Meet Our Colorectal Surgery Team
William Adamson, M.D.
Pediatric General Surgery
Dr. Adamson is a pediatric surgeon at Johns Hopkins All Children’s Hospital. He will also be part of the general surgery team at Tampa General Hospital and HCA Florida Brandon Hospital as part of a collaboration with Johns Hopkins All Children’s Hospital. He joined the hospital staff in 2023. His clinical interests in pediatric general surgery are broad, with a particular interest in colorectal surgery, newborn surgery and chest wall malformations. In his practice, he emphasizes minimally invasive surgery, including abdominal gastrointestinal procedures and repair of pectus excavatum. Throughout his career, he has championed surgical quality and efficiency.
Nicole Chandler, M.D.
Pediatric General Surgery
Dr. Chandler is chief of the Division of Pediatric Surgery and the Pediatric Surgery Fellowship Program Director at Johns Hopkins All Children’s Hospital. She joined the medical staff in 2008, became interim chief in 2020 and was named full-time chief in 2021. She also is an associate professor of Surgery at the Johns Hopkins School of Medicine. Dr. Chandler’s clinical and research areas of interest are minimally invasive surgery including pectus excavatum, and pediatric cancer surgery. She is a member of the American College of Surgeons. Dr. Chandler was named Johns Hopkins All Children’s Hospital physician of the year in the 2017 Johns Hopkins Medicine Clinical Excellence Awards.
Henry Chang, M.D.
Pediatric General Surgery
Dr. Chang is a pediatric surgeon and Surgical Critical Care Fellowship Program Director at Johns Hopkins All Children’s Hospital. His clinical focus includes minimally invasive surgery and colorectal conditions. He is also an assistant professor at Johns Hopkins University School of Medicine. He is a key member of the pediatric surgery service at Tampa General and Brandon Regional hospitals. Dr. Chang earned his medical degree at the University of Mississippi School of Medicine. He completed his general surgery residency at University of Mississippi Medical Center and four fellowships: Pediatric Surgical Research at Surgical Research Laboratories Massachusetts General Hospital/Harvard Medical School and Clinical Research, Surgical Critical Care and Pediatric Surgery at Children’s Hospital of Wisconsin.
Paul Danielson, M.D.
Pediatric General Surgery
Dr. Danielson is associate dean of clinical affairs at Johns Hopkins All Children’s Hospital. Dr. Danielson also began serving as president of All Children’s Specialty Physicians (ACSP) in 2023, first on an interim basis and then permanently. A clinical professor of surgery, he has chaired the Johns Hopkins All Children's Department of Surgery since 2020 and was interim chair from 2018 to 2020. He specializes in general surgery and was an early adopter of minimally invasive surgical techniques, developing expertise in treating chest wall deformities. Dr. Danielson founded the first fellowship sponsored by Johns Hopkins All Children’s Hospital in pediatric surgery and was also instrumental in bringing the National Quality Improvement in Surgery Program to the institution. He was named Johns Hopkins All Children’s Hospital physician of the year in the 2015 Johns Hopkins Medicine Clinical Awards. He joined the hospital staff in 2008.
Raquel Gonzalez, M.D.
Pediatric General Surgery
Dr. Gonzalez is a pediatric and surgical critical care surgeon at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2017. She was previously the surgical critical care fellowship program director at the Detroit Medical Center and also served as a member of the American Pediatric Surgical Association Surgical Critical Care Committee. Dr. Gonzalez received her medical degree from the University Of Puerto Rico School Of Medicine and trained in general surgery at Saint Barnabas Medical Center in Livingston, New Jersey. Dr. Gonzalez then completed a surgical critical care fellowship at University of Michigan Health Systems & CS Mott Children’s Hospital and a pediatric surgery fellowship at the Children’s Hospital of Michigan.
Amanda Harrington, M.D., M.P.H.
Pediatric General Surgery
Dr. Harrington specializes in pediatric surgery at Johns Hopkins All Children’s Hospital. She sees patients at the hospital’s main campus in St. Petersburg, Florida, and at Tampa General Hospital and HCA Florida Brandon Hospital as part of a collaboration with Johns Hopkins All Children’s. She joined the hospital staff in 2023. She earned her medical degree from New York University Grossman School of Medicine in New York. She completed a surgery residency and served as chief resident at Yale New Haven Hospital in Connecticut. She then completed a surgical critical care fellowship and research fellowship at Boston Children’s Hospital, followed by a pediatric surgery fellowship at Rady Children’s Hospital-San Diego. Dr. Harrington’s research interests include nutrition and growth outcomes, and clinical interests include intestinal rehabilitation.
Christopher Snyder, M.D., M.S.P.H.
Pediatric General Surgery
Dr. Snyder is a pediatric surgeon at Johns Hopkins All Children’s Hospital. He is the director of the pediatric surgery research program and the medical director of the pediatric trauma program at the Johns Hopkins All Children’s Hospital. He joined the medical staff in 2018. Dr. Snyder previously served as a staff surgeon in the U.S. Air Force, performing general, trauma and acute care surgery for adults and children. In conjunction with his military service, he has held adjunct clinical faculty positions with the University of Washington, Pacific Northwest University of Health Sciences, and the University of South Florida. He received an honorable discharge in 2016. Dr. Snyder’s clinical and research interests include neonatal thoracic and gastrointestinal surgery, comparative outcomes research, pediatric trauma systems, minimally invasive surgical techniques, and extracorporeal membrane oxygenation (ECMO).
Keith Thatch, M.D.
Pediatric General Surgery
Dr. Thatch specializes in pediatric surgery at Johns Hopkins All Children’s Hospital and is certified in surgery, pediatric surgery and surgical critical care. He joined the hospital staff in 2018. He serves as the Associate Program Director of the pediatric surgical critical care fellowship program, and leads the American College of Surgeons' Level 1 Pediatric Trauma Program at Tampa General Hospital. Dr. Thatch earned his medical degree from Drexel University College of Medicine in Philadelphia. He completed a pediatric surgery research fellowship at St. Christopher’s Hospital for Children in Philadelphia and completed his general surgery residency at Georgetown University Hospital in Washington, D.C. He also completed a fellowship in pediatric surgery critical care and served as a pediatric surgery intensivist at C. S. Mott Children’s Hospital/University of Michigan. Dr. Thatch then completed a pediatric surgery fellowship at St. Christopher’s Hospital for Children.
