · 3,196 30-day fills |
|---|---|
| Patients | 618 |
| Total drug cost | $1,188,943 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Colorectal Surgical and Gastroenterology Associates PSCLexington, KY · 10 clinicians
Hospital affiliations
- Baptist Health CorbinCorbin, KY
- Baptist Health LexingtonLexington, KY
- Saint Joseph EastLexington, KY
Industry payments (Open Payments)
- 2025$1,064 · 58 payments from 13 companies
- 2024$735.78 · 42 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $339.15 | 23 |
| Genzyme Corporation | $142.78 | 9 |
| Gilead Sciences, Inc. | $129.15 | 6 |
| Regeneron Healthcare Solutions, Inc. | $105.36 | 4 |
| Abbvie Inc. | $74.12 | 3 |
What the 2025 payments were for
- Food and Beverage$979.58 · 57 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 322 internal medicine physicians in Lexington · All internal medicine physicians in Kentucky