Michael Dathan Chesnut, M.D.
Internal Medicine Physician · Prospect, KY
Michael Dathan Chesnut, M.D. is an internal medicine physician with a practice address in Prospect, Kentucky, and NPI 1821127333, issued on Mar 2, 2007. Check the license (Kentucky 40644, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Michael Dathan Chesnut
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40644 KY
Self-reported in NPPES; status is on the state search - Practice location
- 9517 US Highway 42, Prospect, KY 40059
- Phone
- (502) 767-1248
- Enumerated
- Mar 2, 2007
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (502) 587-3884
- Medicare enrollment
- Enrolled (PECOS I20071101000655); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,526 in Kentucky → Look up another NPI →
Also registered at 9517 US Highway 42
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Bosler, MDInternal Medicine Physician1932173887
- Gregory Ciliberti, MDInternal Medicine Physician1285657585
- Jeffrey Omer, MDInternal Medicine Physician1821062605
Verify Michael Dathan Chesnut in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 40644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,764 Medicare Part D claims for 335 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. 392 claims were for opioids.
Most prescribed
- Atorvastatin Calcium254 claims
- Amlodipine Besylate236 claims
- Levothyroxine Sodium183 claims
- Losartan Potassium173 claims
- Rosuvastatin Calcium168 claims
- Oxycodone-Acetaminophen153 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: $1,131.34
64 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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
- Greater Louisville Internal Medicine PscProspect, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Dathan Chesnut among 1,526 internal medicine physician records in Kentucky
Michael Dathan Chesnut, 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 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 44% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2004 · median 2006 among the 1,025 with a school on file
- Record last updated2021 · 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).
17 internal medicine physician records list a practice address in Prospect
They are 17 of the 227 NPPES records with a practice address in Prospect, and 1,526 internal medicine physician records in Kentucky.
All 1,526 in Kentucky → Every provider in Prospect → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Padmapriya Balakrishna, M.D.Prospect, KY 400591295709251
- Elizabeth Bates, M.D.Prospect, KY 400591932164134
- James Bosler, MDProspect, KY 400591932173887
- Gregory Ciliberti, MDProspect, KY 400591285657585
- Salvatore Ciliberti, M.D.Prospect, KY 400591770506073
- Reem Hamad, MDProspect, KY 400591215933080
- Diana Han, MDProspect, KY 400591528237161
- Jeffrey Omer, MDProspect, KY 400591821062605
Common questions
What is Michael Dathan Chesnut, M.D.'s NPI number?
Michael Dathan Chesnut, M.D.'s National Provider Identifier (NPI) is 1821127333, issued on Mar 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Dathan Chesnut, M.D. located?
The NPPES record lists a practice address at 9517 US Highway 42, Prospect, KY, 40059. Phone: (502) 767-1248. Providers update this record themselves, so call before visiting.
How can I verify Michael Dathan Chesnut, M.D.'s license?
NPPES lists Kentucky license number 40644, 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 Michael Dathan Chesnut, M.D. prescribe under Medicare Part D?
In 2024, Michael Dathan Chesnut, M.D. had 6,764 Medicare Part D claims for 335 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.