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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 McMullen:

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Specialties & Research

Dr. William McMullen, MD is board certified in Ophthalmology.

  • He has special expertise in 3 areas:
  • Cataract Surgery
  • Retina Surgery
  • Retinal Disorders

Education & Awards

Dr. McMullen graduated from The University of Texas at Houston.


Dr. McMullen has 8 hospital affiliations:

  • Clear Lake Regional Medical Center 
  • Memorial Hermann Hospital 


  • Spanish

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Additional Information
Dr. William Wynn McMullen MD is a male Ophthalmologist, has 25 years of experience and practices in Ophthalmology.
Where does Dr. William W. McMullen practice?
Dr. William McMullen has 3 office locations.
Dr. William McMullen practices Ophthalmology near Pasadena, TX.
Additional practice locations include: Webster, TX and Alvin, TX.
See Pasadena Ophthalmologists.