SEAN WILLIAM KALOOSTIAN MD INC.
NPI 1760137335
Neurological Surgery in Riverside, CA
About Sean William Kaloostian Md Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SEAN WILLIAM KALOOSTIAN MD INC. (NPI 1760137335) is a healthcare organization registered as a neurological surgery in Riverside, California and active in the NPI registry since February 2022. The organization lists Sean William Kaloostian, President, 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)
Sean William Kaloostian Md Inc. 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 Sean William Kaloostian MD Inc., 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 Sean William Kaloostian MD Inc.'s NPI number?
The NPI number for Sean William Kaloostian MD Inc. is 1760137335. It was assigned to this organization in the NPPES registry on February 12, 2022.
Where is Sean William Kaloostian MD Inc. located?
Sean William Kaloostian MD Inc. is located at 4445 Magnolia Ave, Riverside, CA 92501. The listed phone number is (951) 788-3000.
What is Sean William Kaloostian MD Inc.'s specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Sean William Kaloostian MD Inc. enrolled in Medicare?
Yes. Sean William Kaloostian MD Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Sean William Kaloostian MD Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurosurgery) reassigns their Medicare billing to Sean William Kaloostian MD 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Sean William Kaloostian MD Inc. was last updated on February 12, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.