STANTON T. SIU MD
NPI 1104904978
Internal Medicine - Critical Care Medicine in Oakland, CA
About Stanton T. Siu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STANTON T. SIU MD (NPI 1104904978) is an individual critical care medicine provider in Oakland, California, licensed in California (G45787) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Stanton T. Siu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Stanton Siu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Richmond, CA 94801
- 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 94611 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.
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 Stanton Siu's NPI number?
The NPI number for Stanton Siu is 1104904978. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Stanton Siu located?
Stanton Siu practices at 275 W Macarthur, Oakland, CA 94611. The listed phone number is (510) 752-1000.
What is Stanton Siu's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Stanton Siu enrolled in Medicare?
Yes. Stanton Siu is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Stanton Siu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stanton Siu reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, 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 Stanton Siu'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 Stanton Siu was last updated on October 29, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.