Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Alexander Kristian Diaz, MD, PHD

Individual provider Radiation Oncology Physician · NPI 1962908889

Dr. Alexander Kristian Diaz, MD, PHD practises Radiation Oncology in Paducah, Kentucky. Graduated from University of Tennessee, Hsc, College of Medicine in 2018, 8 years ago. Practices with Mercy Health Physicians Kentucky Specialty Care LLC, a 147-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Kentucky.

Years since qualifying
8
Trained at
University of Tennessee, Hsc, College of Medicine
Licensed in
KY
In the registry since
2018
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

285 Medical Center Dr
Paducah, KY 42003-7912
Phone: (270) 441-4343
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 803 Poplar St, Murray, KY 42071-2432 — (270) 762-1902

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 58282 (KY)

Record details

NPI number1962908889
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 30, 2018
Last updated in NPPESMarch 3, 2026
Certification dateMarch 3, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF TENNESSEE, HSC, COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Mercy Health Physicians Kentucky Specialty Care Llc — 147 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Colleagues at Mercy Health Physicians Kentucky Specialty Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 147 clinicians in the practice; 12 are shown here.

Other providers in Paducah