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

Dermatology

Joan C. Wu, MD

Sees patients in San Diego, CA · Placerville, CA · California

Summary

Joan C. Wu, MD (Dermatology) is enrolled with Medicare at 2 practice locations in San Diego, CA and Placerville, CA. NPI 1144345372. 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 Joan C. Wu, 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

DermatologyPrimary specialty
YesAccepts Medicare assignment
31Years since medical school (graduated 1995)
University Of California, San Diego School Of MedicineMedical school
FemaleGender (as listed)
On Site Dermatology of California, PCGroup practice

Quick answers

Where does Joan C. Wu see patients?
Medicare's clinician data lists 2 practice locations, including San Diego, CA and Placerville, CA. Call before your visit to confirm the address.
What is Joan C. Wu's specialty?
Medicare lists Dermatology as the primary specialty.
Does Joan C. Wu accept Medicare assignment?
Yes. Medicare's clinician data says Joan C. Wu 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 Joan C. Wu?
(877) 345-5300, as listed in official Medicare / NPI Registry data.
What is Joan C. Wu's NPI number?
1144345372. 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 Joan C. Wu is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Joan C. Wu as a member of this group (CMS data updated 2026-10-02).

  • On Site Dermatology of California, PC2 clinicians in the group

Specialties

Find other Dermatology doctors in California →

Other dermatologists in San Diego

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

All dermatologists in San Diego →

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year1995
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1144345372
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