PEGGY TSENG MD
NPI 1740686856
Emergency Medicine in Los Angeles, CA
About Peggy Tseng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PEGGY TSENG MD (NPI 1740686856) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A133151) and active in the NPI registry since November 2014. She is enrolled in Medicare PECOS.
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 (PECOS)
Peggy Tseng Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Peggy Tseng reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 169 clinicians in this Medicare group
Monterey Park, CA 91754
- Reassigned Medicare billing, California enrollment
- 50 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90033 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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Peggy Tseng's NPI number?
The NPI number for Peggy Tseng is 1740686856. It was assigned to this individual provider in the NPPES registry on November 17, 2014.
Where is Peggy Tseng located?
Peggy Tseng practices at 1200 N State St Rm 1011 Lac Usc Medical Center, Los Angeles, CA 90033. The listed phone number is (323) 226-2828.
What is Peggy Tseng's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Peggy Tseng enrolled in Medicare?
Yes. Peggy Tseng is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Peggy Tseng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peggy Tseng reassigns Medicare benefits to 3 organizations: Usc Care Medical Group, Inc (Los Angeles, CA), Golden State Emergency Physicians Inc (Los Angeles, CA) and Golden West Emergency Medical Associates, Inc (Monterey Park, CA). Each 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 Peggy 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 Peggy Tseng was last updated on February 13, 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.
# Peggy Tseng, MD · NPI 1740686856
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since November 17, 2014.
## Identity
- **NPI:** 1740686856 (Entity type: Individual)
- **Enumerated:** November 17, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A133151 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1200 N STATE ST RM 1011, LAC USC MEDICAL CENTER, Los Angeles, CA 90033-1029
- **Phone:** (323) 226-2828 · **Fax:** (323) 226-8101
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA); Golden State Emergency Physicians Inc (NPI 1770886558, Los Angeles, CA); Golden West Emergency Medical Associates, Inc (NPI 1053680298, Monterey Park, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1740686856) · Data from the CMS NPPES public registry.