CASSIE TSENG
NPI 1215301783
Occupational Therapist in Thousand Oaks, CA
About Cassie Tseng NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CASSIE TSENG (NPI 1215301783) is an individual occupational therapist in Thousand Oaks, California, licensed in California (OT18151) and active in the NPI registry since November 2015.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Cassie Tseng is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Cassie Tseng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Woodland Hills, CA 91367
- Reassigned Medicare billing, California enrollment
- 13,921 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.
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 Cassie Tseng's NPI number?
The NPI number for Cassie Tseng is 1215301783. It was assigned to this individual provider in the NPPES registry on November 21, 2015.
Where is Cassie Tseng located?
Cassie Tseng practices at 375 Rolling Oaks Dr # 310, Thousand Oaks, CA 91361. The listed phone number is (805) 497-7015.
What is Cassie Tseng's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Cassie Tseng enrolled in Medicare?
Yes. Cassie Tseng is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Cassie Tseng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cassie Tseng reassigns Medicare benefits to Southern California Permanente Medical Group (Woodland Hills, 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 Cassie Tseng'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 Cassie Tseng was last updated on May 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.