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

Hospitalist

Justin C. Zhang, MD

Sees patients in San Francisco, CA · California

Summary

Dr. Justin C. Zhang, MD is a hospitalist at 505 Parnassus Ave, San Francisco, CA 94143. Phone: (415) 476-4029. Accepts Medicare assignment. NPI 1568112761. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Hospitalist
  • Address: 505 Parnassus Ave, San Francisco, CA 94143 · Directions
  • Phone: (415) 476‑4029
  • Medicare: Accepts Medicare assignment
  • Group practice: Regents of the University of California
  • Medical school: University Of California, Geffen School Of Medicine · graduated 2022 (4 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Justin C. Zhang, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Justin C. Zhang accept Medicare assignment?
Yes. Medicare's clinician data says Justin C. Zhang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Justin C. Zhang's NPI number?
1568112761. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Justin C. Zhang is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Justin C. Zhang as a member of this group (CMS data updated October 2, 2026).

  • Regents of the University of California732 clinicians in the group

Specialties

Find other Hospitalist doctors in California →

Other hospitalists in San Francisco

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

All hospitalists in San Francisco →

Other clinicians in Regents of the University of California

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of California, Geffen School Of Medicine
Graduation year2022 (4 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568112761
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians