Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ari Katerelos, MD

Individual provider Radiation Oncology Physician · NPI 1861607418

Ari Katerelos, MD is a Radiation Oncology in Tamuning, Guam. Graduated from University of California, Geffen School of Medicine in 2005, 21 years ago. Works from 2 locations and accepts Medicare assignment. Licensed in California and Guam.

Years since qualifying
21
Trained at
University of California, Geffen School of Medicine
Licensed in
CA, GU
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

633 Gov Carlos Camacho Rd Ste B-1
Tamuning, GU 96913
Phone: (671) 646-3363
Fax: (671) 646-4873

Additional practice locations (1)

  • 401 E Highland Ave Ste D, San Bernardino, CA 92404-3800 — (909) 475-2700

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence M-1914 (GU)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence A99003 (CA)

Record details

NPI number1861607418
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 14, 2007
Last updated in NPPESMarch 4, 2026
Certification dateMarch 4, 2026
Mailing address633 Gov Carlos Camacho Rd, Suite B1, Tamuning, GU 96913

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Tamuning