Dr. Justin D. Rosenberger

James Ryan is a Bariatric Medicine provider in York, Pennsylvania. Dr. Ryan is rated as an Advanced provider by MediFind in the treatment of Short Bowel Syndrome. His top areas of expertise are Short Bowel Syndrome, Malnutrition, Obesity, Sleeve Gastrectomy, and Gastrectomy.

Faiz Shariff is a Bariatric Medicine provider in York, Pennsylvania. Dr. Shariff is rated as an Experienced provider by MediFind in the treatment of Short Bowel Syndrome. Her top areas of expertise are Short Bowel Syndrome, Malnutrition, Obesity, Sleeve Gastrectomy, and Gastrectomy.

Osama Shaheen, MD, is a general surgeon specializing in bariatric and foregut surgery. He performs a variety of surgical treatments for adults, including Nissen/Toupet fundoplication, Heller myotomy, laparoscopic hiatal hernia repair, LINX procedure, Roux-en-Y gastric bypass (RYGB), gastric sleeve, duodenal switch, single anastomosis duodeno–ileal bypass with sleeve gastrectomy, (SADI-S) and revisional bariatric surgery.|Dr. Shaheen attended Damascus University in Damascus, Syria, where he earned his medical degree. After medical school, he completed a residency at Damascus University Hospital. He followed that with a fellowship in multi-organ abdominal transplant surgery and a residency in general surgery, both at Thomas Jefferson University Hospital in Philadelphia. He also completed a fellowship in bariatric and advanced minimally invasive surgery with the Advanced Laparoscopic Surgery Associates (ALSA) Medical Group in Fresno, California.|He’s received several Excellence in Teaching Awards during his residency and fellowships.|He and his wife Latifa moved to the area in 2023. “I decided to move to Geisinger, a healthcare system known for its superior quality,” he notes. Dr. Shaheen is rated as an Experienced provider by MediFind in the treatment of Short Bowel Syndrome. His top areas of expertise are Short Bowel Syndrome, Malnutrition, Obesity, Gastrectomy, and Gastric Bypass.