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).
Learn more about Dr. William Chang:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. William Chang is Excellent.
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Specialties & Research
Dr. William Chang, DO is board certified in Internal Medicine, Critical Care Medicine, and Pulmonary Disease.
Education & Awards
Dr. Chang graduated from Michigan State University College of Osteopathic Medicine, East Lansing.
Dr. Chang has 13 hospital affiliations:
- Saddleback Memorial Medical Center-Laguna Hills
- Saddleback Memorial Medical Center - San Clemente
Accepted Insurance Plans
Dr. Chang accepts these health insurances in at least one office:
- United Healthcare - 16 plans
- Blue Shield of California - 88 plans
- Great-West Healthcare - 4 plans
- Unicare - 12 plans
- CaIOPTIMA - 5 plans
- Anthem Blue Cross - 11 plans
- Cigna - 2 plans
- Humana - 6 plans
Similar doctors nearby
- Additional Information
- Where does Dr. William W. Chang practice?
Dr. William Chang practices Internal Medicine, Critical Care Medicine, and Pulmonary Disease near San Juan Capistrano, CA.
See San Juan Capistrano Internists, San Juan Capistrano Critical Care Practitioners, and San Juan Capistrano Pulmonologists.