SIYUAN JOHN LIU MD, PHD
NPI 1316406317
Radiology - Radiation Oncology in San Francisco, CA
About Siyuan John Liu Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIYUAN JOHN LIU MD, PHD (NPI 1316406317) is an individual radiation oncology provider in San Francisco, California, licensed in California (A180710) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of University Of California, San Francisco School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Siyuan John Liu Md, Phd 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 Siyuan Liu 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 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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
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 Siyuan Liu's NPI number?
The NPI number for Siyuan Liu is 1316406317. It was assigned to this individual provider in the NPPES registry on March 19, 2019. The provider is also known as John Liu MD, Phd.
Where is Siyuan Liu located?
Siyuan Liu practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-7175.
What is Siyuan Liu's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Siyuan Liu enrolled in Medicare?
Yes. Siyuan Liu 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 Siyuan Liu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siyuan Liu reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (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 Siyuan Liu'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 Siyuan Liu was last updated on April 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Siyuan John Liu, MD, PHD · NPI 1316406317
Radiation Oncology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 19, 2019.
## Identity
- **NPI:** 1316406317 (Entity type: Individual)
- **Enumerated:** March 19, 2019
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** A180710 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 353-7175
## 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): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** April 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1316406317) · Data from the CMS NPPES public registry.