Our Providers


Mark S. Reuben, MD, FAAP

Dr. Mark S. Reuben founded Reading Pediatrics as a solo practice in 1976, when he returned to his native Reading. A graduate of Reading High School, Penn State University and Thomas Jefferson University Medical School, Dr. Reuben did his pediatric training at St. Christopher’s Hospital for Children in Philadelphia. Dr. Reuben was director of the Department of Pediatrics at the Reading Hospital and Medical Center and St. Joseph Hospital. He is an active member of the American Academy of Pediatrics, having chaired its Medical Liability Committee and served on the Committee for Child Health Financing. He served as president of the Pennsylvania Chapter in 2000-2002. Additionally, Dr. Reuben is a consultant for Highmark (Pennsylvania Blue Shield). Locally, Dr. Reuben has been an active advisor for the Berks County Children and Youth Services, providing consultation on child abuse cases and serving on their Citizens Advisory Board. Additionally, he chairs the Berks County Child Death Review Team. He and his wife occupy their spare time with her singing and golfing together, as well as spending time with their 4 grandchildren.

Dennis DiRenzo, MD

Dr. Dennis P. DiRenzo was born in Shenandoah, Pennsylvania, and raised in Norristown, Pennsylvania. He is a cum laude graduate of Franklin and Marshall College where he is a Phi Beta Kappa scholar and received an award in chemistry for academic excellence. He is a graduate of Pennsylvania State University College of Medicine at Hershey where he also received an award for academic excellence. Dr. DiRenzo did his pediatric residency at Strong Memorial Hospital at the University of Rochester in Rochester, New York, and then joined the practice at Reading Pediatrics. He is a member of the Berks County Medical Society, is a Fellow in the American Academy of Pediatrics, and is board certified in pediatrics. He is married and has two children. His hobbies include reading, traveling, and music. He is currently Chief of Pediatrics at The Reading Hospital Medical Center.


Raymond Hubbard, MD

Dr. Raymond Hubbard, a native Bostonian, graduated from Boston College and taught high school biology and chemistry in the Boston area for six years before earning his medical degree at Georgetown University. During medical school, he spent summers at the National Institutes of Health as a research fellow. Dr. Hubbard completed his pediatric residency at Strong Memorial Hospital University of Rochester,New York, where he served as chief of ambulatory pediatrics. He spent one year as cardiology fellow at the Children’s Hospital of Philadelphia. In the 25 plus years he has served the children of Berks County, he has worked in an advisory role for many county and state organizations, including PA Medical Home and Project Search. Dr. Hubbard continues to serve on the advisory board of MH/DD Berks County working to improve access to care for children with special needs, especially mental health needs. He is board certified most recently in 2014. He has two wonderful grown children and has been married to Sally since 1977.


Michael Sergi, MD

Dr. Michael Sergi was born in Cherry Hill, New Jersey and grew up working on his family’s farm. He attended Georgetown University and later Georgetown School of Medicine. In addition, he received his residency training at Children’s National Medical Center in Washington, D.C. Subsequently, he worked several years at the Ireland Army Community Hospital in Fort Knox, Kentucky. Dr. Sergi is board certified in pediatrics and is a Fellow of the American Academy of Pediatrics and is a member of the Berks County Medical Society. He and his wife, Dr. Tiffany Sergi, reside in Wyomissing with their two children. His interests include running, listening to music and golf.