Ari Katerelos, M.D.
Radiation Oncology Physician · Tamuning, GU
Ari Katerelos, M.D. is a radiation oncology physician with a practice address in Tamuning, Guam, and NPI 1861607418, issued on May 14, 2007. Check the license (Guam M-1914, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ari Katerelos
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- M-1914 GU
A99003 CA
Self-reported in NPPES; status is on the state search - Practice location
- 633 Gov Carlos Camacho RD Ste B-1, Tamuning, GU 96913
- Phone
- (671) 646-3363
- Enumerated
- May 14, 2007
- Record last updated
- Mar 4, 2026
- Fax
- (671) 646-4873
- Medicare enrollment
- Enrolled (PECOS I20230201002560); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2005
- Entity
- Type 1 · individual
Verify Ari Katerelos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M-1914Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 88.1 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: $525.00
1 payment: consulting fee; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Proton Doctors Professional CorporationSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Radiation Oncology Physician providers in Guam
There are 1 radiation oncology physician records in Guam.
All 1 in Guam → Every provider in Tamuning → Radiation Oncology Physician nationwide →
Common questions
What is Ari Katerelos, M.D.'s NPI number?
Ari Katerelos, M.D.'s National Provider Identifier (NPI) is 1861607418, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ari Katerelos, M.D. located?
The NPPES record lists a practice address at 633 Gov Carlos Camacho RD Ste B-1, Tamuning, GU, 96913. Phone: (671) 646-3363. Providers update this record themselves, so call before visiting.
How can I verify Ari Katerelos, M.D.'s license?
NPPES lists Guam license number M-1914, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
What is Ari Katerelos, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.1 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.