PEI H TSAU MD
NPI 1235203910
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Palo Alto, CA
About Pei H Tsau Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PEI H TSAU MD (NPI 1235203910) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Palo Alto, California, licensed in California (C55016) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Arizona College Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 2
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
Pei H Tsau 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 Reassignment
Medicare enrollment records show Pei Tsau reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bakersfield, CA 93312
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1275756652 (California)
- 5,228 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94301 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.
PALO ALTO, CA 94301
PALO ALTO, CA 94301
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 Pei Tsau's NPI number?
The NPI number for Pei Tsau is 1235203910. It was assigned to this individual provider in the NPPES registry on November 17, 2006.
Where is Pei Tsau located?
Pei Tsau practices at 87 Encina Ave, Palo Alto, CA 94301. The listed phone number is (650) 853-5745.
What is Pei Tsau's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Pei Tsau enrolled in Medicare?
Yes. Pei Tsau 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 Pei Tsau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Pei Tsau reassigns Medicare benefits to Southern California Permanente Medical Group (Bakersfield, 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 Pei Tsau'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 Pei Tsau was last updated on May 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Pei H Tsau, MD · NPI 1235203910
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since November 17, 2006.
## Identity
- **NPI:** 1235203910 (Entity type: Individual)
- **Enumerated:** November 17, 2006
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** C55016 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 87 ENCINA AVE, Palo Alto, CA 94301-2322
- **Phone:** (650) 853-5745
## 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:** Southern California Permanente Medical Group (NPI 1316572753, Bakersfield, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Arizona College Of Medicine, class of 1994
## Record status
- **NPPES last updated:** May 28, 2020
- **Other identifiers:** Medicaid 697336 (AZ); Other P00804180 (AZ)
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Source: [NPI Profile](https://npiprofile.com/npi/1235203910) · Data from the CMS NPPES public registry.