ISLAND CANCER CENTER CORPORATION
NPI 1891665352
Radiology - Radiation Oncology in Tamuning, GU
About Island Cancer Center Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISLAND CANCER CENTER CORPORATION (NPI 1891665352) is a healthcare organization registered as a radiation oncology in Tamuning, Guam and active in the NPI registry since November 2025. The organization lists Ari Katerelos, Ao, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Island Cancer Center Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Island Cancer Center Corporation, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Island Cancer Center Corporation's NPI number?
The NPI number for Island Cancer Center Corporation is 1891665352. It was assigned to this organization in the NPPES registry on November 10, 2025.
Where is Island Cancer Center Corporation located?
Island Cancer Center Corporation is located at 633 Gov Carlos Camacho Rd Suite#b-1, Tamuning, GU 96913. The listed phone number is (671) 646-3363.
What is Island Cancer Center Corporation's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Island Cancer Center Corporation enrolled in Medicare?
Yes. Island Cancer Center Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Island Cancer Center Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Radiation Oncology) reassigns their Medicare billing to Island Cancer Center Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Island Cancer Center Corporation was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Island Cancer Center Corporation · NPI 1891665352
Radiation Oncology organization in Tamuning, GU. Organization record, active in the CMS NPPES registry since November 10, 2025.
## Identity
- **NPI:** 1891665352 (Entity type: Organization)
- **Enumerated:** November 10, 2025
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **Organization subpart:** No
- **Authorized official:** Ari Katerelos, AO
## Practice location
- **Address:** 633 GOV CARLOS CAMACHO RD, SUITE#B-1, Tamuning, GU 96913
- **Phone:** (671) 646-3363
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Radiation Oncology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891665352) · Data from the CMS NPPES public registry.