John Mayo
Emergency Medicine Physician · Lexington, KY
John Mayo is an emergency medicine physician with a practice address in Lexington, Kentucky, and NPI 1558723049, issued on Mar 23, 2016. Check the license (Kentucky R4134, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- John Mayo
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- R4134 KY
Self-reported in NPPES; status is on the state search - Practice location
- University OF Kentucky 800 Rose St, Lexington, KY 40536
- Phone
- (859) 323-6762
- Enumerated
- Mar 23, 2016
- Record last updated
- Jul 5, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181107002589); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at University OF Kentucky 800 Rose St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- James GiltzRadiation Oncology Physician1497103980
- Kazuhiko KidoStudent in an Organized Health Care Education/Training Program1205270741
Verify John Mayo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license R4134Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average emergency medicine physician in 2024
748 Medicare Part D claims for 419 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 70 claims were for opioids.
Most prescribed
- Ondansetron Odt92 claims
- Methylprednisolone81 claims
- Hydrocodone-Acetaminophen66 claims
- Cefdinir52 claims
- Doxycycline Hyclate52 claims
- Amoxicillin-Clavulanate Potass28 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- West Fairview Emergency Physicians LLCAshland, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
211 emergency medicine physician records list a practice address in Lexington
They are 211 of the 14,031 NPPES records with a practice address in Lexington, and 903 emergency medicine physician records in Kentucky.
All 211 in Lexington → All 903 in Kentucky → Every provider in Lexington →
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 John Mayo's NPI number?
John Mayo's National Provider Identifier (NPI) is 1558723049, issued on Mar 23, 2016. An NPI identifies a provider in billing; it is not a license.
Where is John Mayo located?
The NPPES record lists a practice address at University OF Kentucky 800 Rose St, Lexington, KY, 40536. Phone: (859) 323-6762. Providers update this record themselves, so call before visiting.
How can I verify John Mayo's license?
NPPES lists Kentucky license number R4134, 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 John Mayo prescribe under Medicare Part D?
In 2024, John Mayo had 748 Medicare Part D claims for 419 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is John Mayo's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.