Warren R. Kemper, M D
Internal Medicine Physician · Louisville, KY
Warren R. Kemper, M D is an internal medicine physician with a practice address in Louisville, Kentucky, and NPI 1770595035, issued on Aug 13, 2006. Check the license (Kentucky 27171, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Warren R. Kemper
- Credential
- M D
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 27171 KY
Self-reported in NPPES; status is on the state search - Practice location
- 4500 Churchman Ave, Louisville, KY 40215
- Phone
- (502) 361-1389
- Enumerated
- Aug 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (502) 368-1221
- Medicare enrollment
- Enrolled (PECOS I20120210000474); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,526 in Kentucky → Look up another NPI →
Also registered at 4500 Churchman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Jones, MDRadiation Oncology Physician1851386767
- Bonnie Warner, APRNFamily Nurse Practitioner1013200534
Verify Warren R. Kemper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 27171Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average internal medicine physician in 2024
14,138 Medicare Part D claims for 807 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 528 claims were for opioids.
Most prescribed
- Atorvastatin Calcium707 claims
- Amlodipine Besylate625 claims
- Lisinopril580 claims
- Ezetimibe543 claims
- Levothyroxine Sodium520 claims
- Metoprolol Succinate454 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,014.29
107 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University OF Louisville Physicians IncLouisville, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Warren R. Kemper among 1,526 internal medicine physician records in Kentucky
Warren R. Kemper, M D is one of 1,526 internal medicine physician records with a practice address in Kentucky. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1991 · median 2006 among the 1,025 with a school on file
- Record last updated2007 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
457 internal medicine physician records list a practice address in Louisville
They are 457 of the 21,891 NPPES records with a practice address in Louisville, and 1,526 internal medicine physician records in Kentucky.
All 1,526 in Kentucky → Every provider in Louisville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Voltaire Briones, M.D.Louisville, KY 402151952341588
- Valerie Briones-Pryor, M.D.Louisville, KY 402151437102340
- James Dienes, M.D.Louisville, KY 402151689611600
- James Fitzpatrick, M.D.Louisville, KY 402151710924725
- Ravi Gill, MDLouisville, KY 402151285633586
- Akasha Haq, MDLouisville, KY 402151730252453
- Ann Lombardi, M.D.Louisville, KY 402151124072657
- Warren Milteer, M.D.Louisville, KY 402151023160983
Common questions
What is Warren R. Kemper, M D's NPI number?
Warren R. Kemper, M D's National Provider Identifier (NPI) is 1770595035, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren R. Kemper, M D located?
The NPPES record lists a practice address at 4500 Churchman Ave, Louisville, KY, 40215. Phone: (502) 361-1389. Providers update this record themselves, so call before visiting.
How can I verify Warren R. Kemper, M D's license?
NPPES lists Kentucky license number 27171, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Warren R. Kemper, M D prescribe under Medicare Part D?
In 2024, Warren R. Kemper, M D had 14,138 Medicare Part D claims for 807 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.