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Internist, Physiatrist (physical, rehabilitation), Neurologist (brain, nervous system)
35 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Specialties & Research

Dr. Douglas Chang, MD, PHD is board certified in Internal Medicine and Neurology.

  • He has special expertise in 6 areas:
  • Alzheimer Disease
  • Epilepsy
  • Migraine Disorders
  • Multiple Sclerosis (MS)
  • Neurology
  • Sports Medicine

Education & Awards

Dr. Chang graduated from University of California at Los Angeles.


Dr. Chang has 14 hospital affiliations:

  • Los Alamitos Medical Center 
  • Long Beach Memorial Medical Center 


  • Mandarin
  • German
  • Chinese

> > > > Dr. Douglas Chang, MD, PHD

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Additional Information
Dr. Douglas G Chang MD and PHD is a male Internist, has 35 years of experience and practices in Neurology, Internal Medicine, and Physical Medicine & Rehabilitation.
Where does Dr. Douglas G. Chang practice?
Dr. Douglas Chang has 3 office locations.
Dr. Douglas Chang practices Neurology, Internal Medicine, and Physical Medicine & Rehabilitation near Foothill Ranch, CA.
Additional practice locations include: La Jolla, CA and San Diego, CA.
See Foothill Ranch Neurologists, Foothill Ranch Internists, and Foothill Ranch Physiatrists.