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  • Rikin K. Shah, MD

    Rikin Shah, MD, is a board-certified pediatric hematologist-oncologist with the Haley Center for Children’s Cancer and Blood Disorders at Orlando Health Children's Arnold Palmer Hospital. He specializes in stem cell transplantation and cellular therapy, providing advanced care for children, teens and young adults with blood disorders and cancer.

  • Jeffrey A. Bornstein, MD

    Arnold Palmer Hospital Center for Digestive Health and Nutrition

  • Shaista Syeda Safder, MD

    Shaista Safder, MD, is a graduate of the Deccan College of Medical Science in India. She completed her pediatric residency training at Marshall University in Huntington, West Virginia, where she also served as chief resident. During her residency, she was awarded membership in the Alpha Omega Alpha Honor Medical Society. She completed her fellowship in pediatric gastroenterology and nutrition at Rainbow Babies and Children Hospital at Case Western Reserve University in Cleveland, Ohio.

  • Nishant H. Patel, MD

    Nishant Patel, MD, is a board-certified pediatrician with the Orlando Health Children's Arnold Palmer Hospital Center for Digestive Health and Nutrition. 

  • Cynthia Cornelius, APRN

    Cynthia Cornelius, MSN, APRN, PNP-PC, is a pulmonary nurse practitioner and the cystic fibrosis coordinator at Orlando Health Children's Arnold Palmer Hospital. She has national certifications as both a family and pediatric nurse practitioner. Cynthia earned her BS degree in nursing from the University of Florida. She completed a MS degree in nursing in the Family Nurse Practitioner program at the University of Central Florida with a post-master's certificate as a pediatric nurse practitioner. Cynthia has over 10 years of experience as an intensive care nurse in adult and pediatric populations, including seven years as a nurse with the Arnold Palmer Hospital Pediatric Cardiovascular Intensive Care Unit.

  • Carolina Raijer, APRN

    Carolina, MSN, APRN, PNP-PC, earned her nursing degree from UF and worked as an RN at Shands HealthCare in Gainesville. She joined the Arnold Palmer Hospital Center for Digestive Health and Nutrition in 2008 and has national certification in pediatric practice by the American Nurses Credentialing Center. She is fluent in English and Spanish.

  • Mark A Rich, MD

    Mark A. Rich, MD, FAAP, FACS, is a pediatric urologist with Orlando Health Children's Arnold Palmer Hospital.

  • Khaled Bittar, MD

    Khaled Bittar, MD, is a board-certified physician with the Orlando Health Children's Arnold Palmer Hospital Center for Digestive Health and Nutrition.

    After earning his medical degree from the Faculty of Medicine of Damascus University in Syria, Dr. Bittar completed his residency in general pediatrics at Wayne State University, Children’s Hospital of Michigan at Detroit Medical Center. He completed a fellowship in pediatric gastroenterology with the University of Florida at Orlando Health Arnold Palmer.

    Previously, Dr. Bittar was a clinical instructor in the Department of Pediatrics at Wayne State University School of Medicine and a pediatric hospitalist at Children’s Hospital of Michigan at Detroit Medical Center. He has been involved in research on children with celiac disease and type 1 diabetes mellitus and on mastocytic enterocolitis in children.

    In addition to being a reviewer for the scientific journal, Clinical Pediatrics, Dr. Bittar has co-authored multiple book chapters and co-presented published abstracts at numerous professional meetings. Dr. Bittar is a fellow of the American Academy of Pediatrics (FAAP) and a member of the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition.

  • Justin A. De Boer, MD

    Justin Adam de Boer, MD, FAAP, is a board-certified pediatric gastroenterologist with the Orlando Health Children's Arnold Palmer Hospital Center for Digestive Health and Nutrition. He performs advanced diagnostics and develops treatment plans for pediatric patients with gastrointestinal, liver, and nutritional disorders.

  • Angela Zimmerman, APRN

    Angela Zimmerman is a board-certified pediatric nurse practitioner in acute care (CPNP-AC) with the Orlando Health Children's Neuroscience Institute Neurosurgery, supported by the Leon Pediatric Neuroscience Fund. She manages neurosurgical pediatric patients in the hospital and outpatient settings. She also assists in the operating room and cares for pediatric patients in intensive care, neonatal intensive care (NICU) and less-acute care units.