Mr. William J. Morrissey, MD, FAAP, FACEP

Expert Publications

• Cholelithiasis in a six-week-old asymptomatic neonate.
• Circulating cancer cells: pre- and post-chemotherapy observations.
• Primary adenocarcinoma of the jejunum: report of a case.

Media Releases

Dedicated to Providing Exceptional Care for Critically Ill and Injured Children

With a steadfast commitment to the critically ill and injured children in the Texas community, Dr. Morrissey brings a wealth of knowledge and experience to the emergency department at Cook Children’s Medical Center - Prosper, ensuring that young patients receive the highest quality of care.

With a broad educational background, he earned his medical degree from Universidad Catolica Nordestana in the Dominican Republic, where he developed a passion for pediatrics and emergency medicine. He completed his residency at Elmhurst Hospital/Mount Sinai Medical Center in Elmhurst, NY, where he honed his skills in acute care for children. Furthering his expertise, he completed a fellowship at Mount Sinai Medical Center in New York, specializing in pediatric emergency medicine.

“My goal is to provide compassionate, expert care to children in urgent need and to support their families during challenging times. I believe that every child deserves the best possible medical attention, and I am dedicated to making a positive impact in our community, expressed Dr. Morrissey”

Passionate about his profession, the doctor is board-certified by the American Board of Pediatrics and is well-versed in the latest advancements in pediatric emergency care. His clinical interests include trauma management, respiratory emergencies, and the treatment of complex pediatric conditions.

Cook Children’s Medical Center - Prosper is dedicated to providing specialized care for children in a family-centered environment. The addition of Dr. Morrissey enhances the hospital’s commitment to excellence in pediatric emergency services, ensuring that families have access to top-tier medical professionals in their time of need.

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