DR. ANDY CHAU M.D.
NPI 1174900104
Hospitalist in Santa Clara, CA
About Dr. Andy Chau M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDY CHAU M.D. (NPI 1174900104) is an individual hospitalist provider in Santa Clara, California, licensed in California (A145343) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (2015).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Andy Chau M.d. 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 Andy Chau reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 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 95051 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.
SANTA CLARA, CA 95051
SANTA CLARA, CA 95051
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 Andy Chau's NPI number?
The NPI number for Andy Chau is 1174900104. It was assigned to this individual provider in the NPPES registry on April 28, 2015.
Where is Andy Chau located?
Andy Chau practices at 710 Lawrence Expy, Santa Clara, CA 95051. The listed phone number is (408) 851-3834.
What is Andy Chau's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Andy Chau enrolled in Medicare?
Yes. Andy Chau 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 Andy Chau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andy Chau reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Andy Chau'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 Andy Chau was last updated on December 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Andy Chau, M.D. · NPI 1174900104
Hospitalist physician in Santa Clara, California. Individual provider, active in the CMS NPPES registry since April 28, 2015.
## Identity
- **NPI:** 1174900104 (Entity type: Individual)
- **Enumerated:** April 28, 2015
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A145343 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 710 LAWRENCE EXPY, Santa Clara, CA 95051-5173
- **Phone:** (408) 851-3834
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 2015
## Record status
- **NPPES last updated:** December 17, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1174900104) · Data from the CMS NPPES public registry.