Meet the Neurosurgery Team

Our neurosurgery team works with other pediatric specialists at Nicklaus Children’s to establish an accurate diagnosis, develop a specialized treatment plan and provide comprehensive treatment to all patients.

John Ragheb, MD

Interim Chief, Department of Surgery
Director, Division of Neurosurgery

Locations: Aventura, Miami, Naples

Clinical Interests: Neurosurgery, neurotrauma, brain tumors, spina bifida, tethered spinal cord, congenital anomalies

Gregory W Hornig, MD


Locations: Miami

Clinical Interests: Hydrocephalus, epilepsy, spasticity, trauma and brain tumors

Toba N Niazi, MD

Pediatric Neurosurgeon

Locations: Boynton Beach, Miami, Palm Beach Gardens

Clinical Interests: Brain and spinal cord tumors, cerebral palsy, spasticity and movement disorders, complex congenital or traumatic spinal disorders.

See all Pediatric Neurosurgeons on the Nicklaus Children's Hospital medical staff.

Nursing Staff


Ana Diaz, ARNP 

Patricia Tavio, ARNP 

Ann McNeil, RN 

Administrative Staff

  • Olga Conde, Office Manager
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 A physician identified with a Pediatric Specialists of America (PSA) logo is an employee of PSA, which is part of Nicklaus Children's Health System. All other physicians listed on the website are in private medical practices.