HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

WILLIS L CHANG, MD

INTERNAL MEDICINE

Graduated: 2001

NPI: 1831496538

Practice Locations (1)

COUNTY OF LOS ANGELES

5850 S MAIN ST

LOS ANGELES, CA 900031215

3238976000

Source: CMS National Downloadable File, September 2026.

WILLIS CHANG, MD | HealthCareAtlasUSA