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Geriatric Specialist (elderly care)
24 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

  • He has special expertise in 1 area:
  • Alzheimer Disease

Education & Awards

Dr. Chang graduated from University of California at Irvine.


Dr. Chang has 5 hospital affiliations:

  • John Muir Medical Center, Concord Campus 
  • John Muir Medical Center, Walnut Creek Campus 


  • Taiwanese
  • Mandarin
  • Chinese

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Additional Information
Dr. David Clifford Chang MD is a male Internist, has 24 years of experience and practices in Geriatric Medicine.
Where does Dr. David C. Chang practice?
Dr. David Chang has 2 office locations.
Dr. David Chang practices Geriatric Medicine near Walnut Creek, CA.
Additional practice locations include: Los Angeles, CA.
See Walnut Creek Geriatric Doctors.