CHRISTINE YANG
NPI 1003470790
Obstetrics & Gynecology in Pleasanton, CA
About Christine Yang NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTINE YANG (NPI 1003470790) is an individual obstetrics & gynecology provider in Pleasanton, California, licensed in California (A198922) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
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
Christine Yang 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 Christine Yang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 435 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 94566 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 6
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 Christine Yang's NPI number?
The NPI number for Christine Yang is 1003470790. It was assigned to this individual provider in the NPPES registry on April 28, 2019.
Where is Christine Yang located?
Christine Yang practices at 4725 1st St, Pleasanton, CA 94566. The listed phone number is (925) 734-3333.
What is Christine Yang's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Christine Yang enrolled in Medicare?
Yes. Christine Yang 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 Christine Yang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Yang reassigns Medicare benefits to University Healthcare Alliance (Newark, 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 Christine Yang'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 Christine Yang was last updated on February 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Christine Yang · NPI 1003470790
Obstetrics & Gynecology physician in Pleasanton, California. Individual provider, active in the CMS NPPES registry since April 28, 2019.
## Identity
- **NPI:** 1003470790 (Entity type: Individual)
- **Enumerated:** April 28, 2019
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A198922 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4725 1ST ST, Pleasanton, CA 94566-7366
- **Phone:** (925) 734-3333
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Healthcare Alliance (NPI 1760531198, Newark, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** February 26, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003470790) · Data from the CMS NPPES public registry.