The Orlando Epilepsy Center team consists of highly skilled Neurology providers who all specialize in Epilepsy. Dr. Sadek, an Epileptologist, is the founder and Medical Director. He has hand picked and trained each of our staff members extensively.
Both of our Neurologists have received additional training in Epilepsy enabling them to provide the highest standard of care. Our Nurse Practitioners specialize in Neurology and are qualified to face even the toughest seizure challenges.


Dr. Sadek, Epileptologist, is the founder and Medical Director of Orlando Epilepsy Center.  Dr. Sadek is an Ivy-League trained neurologist with a fellowship in the field of Epilepsy. He is triple board-certified in Neurology and Clinical Neurophysiology with great expertise in epilepsy management and monitoring of refractory epilepsy patients.

He received his medical education at Cairo University, Egypt where he held a faculty status before his move to the United States. Dr. Sadek received extensive training in neurology, neuroimaging, Epilepsy and Clinical Neurophysiology. He received residency training at Baylor College of Medicine, Houston, Texas. He then completed a two year subspecialty fellowship training in epilepsy and clinical neurophysiology at the University of Pennsylvania, in Philadelphia, PA, which is recognized as one of the premier epilepsy centers in the country. Dr. Sadek also completed a two year neuroimaging research fellowship at the University of Pennsylvania and has authored numerous publications. He has been practicing as part of Neurological Services of Orlando since 2007.

Dr. Sadek opened the Orlando Epilepsy Center Monitoring Unit in 2011 in order to be able to closely monitor seizure patients in a comfortable, home-like environment instead of the traditional hospital setting. Link to EMU

Dr. Sadek is a member of the American Epilepsy Society, International League Against Epilepsy, American Clinical Neurophysiology Society, and American Academy of Neurology.

He is an Assistant Professor of Neurology at the University of Central Florida College of Medicine and a Clinical Assistant Professor of Neurology at University of Florida- Shands, Gainesville.


Neurology – (1997-2001)

Baylor College of Medicine, Houston, Texas

Epilepsy and Clinical Neurophysiology – (2001-2003)
University of Pennsylvania, Philadelphia PA
Neuroimaging Research – (1995-1997)
University of Pennsylvania, Philadelphia PA
American Academy of Neurology, American Epilepsy Society

Dr. Iyengar


Dr. Revathi Iyengar, Neurologist, is Board certified by the American Board of Psychiatry and Neurology. She received her Medical degree in 1996 and performed her Residency at UMNDJ and SUNY Upstate in 2011 where she managed the Neuro Critical Care unit and developed her passion for Epilepsy.

Dr. Iyengar then received her Fellowship training in Epilepsy from Henry Ford Hospital in 2012. Since then, she has been working as part of Orlando Epilepsy Center as a provider in the practice, Epilepsy Monitoring Unit supervising physician, and rounding physician at several area hospitals. In her free time, Dr. Iyengar enjoys biking, reading, listening to music, and spending time with her family.

Heng Chai Lai


Heng Chai received his bachelor degree in nursing (BSN) from the University of Central Florida and began practicing as a registered nurse in neuroscience in 2006. During his practice as an RN he was an active member of the neuroscience unit practice council at a large, local, stroke-certified hospital. There, he often became the first-responder called to assist neurologists in the evaluations of new stroke patients.

In 2010, he obtained his specialty certification as a Certified Neuroscience Registered Nurse (CNRN). Soon after the start of his practice, Heng Chai served as a nurse leader and as a charge nurse. He also supplemented his knowledge by returning to graduate classes at the University of Central Florida where also in 2010, he received his Master of Nursing as an Advanced Registered Nurse Practitioner.

He has functioned as an adjunct instructor in a CNRN preparation course and has given lectures at various local venues including The Annual Heart and Vascular Conference in 2010. Heng Chai also worked closely with Dr. Sadek and Dr. Verma as a rounding nurse in 2010 and joined Neurological Services of Orlando in 2011 as a nurse practitioner.

Kristen Batson


Kristen is a board certified adult-geriatric nurse practitioner treating patients from the age of 13 through end of life. She graduated in 2011 from the University of Florida (Go Gators!) with her bachelor’s degree in nursing. She worked for several years as an RN while working on her master’s degree in nursing at the University of Central Florida.

She has been working with Dr. Sadek and his team since 2014 and has a passion for neurology and educating patients on their medical conditions. She is a member of the American Association of Nurse Practitioner’s, Sigma Theta Tau International Honor Society of Nursing, and the American Epilepsy Society. In her spare time she enjoys reading, working out, yoga, and traveling.