Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Urology

William Thieu, MD

Works at hospitals in San Jose, CA · California

Summary

William Thieu, MD (Urology) is listed by Medicare at 1 hospital in San Jose, CA. NPI 1912273996. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about William Thieu, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

UrologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
12Years since medical school (graduated 2014)
University Of California, Davis School Of MedicineMedical school
MaleGender (as listed)
County of Santa ClaraGroup practice

Quick answers

Which hospitals does William Thieu work at?
Medicare's official clinician data lists William Thieu at 1 hospital: Santa Clara Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William Thieu see patients?
Medicare's clinician data lists 2 practice locations, including San Jose, CA. Call before your visit to confirm the address.
What is William Thieu's specialty?
Medicare lists Urology as the primary specialty.
Does William Thieu accept Medicare assignment?
Yes. Medicare's clinician data says William Thieu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does William Thieu offer telehealth?
Medicare's clinician data says William Thieu offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for William Thieu?
(408) 885-5000, as listed in official Medicare / NPI Registry data.
What is William Thieu's NPI number?
1912273996. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William Thieu works

Medicare's Facility Affiliation Data lists William Thieu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where William Thieu is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William Thieu as a member of this group (CMS data updated 2026-10-02).

  • County of Santa Clara1,022 clinicians in the group

Specialties

Find other Urology doctors in California →

Other urologists in San Jose

Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.

All urologists in San Jose →

Clinician information

CredentialMD
Medical schoolUniversity Of California, Davis School Of Medicine
Graduation year2014
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1912273996
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians