JOYCE MARIA TANG MD
NPI 1689903171
Family Medicine in Martinez, CA
About Joyce Maria Tang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOYCE MARIA TANG MD (NPI 1689903171) is an individual family medicine provider in Martinez, California, licensed in California (A72663) and active in the NPI registry since December 2009. She is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (1998).
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)
Joyce Maria Tang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joyce Tang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Martinez, CA 94553
- Reassigned Medicare billing, California enrollment
- 530 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 94553 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.
MARTINEZ, CA 94553
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 Joyce Tang's NPI number?
The NPI number for Joyce Tang is 1689903171. It was assigned to this individual provider in the NPPES registry on December 14, 2009.
Where is Joyce Tang located?
Joyce Tang practices at 2500 Alhambra Ave, Martinez, CA 94553. The listed phone number is (925) 370-5110.
What is Joyce Tang's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Joyce Tang enrolled in Medicare?
Yes. Joyce Tang is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joyce Tang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joyce Tang reassigns Medicare benefits to Contra Costa County (Martinez, 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 Joyce Tang'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 Joyce Tang was last updated on December 14, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.