Provider Profiles

Mary Kate Tillman M.D.

Mary Kate TillmanDr. Tillman is certified by the American Board of Pediatrics. She completed her undergraduate education at the University of Notre Dame. She received her medical degree from the Medical College of Virginia. Dr. Tillman completed pediatric residency training locally at MUSC. Dr. Tillman is on active medical staff at Trident and Summerville Medical Centers. Dr. Tillman is married and the mother of three children. She enjoys swimming, boating, and gardening.

Esther Wilson M.D.

dr wilsonDr. Wilson is from upper east Tennessee, where she earned her undergraduate degree at King College.  She and her husband David met as counselors at a kids camp in the area.  She attended the University of Tennessee College of Medicine in Memphis and Knoxville and graduated in 2010.  She completed her pediatric residency with UT in Chattanooga in 2013.  Dr. Wilson enjoys music, art and visiting the beach with her husband and dog, Millie.


Jessica Litsey, M.D.

Dr. Jessie Litsey is a graduate of Medical College of Georgia and completed pediatric residency training at MUSC.  Her dream has been to become a pediatrician and is thrilled for the opportunity to join Oakbrook Pediatrics to serve as a community pediatrician and call Summerville her home. When she is not working, she enjoys spending time with her husband Jed, daughter Ellie Kate, and two dogs, Scrubs and Sophia.


Mary Lou Korpon, CPNP

Mary Lou Korpon is a Certified Pediatric Nurse Practitioner. She received her Masters of Science in Nursing from the University of Arizona and her Pediatric Nurse Practioner Certificate from the School of Nursing at Emory University in Atlanta. Prior to joining Oakbrook Pediatrics, Mary Lou practiced at MUSC and currently serves as a preceptor for the Pediatric Nurse Practitioner students. Her special interests include nutrition and gastrointestinal problems. Mary Lou works in collaboration with the doctors to provide your child with a wide range of high-quality primary care services from birth through young adulthood. Mary Lou likes to bake and cook for friends. 

Hannah Winningham, CPNP

Hannah Hannah1Waite was born and raised in Summerville, SC.  She graduated from the University of  South Carolina in 2012 with her Bachelor of Science in Nursing and worked as a staff RN on a medical-surgical floor at Summerville Medical Center.  She obtained her Master of Science degree from MUSC and graduated in summer of 2014.  Hannah currently lives in the Summerville area with her husband and their 2 beautiful children.  She enjoys boating, spending time with family, shopping, and taking trips to Lander University to watch her brother play baseball.