VIVIAN TANG MD
NPI 1164908141
Pathology - Anatomic Pathology in San Francisco, CA
About Vivian Tang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VIVIAN TANG MD (NPI 1164908141) is an individual anatomic pathology provider in San Francisco, California, licensed in California (A190113) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of University Of California, Davis School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Vivian Tang Md 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 Reassignments
2Medicare enrollment records show Vivian Tang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Vivian Tang's NPI number?
The NPI number for Vivian Tang is 1164908141. It was assigned to this individual provider in the NPPES registry on July 13, 2018.
Where is Vivian Tang located?
Vivian Tang practices at 1825 4th St # L2181, San Francisco, CA 94143. The listed phone number is (415) 353-7043.
What is Vivian Tang's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Vivian Tang enrolled in Medicare?
Yes. Vivian Tang 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 organizations bill Medicare for Vivian Tang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Tang reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Vivian 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 Vivian Tang was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Vivian Tang, MD · NPI 1164908141
Anatomic Pathology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since July 13, 2018.
## Identity
- **NPI:** 1164908141 (Entity type: Individual)
- **Enumerated:** July 13, 2018
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** A190113 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1825 4TH ST # L2181, San Francisco, CA 94143-2350
- **Phone:** (415) 353-7043
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Davis School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** June 27, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1164908141) · Data from the CMS NPPES public registry.