Clayton Michael Smith, M.D.
Internal Medicine Physician · Louisville, KY
Clayton Michael Smith, M.D. is an internal medicine physician with a practice address in Louisville, Kentucky, and NPI 1235371840, issued on Mar 27, 2009. Check the license (Kentucky 45420, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Clayton Michael Smith
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 45420 KY
Self-reported in NPPES; status is on the state search - Practice location
- 401 E Chestnut St, Louisville, KY 40202
- Phone
- (502) 813-6500
- Enumerated
- Mar 27, 2009
- Record last updated
- Jul 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (502) 589-5093
- Medicaid IDs
- 7100140140 KY
201178490 IN - Medicare enrollment
- Enrolled (PECOS I20100920000635); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,526 in Kentucky → Look up another NPI →
Also registered at 401 E Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicolas Ajkay, M.D.Surgical Oncology Physician1497928261
- Murad Al-Momani, PH.D.Audiologist1346478971
- Yaser Al-Salmay, MDTransplant Surgery Physician1609251271
- Souzana Alkhouri, M.D.Psychiatry Physician1184088163
- Wasan Amornsang, DDSProsthodontics1902352784
- Brianna Arbogast, RNGeneral Practice Registered Nurse1821977950
Verify Clayton Michael Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 45420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average internal medicine physician in 2024
4,862 Medicare Part D claims for 357 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 247 claims were for opioids.
Most prescribed
- Atorvastatin Calcium371 claims
- Warfarin Sodium221 claims
- Lisinopril163 claims
- Amlodipine Besylate152 claims
- Hydrocodone-Acetaminophen140 claims
- Carvedilol130 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- PT Pros, IncLeitchfield, KY
- 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).
Clayton Michael Smith among 1,526 internal medicine physician records in Kentucky
Clayton Michael Smith, 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2009 · median 2006 among the 1,025 with a school on file
- Record last updated2014 · 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
- David Britt, M.D.Louisville, KY 402021265424824
- Keith Carter, M.D.Louisville, KY 402021134111792
- Barbara Casper, MDLouisville, KY 402021124013776
- Jason Chesney, MDLouisville, KY 402021407837917
- Matthew Fargen, MDLouisville, KY 402021376534719
- Haeshik Gorr, MDLouisville, KY 402021821083478
- Jennifer Koch, MDLouisville, KY 402021134114788
- Rick Lawson, M.D.Louisville, KY 402021689676504
Common questions
What is Clayton Michael Smith, M.D.'s NPI number?
Clayton Michael Smith, M.D.'s National Provider Identifier (NPI) is 1235371840, issued on Mar 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Clayton Michael Smith, M.D. located?
The NPPES record lists a practice address at 401 E Chestnut St, Louisville, KY, 40202. Phone: (502) 813-6500. Providers update this record themselves, so call before visiting.
How can I verify Clayton Michael Smith, M.D.'s license?
NPPES lists Kentucky license number 45420, 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 Clayton Michael Smith, M.D. prescribe under Medicare Part D?
In 2024, Clayton Michael Smith, M.D. had 4,862 Medicare Part D claims for 357 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Clayton Michael Smith, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.