Karl L. Krohn, M.D.
NPI 1194798686ActiveIndividual· Internal Medicine· Lufkin, TX
Internal Medicine (M.D.) in Lufkin, Texas, trained at Southern Methodist University Medical Department (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $546,966 for 5,107 claims, against $38,217 paid for services in 2024. Inspire Medical Systems, Inc. was the largest of 4 companies reporting payments in 2025, $131.08 in all, mostly food and beverage.
Overview
| NPI | 1194798686 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 7, 2006 |
| Last updated in NPPES | Jul 5, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | H8185 | TX |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 269 |
|---|---|
| Services billed | 856 across 28 procedure codes |
| Paid by Medicare | $38,217 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,107 · 10,807 30-day fills |
|---|---|
| Patients | 232 |
| Total drug cost | $546,966 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Southern Methodist University Medical Department |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Chi St Lukes Health Memorial LufkinLufkin, TX
- Tyler County HospitalWoodville, TX
- Woodland Heights Medical CenterLufkin, TX
Other facilities
- Hospice in the PinesHospice · Lufkin, TX
Industry payments (Open Payments)
- 2025$131.08 · 5 payments from 4 companies
- 2024$354.99 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Inspire Medical Systems, Inc. | $57.89 | 1 |
| Exact Sciences Corporation | $32.84 | 2 |
| Glaxosmithkline, LLC. | $24.32 | 1 |
| Globus Medical, Inc. | $16.03 | 1 |
What the 2025 payments were for
- Food and Beverage$131.08 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 internal medicine physicians in Lufkin · All internal medicine physicians in Texas