VIVIEN Y TSENG MD
NPI 1184798787
Pediatrics in Elk Grove, CA
About Vivien Y Tseng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VIVIEN Y TSENG MD (NPI 1184798787) is an individual pediatrics provider in Elk Grove, California, licensed in California (A71425) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Vivien Y Tseng Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Vivien Tseng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 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 95758 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.
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 Vivien Tseng's NPI number?
The NPI number for Vivien Tseng is 1184798787. It was assigned to this individual provider in the NPPES registry on November 17, 2006. The provider is also known as Vivien K Yee MD.
Where is Vivien Tseng located?
Vivien Tseng practices at 9201 Big Horn Blvd, Elk Grove, CA 95758. The listed phone number is (916) 478-5000.
What is Vivien Tseng's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Vivien Tseng enrolled in Medicare?
Yes. Vivien Tseng is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Vivien Tseng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vivien Tseng reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, 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 Vivien 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 Vivien Tseng was last updated on January 10, 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.
# Vivien Y Tseng, MD · NPI 1184798787
Pediatrics physician in Elk Grove, California. Individual provider, active in the CMS NPPES registry since November 17, 2006.
## Identity
- **NPI:** 1184798787 (Entity type: Individual)
- **Enumerated:** November 17, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A71425 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9201 BIG HORN BLVD, Elk Grove, CA 95758-1240
- **Phone:** (916) 478-5000
## 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:** Permanente Medical Group Inc (NPI 1548343510, Stockton, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 10, 2022
- **Other identifiers:** Medicaid 00A714250 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1184798787) · Data from the CMS NPPES public registry.