Zachary Earl Armstrong, M.D.
Emergency Medicine Physician · Louisville, KY
Zachary Earl Armstrong, M.D. is an emergency medicine physician with a practice address in Louisville, Kentucky, and NPI 1699917625, issued on Apr 6, 2009. Check the license (Kentucky 45498, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Zachary Earl Armstrong
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 45498 KY
ME155694 FL
Self-reported in NPPES; status is on the state search - Practice location
- 200 Abraham Flexner Way, Louisville, KY 40202
- Phone
- (502) 852-5689
- Enumerated
- Apr 6, 2009
- Record last updated
- Jun 22, 2023
- Medicaid ID
- 7100144990 KY
- Entity
- Type 1 · individual
Also registered at 200 Abraham Flexner Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kayla Abner, RNRegistered Nurse1134806664
- Douglas Ackermann, MDAnatomic Pathology & Clinical Pathology Physician1265454474
- Dominic Aiello, MDEmergency Medicine Physician1215687322
- Kamran Akhtar, MDInfectious Disease Physician1669486346
- Robert Allen, MDAnesthesiology Physician1851388763
- Kwadwo Amankwa, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1104324243
Verify Zachary Earl Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 45498Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average emergency medicine physician in 2024
270 Medicare Part D claims for 163 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Ondansetron Odt56 claims
- Diclofenac Sodium50 claims
- Hydrocodone-Acetaminophen17 claims
- Prednisone16 claims
- Cephalexin15 claims
- Dicyclomine Hcl11 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): 89.6 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).
Emergency Medicine Physician providers in Kentucky
There are 903 emergency medicine physician records in Kentucky.
Other emergency medicine physician records in Kentucky
- Atam Abbi, MDLebanon, KY1215099593
- Joshua Abell, MDEdgewood, KY1578983508
- Paul Adams, MDLouisville, KY1235186529
- Robert Adams, MBBSMadisonville, KY1922760073
- Brian Adkins, M.D.Lexington, KY1598710717
- Jessica Adkins, MDLexington, KY1639708712
- Amal Agarwal, D.O.Lexington, KY1932259827
- Muhammad Ahmed, MDLexington, KY1912053042
- Dominic Aiello, MDLouisville, KY1215687322
- Kenneth Ajabor, M.D.West Liberty, KY1023292562
Common questions
What is Zachary Earl Armstrong, M.D.'s NPI number?
Zachary Earl Armstrong, M.D.'s National Provider Identifier (NPI) is 1699917625, issued on Apr 6, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Earl Armstrong, M.D. located?
The NPPES record lists a practice address at 200 Abraham Flexner Way, Louisville, KY, 40202. Phone: (502) 852-5689. Providers update this record themselves, so call before visiting.
How can I verify Zachary Earl Armstrong, M.D.'s license?
NPPES lists Kentucky license number 45498, 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 Zachary Earl Armstrong, M.D. prescribe under Medicare Part D?
In 2024, Zachary Earl Armstrong, M.D. had 270 Medicare Part D claims for 163 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Zachary Earl Armstrong, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.6 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.