DR. PATRIKA M TSAI MD
NPI 1659430049
Pediatrics in San Francisco, CA
About Dr. Patrika M Tsai Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PATRIKA M TSAI MD (NPI 1659430049) is an individual pediatrics provider in San Francisco, California, licensed in California (A96242) and active in the NPI registry since December 2006. 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)
Dr. Patrika M Tsai Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Patrika Tsai 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 94143
- Reassigned Medicare billing, California enrollment
- 1,159 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.
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.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Patrika Tsai's NPI number?
The NPI number for Patrika Tsai is 1659430049. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is Patrika Tsai located?
Patrika Tsai practices at 400 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-2813.
What is Patrika Tsai's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Patrika Tsai enrolled in Medicare?
Yes. Patrika Tsai is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Patrika Tsai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrika Tsai reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Pediatrics Associates (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 Patrika Tsai'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 Patrika Tsai was last updated on July 22, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Patrika M Tsai, MD · NPI 1659430049
Pediatrics physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1659430049 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A96242 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 PARNASSUS AVE, San Francisco, CA 94143-2202
- **Phone:** (415) 353-2813
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 22, 2008
---
Source: [NPI Profile](https://npiprofile.com/npi/1659430049) · Data from the CMS NPPES public registry.