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William N May, M.D.

Photo of Dr. William N May, M.D.

Co-Director of the Johns Hopkins Zika Center

Associate Professor of Ophthalmology


Languages: English, Portuguese, Spanish

Expertise: Comprehensive Medical and Surgical Ophthalmology

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The Johns Hopkins Hospital
Appointment Phone: 410-955-5080

600 N. Wolfe Street
Wilmer Eye Institute
Baltimore, MD 21287 map


Dr. William May is an associate professor of ophthalmology at the Wilmer Eye Institute at Johns Hopkins, and a clinical professor of ophthalmology at the University of Southern California. He specializes in cataract and refractive surgery. As a comprehensive ophthalmologist, he is qualified to care for a broad range of eye care problems. Dr. May’s particular interest is femtosecond laser cataract surgery, eye problems in the Middle East, and prevention of blindness in children through early detection of eye diseases worldwide.

Dr. May graduated magna cum laude from the University of California in San Diego with a bachelor of arts degree in biology. 

Dr. May received his medical degree from the University of California at Davis where he was the Morton Levitt Research Scholar. He completed his ophthalmology residency at The University of Southern California’s Doheny Eye Institute, where he later received fellowship training in refractive surgery. He subsequently served as the president of the USC- Doheny Refractive Surgery Medical Group.

Dr. May joined the Wilmer faculty in 2013, when he became director of the Anterior Segment division at the King Khaled Eye Specialist Hospital in Saudi Arabia. He returned to the United States in early 2016 and joined the Wilmer Eye Institute’s Comprehensive Eye Service. In August 2016, Dr. May became one of the founding members of the Johns Hopkins Zika Center, dedicated to caring for patients of all ages with Zika virus. May currently serves as the co-director of the center.

Prior to joining Johns Hopkins, Dr. May practiced simultaneously in multiple locations throughout Southern California, including Los Angeles and Catalina Island, and was named one of the “Best Doctors in America.”  

He is one of the co-founders of the American Brazilian Ophthalmology Association, and as its current U.S. president, frequently travels to lecture in Brazil. He speaks Spanish and Portuguese. more


  • Co-Director of the Johns Hopkins Zika Center
  • Associate Professor of Ophthalmology

Departments / Divisions

Centers & Institutes



  • MD, University of California Davis School of Medicine (1984)


  • Los Angeles County-USC Medical Center / Ophthalmology (1988)


  • Los Angeles County-USC Medical Center (1996)

Board Certifications

  • American Board of Ophthalmology / Ophthalmology (1990)

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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