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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- Currently 4 of 4 stars
The overall average patient rating of Dr. David Chang is Excellent.
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Specialties & Research
Dr. David Chang, MD is board certified in Ophthalmology.
He has special expertise in 1 Area, including Lens Implants Intraocular Lens Implantation.
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Education & Awards
Dr. Chang graduated from Harvard University , Boston. He has 3 awards.
Dr. Chang has 4 hospital affiliations:
- O'Connor Hospital - San Jose
- El Camino Hospital
Accepted Insurance Plans
Dr. Chang accepts these health insurances in at least one office:
- United Healthcare - 16 plans
- Unicare - 11 plans
- Anthem Blue Cross - 9 plans
- Cigna - 14 plans
- Blue Shield of California - 78 plans
- Humana - 6 plans
- USA H & W Network - 1 plan
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