Alexander Kristian Diaz, MD, PHD
Radiation Oncology Physician · Paducah, KY
Alexander Kristian Diaz, MD, PHD is a radiation oncology physician with a practice address in Paducah, Kentucky, and NPI 1962908889, issued on Mar 30, 2018. Check the license (Kentucky 58282, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Alexander Kristian Diaz
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 58282 KY
Self-reported in NPPES; status is on the state search - Practice location
- 285 Medical Center Dr, Paducah, KY 42003
- Phone
- (270) 441-4343
- Enumerated
- Mar 30, 2018
- Record last updated
- Mar 3, 2026
- Medicare enrollment
- Enrolled (PECOS I20230818002704); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 88 in Kentucky → Look up another NPI →
Also registered at 285 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Baker, APRNAdult Health Clinical Nurse Specialist1932532934
- Mark Brannon, P.A.-CPhysician Assistant1194839985
- Wederson Claudino, MDMedical Oncology Physician1588977391
- Kelly Derington, APRNFamily Nurse Practitioner1083847404
- William Skinner, M.D.Medical Oncology Physician1376657254
Verify Alexander Kristian Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 58282Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average radiation oncology physician in 2024
212 Medicare Part D claims for 68 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Oxycodone Hcl36 claims
- Tamsulosin Hcl33 claims
- Dexamethasone17 claims
- Lidocaine Hcl Viscous15 claims
- Sucralfate15 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): 76.8 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).
Industry payments in 2024: $562.10
28 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Murray-Calloway County Public Hospital CorporationMurray, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Kristian Diaz among 88 radiation oncology physician records in Kentucky
Alexander Kristian Diaz, MD, PHD is one of 88 radiation oncology physician records with a practice address in Kentucky. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 88% of them.
- NPI issued2018 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2018 · median 2004 among the 68 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Kentucky
There are 88 radiation oncology physician records in Kentucky.
All 88 in Kentucky → Every provider in Paducah → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Barry Driver, M.D.Paducah, KY 420031578566055
- Peter Locken, M.D.Paducah, KY 420031396837159
- Evans AmoahBowling Green, KY 421011043772445
- Richard McGahan, MDBowling Green, KY 421041134181993
- William Tyree, M.D.Glasgow, KY 421411205835683
- Michael Murray, M.D.Hopkinsville, KY 422401689670085
- Ryan Abel, MDOwensboro, KY 423031437385770
- Patrick Newbury, MDOwensboro, KY 423031205490281
Common questions
What is Alexander Kristian Diaz, MD, PHD's NPI number?
Alexander Kristian Diaz, MD, PHD's National Provider Identifier (NPI) is 1962908889, issued on Mar 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Kristian Diaz, MD, PHD located?
The NPPES record lists a practice address at 285 Medical Center Dr, Paducah, KY, 42003. Phone: (270) 441-4343. Providers update this record themselves, so call before visiting.
How can I verify Alexander Kristian Diaz, MD, PHD's license?
NPPES lists Kentucky license number 58282, 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 Alexander Kristian Diaz, MD, PHD prescribe under Medicare Part D?
In 2024, Alexander Kristian Diaz, MD, PHD had 212 Medicare Part D claims for 68 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Alexander Kristian Diaz, MD, PHD's MIPS final score?
The 2023 MIPS final score is 76.8 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.