HARRISON SZE MING CHAU MD
NPI 1356878458
Surgery - Surgical Critical Care in Stanford, CA
About Harrison Sze Ming Chau Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HARRISON SZE MING CHAU MD (NPI 1356878458) is an individual surgical critical care provider in Stanford, California, licensed in California (A161867) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Diego, and is a graduate of University Of Cincinnati College Of Medicine (2017).
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
Harrison Sze Ming Chau 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 Harrison Chau reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 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.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Harrison Chau's NPI number?
The NPI number for Harrison Chau is 1356878458. It was assigned to this individual provider in the NPPES registry on May 19, 2017.
Where is Harrison Chau located?
Harrison Chau practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Harrison Chau's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Harrison Chau enrolled in Medicare?
Yes. Harrison 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 organizations bill Medicare for Harrison Chau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Harrison Chau reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, 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 Harrison 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 Harrison Chau was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Harrison Sze Ming Chau, MD · NPI 1356878458
Surgical Critical Care physician in Stanford, California. Individual provider, active in the CMS NPPES registry since May 19, 2017.
## Identity
- **NPI:** 1356878458 (Entity type: Individual)
- **Enumerated:** May 19, 2017
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** A161867 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Cincinnati College Of Medicine, class of 2017
## Record status
- **NPPES last updated:** October 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1356878458) · Data from the CMS NPPES public registry.