CASSIDY CARINA LIU KOO
NPI 1497495535
Family Medicine in Grand Terrace, CA
About Cassidy Carina Liu Koo NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CASSIDY CARINA LIU KOO (NPI 1497495535) is an individual family medicine provider in Grand Terrace, California, licensed in California (190520) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of Un Of California, Riverside, School Of Medicine (2022).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Cassidy Carina Liu Koo is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Cassidy Koo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Terrace, CA 92313
- Reassigned Medicare billing, Texas enrollment
- 101 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92313 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND TERRACE, CA 92313
GRAND TERRACE, CA 92313
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 Cassidy Koo's NPI number?
The NPI number for Cassidy Koo is 1497495535. It was assigned to this individual provider in the NPPES registry on March 29, 2022.
Where is Cassidy Koo located?
Cassidy Koo practices at 11980 Mount Vernon Ave, Grand Terrace, CA 92313. The listed phone number is (909) 864-1097.
What is Cassidy Koo's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Cassidy Koo enrolled in Medicare?
Yes. Cassidy Koo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Cassidy Koo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cassidy Koo reassigns Medicare benefits to Riverside-San Bernardino County Indian Health, Inc. (Grand Terrace, CA). The 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 Cassidy Koo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Cassidy Koo was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.