WILLIAM HUNG-LIANG TU M.D.
NPI 1962699421
Student in an Organized Health Care Education/Training Program in Stanford, CA
About William Hung-liang Tu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM HUNG-LIANG TU M.D. (NPI 1962699421) is an individual student in an organized health care education/training program in Stanford, California, licensed in California (A96696) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and is a graduate of Vanderbilt University School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
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
William Hung-liang Tu 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 William Tu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redwood City, CA 94063
- 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.
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 William Tu's NPI number?
The NPI number for William Tu is 1962699421. It was assigned to this individual provider in the NPPES registry on September 28, 2007.
Where is William Tu located?
William Tu practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-6661.
What is William Tu's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is William Tu enrolled in Medicare?
Yes. William Tu 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 William Tu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Tu reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, 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 William Tu'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 William Tu was last updated on December 20, 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.
# William Hung-Liang Tu, M.D. · NPI 1962699421
Student in an Organized Health Care Education/Training Program provider in Stanford, California. Individual provider, active in the CMS NPPES registry since September 28, 2007.
## Identity
- **NPI:** 1962699421 (Entity type: Individual)
- **Enumerated:** September 28, 2007
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **State license:** A96696 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-6661
## 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:** Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Vanderbilt University School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** December 20, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1962699421) · Data from the CMS NPPES public registry.