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

Emergency Medicine

Joy Li, MD

Sees patients in Walnut Creek, CA · California

Summary

Joy Li, MD (Emergency Medicine) is enrolled with Medicare at 1 practice location in Walnut Creek, CA. NPI 1609512060. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Joy Li, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
4Years since medical school (graduated 2022)
New York Medical CollegeMedical school
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Joy Li see patients?
Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
What is Joy Li's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Joy Li accept Medicare assignment?
Yes. Medicare's clinician data says Joy Li 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.
What is the phone number for Joy Li?
(925) 295-4000, as listed in official Medicare / NPI Registry data.
What is Joy Li's NPI number?
1609512060. 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 Joy Li is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Walnut Creek

Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.

All emergency medicine doctors in Walnut Creek →

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year2022
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609512060
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 2026-10-02, retrieved 2026-10-29
  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