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Internal Medicine

William A. Chua, MD

Sees patients in Montebello, CA · Los Angeles, CA · California

Summary

William A. Chua, MD (Internal Medicine) is enrolled with Medicare at 3 practice locations in Montebello, CA and Los Angeles, CA. NPI 1639199656. Source: CMS National Downloadable File, updated 2026-10-02.

Call(323) 728‑0671 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about William A. Chua, 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

3Practice locations
Internal MedicinePrimary specialty
May acceptAccepts Medicare assignment
YesOffers telehealth
54Years since medical school (graduated 1972)
MaleGender (as listed)
Legacy Marketing Worldwide IncGroup practice (+1 more)

Quick answers

Where does William A. Chua see patients?
Medicare's clinician data lists 3 practice locations, including Montebello, CA and Los Angeles, CA. Call before your visit to confirm the address.
What is William A. Chua's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Hematology/Oncology.
Does William A. Chua accept Medicare assignment?
Medicare's clinician data says William A. Chua may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
Does William A. Chua offer telehealth?
Medicare's clinician data says William A. Chua offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for William A. Chua?
(323) 728-0671, as listed in official Medicare / NPI Registry data.
What is William A. Chua's NPI number?
1639199656. 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 William A. Chua is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William A. Chua as a member of these groups (CMS data updated 2026-10-02).

  • Legacy Marketing Worldwide Inc5 clinicians in the group
  • Perpetual Mobile Medical Group Inc3 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Montebello

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

All internal medicine doctors in Montebello →

Clinician information

CredentialMD
Graduation year1972
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1639199656
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