Warren R. Kemper, M D
NPI 1770595035ActiveIndividual· Internal Medicine· Louisville, KY
Internal Medicine (M D) in Louisville, Kentucky, trained at University of Louisville School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,427,254 for 14,138 claims, against $102,864 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 16 companies reporting payments in 2025, $1,482 in all, mostly food and beverage.
Overview
| NPI | 1770595035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M D |
| Sole proprietor | No |
| NPI issued | Aug 13, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 27171 | 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 - Internal Medicine (KY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 355 |
|---|---|
| Services billed | 2,319 across 61 procedure codes |
| Paid by Medicare | $102,864 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,138 · 33,545 30-day fills |
|---|---|
| Patients | 807 |
| Total drug cost | $1,427,254 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Louisville School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
Medical group
- University of Louisville Physicians IncLouisville, KY · 1,445 clinicians
Hospital affiliations
- Baptist Health LagrangeLa Grange, KY
- Baptist Health LouisvilleLouisville, KY
- Norton Clark HospitalJeffersonville, IN
- Norton Hospitals, IncLouisville, KY
- Uofl Health - Jewish Hospital and Mary & Elizabeth HospitalLouisville, KY
Other facilities
- Amedisys Sp-Ky, LLC DBA Adoration Home HealthHome health agency · Louisville, KY
- CaretendersHome health agency · Louisville, KY
Industry payments (Open Payments)
- 2025$1,482 · 108 payments from 16 companies
- 2024$2,014 · 131 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $331.66 | 32 |
| Amgen Inc. | $205.16 | 16 |
| Pfizer Inc. | $185.77 | 14 |
| Esperion Therapeutics, Inc. | $147.68 | 11 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $145.70 | 11 |
What the 2025 payments were for
- Food and Beverage$1,482 · 108 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Louisville
- 1003834649
- 1003871799
- 1013441179
- 1013972561
- 1023199064
- 1023570025
- 1023578077
- 1033130497
- 1053428714
- 1053727602
- 1053872390
- 1073502316
All 566 internal medicine physicians in Louisville · All internal medicine physicians in Kentucky