JEFFREY TSENG, MD, INC.
NPI 1124387014
Clinic/Center - Medical Specialty in Thousand Oaks, CA
About Jeffrey Tseng, Md, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JEFFREY TSENG, MD, INC. (NPI 1124387014) is a healthcare organization registered as a medical specialty in Thousand Oaks, California and active in the NPI registry since May 2012. The organization lists Jeffrey Tseng, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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)
Jeffrey Tseng, 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 Jeffrey Tseng, 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 Jeffrey Tseng, MD, Inc.'s NPI number?
The NPI number for Jeffrey Tseng, MD, Inc. is 1124387014. It was assigned to this organization in the NPPES registry on May 11, 2012.
Where is Jeffrey Tseng, MD, Inc. located?
Jeffrey Tseng, MD, Inc. is located at 2220 Lynn Rd Suite 109, Thousand Oaks, CA 91360. The listed phone number is (805) 496-8103.
What is Jeffrey Tseng, MD, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.
Is Jeffrey Tseng, MD, Inc. enrolled in Medicare?
Yes. Jeffrey Tseng, MD, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Jeffrey Tseng, MD, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Otolaryngology) reassigns their Medicare billing to Jeffrey Tseng, 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 Jeffrey Tseng, MD, Inc. was last updated on December 17, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Jeffrey Tseng, Md, Inc. · NPI 1124387014
Medical Specialty organization in Thousand Oaks, California. Organization record, active in the CMS NPPES registry since May 11, 2012.
## Identity
- **NPI:** 1124387014 (Entity type: Organization)
- **Enumerated:** May 11, 2012
- **Primary specialty:** Clinic/Center - Medical Specialty · taxonomy 261QM2500X
- **Organization subpart:** No
- **Authorized official:** Jeffrey Tseng, PRESIDENT
## Practice location
- **Address:** 2220 LYNN RD, SUITE 109, Thousand Oaks, CA 91360-1904
- **Phone:** (805) 496-8103 · **Fax:** (805) 496-9661
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Otolaryngology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 17, 2012
- **Other identifiers:** Other CJ469A (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124387014) · Data from the CMS NPPES public registry.