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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).

Learn more about Dr. William Annan:

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Specialties & Research

Dr. William Annan, MD is board certified in Surgery.

Education & Awards

Dr. Annan graduated from UMDNJ, Newark.


Dr. Annan has 5 hospital affiliations:

  • St. Joseph Hospital - Orange 
  • Los Alamitos Medical Center 

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Additional Information
Dr. William Gibson Annan MD is a male Surgeon, has 45 years of experience and practices in Surgery.
Where does Dr. William G. Annan practice?
Dr. William Annan has 1 office location.
Dr. William Annan practices Surgery near Garden Grove, CA.
See Garden Grove Surgeons.