WESTLAKE RADIATION ONCOLOGY MEDICAL CENTER, INC.
NPI 1083644165
Radiology - Radiation Oncology in Westlake Village, CA
About Westlake Radiation Oncology Medical Center, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WESTLAKE RADIATION ONCOLOGY MEDICAL CENTER, INC. (NPI 1083644165) is a healthcare organization registered as a radiation oncology in Westlake Village, California and active in the NPI registry since July 2006. The organization lists Jonathan R Stella, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
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)
Westlake Radiation Oncology Medical Center, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
15Medicare enrollment records show 15 clinicians reassign Medicare billing to Westlake Radiation Oncology Medical Center, Inc., which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (15)
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 Coastal Radiation Oncology Medical Group, Inc.'s NPI number?
The NPI number for Coastal Radiation Oncology Medical Group, Inc. is 1083644165. It was assigned to this organization in the NPPES registry on July 4, 2006. The provider is doing business as Westlake Radiation Oncology Medical Center, Inc..
Where is Coastal Radiation Oncology Medical Group, Inc. located?
Coastal Radiation Oncology Medical Group, Inc. is located at 1240 S Westlake Blvd Suite 103, Westlake Village, CA 91361. The listed phone number is (805) 494-4483.
What is Coastal Radiation Oncology Medical Group, Inc.'s specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Coastal Radiation Oncology Medical Group, Inc. enrolled in Medicare?
Yes. Coastal Radiation Oncology Medical Group, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Coastal Radiation Oncology Medical Group, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 15 clinicians, all in Radiation Oncology, reassign their Medicare billing to Coastal Radiation Oncology Medical Group, Inc.. 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. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Coastal Radiation Oncology Medical Group, Inc. was last updated on January 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.
# Westlake Radiation Oncology Medical Center, Inc. · NPI 1083644165
Radiation Oncology organization in Westlake Village, California. Organization record, active in the CMS NPPES registry since July 4, 2006.
## Identity
- **NPI:** 1083644165 (Entity type: Organization)
- **Enumerated:** July 4, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **Legal business name:** Coastal Radiation Oncology Medical Group, Inc.
- **Organization subpart:** No
- **Authorized official:** Jonathan Stella, PRESIDENT
## Practice location
- **Address:** 1240 S WESTLAKE BLVD, SUITE 103, Westlake Village, CA 91361-1929
- **Phone:** (805) 494-4483 · **Fax:** (805) 494-9555
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 15 clinicians (Radiation Oncology) reassign Medicare billing to this organization (form CMS-855R); 2 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 29, 2008
- **Other identifiers:** Medicare PIN W19778; Medicaid GR0047020 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1083644165) · Data from the CMS NPPES public registry.