Dr. Long is a board-certified and fellowship-trained colorectal surgeon. He obtained his medical degree from Virginia Commonwealth University and completed his residency at the same institute. Dr. Long completed his fellowship in colon and rectal surgery at Swedish Colon and Rectal Clinic. He is certified by the American Board of Colon and Rectal Surgery and the American Board of Surgery. Dr. Long is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Crohn's Disease, Ileostomy, and Colostomy.

Anthony T. Petrick, MD, FACS, FASMBS, is a board-certified general surgeon specializing in esophageal and bariatric surgery. Dr. Petrick performs a number of advanced and specialized surgical procedures including advanced endoscopy, revisional bariatric surgery, laparoscopic gastric band (or “lap band”), gastric bypass, biliopancreatic diversion with duodenal switch and gastric sleeve. He also treats people for various conditions affecting the stomach and gastrointestinal (GI) system, including hiatal and paraesophageal hernia, achalasia and acid reflux (GERD).|Board-certified in general surgery, Dr. Petrick earned his medical degree from Georgetown University in Washington, D.C. He completed general surgery residency at Georgetown University Medical Center in Washington, D.C. He then completed a fellowships in Surgical Oncology at and Beth Israel Deaconess Medical Center in Boston and in Bariatric and Foregut surgery at the University of Pittsburgh Medical Center.|For the past 18 years, Dr. Petrick served as program director for the Geisinger bariatric and foregut surgical fellowship. He now serves as associate program director, acting as a mentor to bariatric surgery fellows. Dr. Petrick has a strong commitment to research in bariatric and foregut surgery and has authored more than 100 articles. Currently, he serves as chief quality officer for inpatient services at Geisinger and Director of the Division of Bariatric and Foregut surgery.|Dr. Petrick is an active member of the Society of Gastrointestinal and Endoscopic Surgeons and a fellow of the American College of Surgeons and American Society of Metabolic and Bariatric Surgeons. He chairs to Data and Quality Committee for the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program and also serves as an editorial board member for the journal Surgical and Obesity-Related Diseases and a columnist for Bariatric Times.|In his free time, Dr. Petrick serves on the board of education at St. Joseph School in Danville. He also coaches the Susquehanna Valley Stampede varsity and junior varsity ice hockey teams.|Clinical Focus: Bariatric Surgery|If you’re a provider who’d like to refer a patient, call our 24/7 referral line at 800-332-8901 or visit www.emr-link.com. Dr. Petrick is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Obesity, Hiatal Hernia, Hernia, Gastric Bypass, and Endoscopy.

As director of colorectal surgery, Chris Buzas, DO, specializes in treating patients with colon, rectal and anal cancers as well as inflammatory bowel disease (including Crohn’s disease and ulcerative colitis). He also provides care for people with diverticulitis, various rectal conditions, hemorrhoids and pelvic floor disorders.|He has clinical expertise in complex re-operative colorectal surgeries as well as robotic, laparoscopic and open procedures. His advanced training includes trans-anal excisions, neurostimulation for fecal incontinence and colonoscopies.|Dr. Buzas is passionate about making a difference in his patients’ lives. “The thing I love most about my job is the ability to work alongside a great team dedicated to solving problems,” he says. “I enjoy seeing our patients out in the community, knowing we were able to help improve their quality of life.”|Dr. Buzas has a strong commitment to giving back to his community and improving access to care. He previously served as president of the Keystone Chapter of the American College of Surgeons as well as on the Board of Trustees for the Pennsylvania Medical Society. Dr. Buzas has also helped standardize rectal cancer care throughout the country as part of the National Accreditation Program for Rectal Cancer.|Dr. Buzas received the Teacher of the Year Award from the surgical residents at Geisinger Medical Center. He was also recognized by the Pennsylvania Medical Society as one of their Top Physicians Under 40.|When not at work, Dr. Buzas enjoys spending time with his wife and three children at their lakeside cabin in northern Pennsylvania.|Video: more from Dr. Christopher Buzas, D.O. Dr. Buzas is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Lynch Syndrome, Hernia Surgery, and Ileostomy.

Dr. Still is a board-certified and fellowship-trained specialist in nutrition and weight management. His clinical and research interests include malnutrition and comprehensive weight management. Dr. Still obtained his medical degree from the Philadelphia College of Osteopathic Medicine. He completed his residency and a fellowship in clinical nutrition at Geisinger Medical Center. Dr. Still is certified by the American Board of Internal Medicine.|Are weight loss medications right for you? Learn more from Dr. Still. Dr. Still is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Obesity, Malnutrition, Small Bowel Bacterial Overgrowth, Gastric Bypass, and Vagotomy.

Harshit S. Khara, MD, is an Interventional Gastroenterologist based at Geisinger Medical Center in Danville, PA.|Dr. Khara is an Associate Professor of Medicine at the Geisinger Commonwealth School of Medicine. He serves as the Director of Endoscopy; System Director of Interventional Endoscopy, Director of Endoscopic and Translational Research; Director of the Clinical Use Evaluation Committee; and System Director of Quality & Innovation. He is also the Research Director and Core faculty for the Gastroenterology Fellowship Program, as well as the Program Director for the Advanced Therapeutic Endoscopy Fellowship Program at the Center for Advanced Therapeutic Endoscopy at Geisinger, participating in the training and mentoring of advanced endoscopy and general gastroenterology fellows. Dr. Khara is also the Director of the National Pancreas Foundation Center at Geisinger.|He is involved in multi-center clinical research and quality improvement projects. Dr. Khara's clinical and research interests are in the field of interventional endoscopic ultrasound, ERCP, Barrett’s esophagus, third space endoscopy, endoscopic treatments for GERD, interventional EndoHepatology, and bariatric interventional endoscopy.|Dr. Khara earned his medical degree from Seth G.S. Medical College & K.E.M. Hospital in India then completed his Internal Medicine Residency at Drexel University College of Medicine-Saint Peter's University Hospital. He completed a Fellowship in Transplant Hepatology at the University of Nebraska Medical Center, a Fellowship in Gastroenterology at Yale University School of Medicine-Norwalk Hospital and a Fellowship in Advanced Therapeutic Endoscopy at Geisinger Medical Center.|Dr. Khara is certified in Gastroenterology by the American Board of Internal Medicine. Dr. Khara is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Pancreatic Pseudocyst, Gastroesophageal Reflux Disease (GERD), Barrett Esophagus, Endoscopy, and Gastric Bypass.

Dr. Widom is a board-certified and fellowship-trained general surgeon subspecializing in trauma. His clinical interests include acute care surgery and emergency general surgery. Dr. Widom attended the University of Maryland, where he received his medical degree, and completed his residency at Robert Wood Johnson University Hospital. He completed his fellowship in surgical critical care at the University of Maryland. Dr. Widom is certified by the American Board of Surgery in surgical critical care. Dr. Widom is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Chronic Subdural Hematoma, Subdural Hematoma, Delirium, Small Bowel Resection, and Hernia Surgery.

Dr. Confer is a board-certified and fellowship-trained gastroenterologist. His clinical interests include endoscopic ultrasound and endoscopic retrograde cholangiopancreatography (ERCP). Dr. Confer attended the Lake Erie College of Osteopathic Medicine, where he received his medical degree. He completed his residency, a fellowship in gastroenterology and hepatology, and a fellowship in advanced therapeutic endoscopy at the Cleveland Clinic Foundation. Dr. Confer is certified by the American Board of Internal Medicine in gastroenterology. Dr. Confer is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Gallbladder Disease, Benign Esophageal Stricture, Cholecystitis, Endoscopy, and Gallbladder Removal.

David M. Parker, MD, FACS, FASMBS, is a board-certified general surgeon specializing in bariatric surgery for both adolescents and adults. Dr. Parker performs several advanced and specialized surgical procedures, including gastric bypass, biliopancreatic diversion with duodenal switch, revisional bariatric surgery, laparoscopic gastric band (or “lap band”) and gastric sleeve. He also provides care for various conditions affecting the stomach and gastrointestinal (GI) system, including hiatal hernia, paraesophageal hernia, achalasia and acid reflux.|He has a clinical interest in minimally invasive laparoscopic and robotic surgery.|Board-certified in general surgery, Dr. Parker earned his medical degree from West Virginia University in Morgantown. He completed a general surgery residency at the Dwight D. Eisenhower Army Medical Center in Fort Gordon, GA, followed by a fellowship in bariatric and foregut surgery at Geisinger Medical Center in Danville.|While in medical school, he received the Presidential Award for Excellence in Scholarship. During his fellowship, he received the SAGES Award for best fellow presentation.|Dr. Parker serves as program director for the Geisinger bariatric and foregut surgical fellowship. He has a strong commitment to research in bariatric and foregut surgery and has authored more than 24 published articles.|He is an active member of the Society of Gastrointestinal and Endoscopic Surgeons and a fellow of the American College of Surgeons and American Society of Metabolic and Bariatric Surgeons.|Dr. Parker has served in the United States Army and continues to serve as a lieutenant colonel in the United States Army Reserve. He is also a football enthusiast, rooting for the West Virginia Mountaineers in his free time. Dr. Parker is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hiatal Hernia, Hernia, Obesity, Gastric Bypass, and Endoscopy.

Vladan Obradovic, MD, is a general surgeon specializing in bariatric surgery. Dr. Obradovic performs a number of advanced and specialized weight loss surgery procedures, including biliopancreatic diversion with duodenal switch, advanced endoscopy, revisional bariatric surgery, foregut surgery, laparoscopic gastric band (or “lap band”), gastric bypass and gastric sleeve.|Dr. Obradovic has a clinical interest in minimally invasive and robotic surgery.|Dr. Obradovic earned his medical degree from the University of Belgrade School of Medicine in Belgrade, Serbia. He completed residencies in general surgery at the Belgrade School of Medicine, and Health Centre Krusevac in Krusevac, Serbia, and digestive system and hepatobiliary surgery at the University Clinical Center of Belgrade. He then completed general surgery residency and fellowship in bariatric surgery at Geisinger Medical Center in Danville and a certification in robotic assisted surgery at Intuitive Surgical Headquarters in Sunnyvale, CA.|A resident of Danville, Dr. Obradovic is committed to serving his community by giving the best care he possibly can. He was inspired to pursue a career in medicine by his father, who was a physician.|In his spare time, he enjoys spending time with his family and friends and walking his dog. Dr. Obradovic is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hiatal Hernia, Obesity, Hernia, Gastric Bypass, and Endoscopy.

Dr. Hosterman is a board-certified and fellowship-trained specialist in nutrition and weight management. Her clinical interests include adult and pediatric malnutrition and comprehensive weight management. Dr. Hosterman attended the Philadelphia College of Osteopathic Medicine, where she received her medical degree. She completed her internal medicine – pediatric residency and then her weight management and nutrition fellowship at Geisinger Medical Center. Dr. Hosterman is certified by the American Board of Internal Medicine, the American Board of Pediatrics, the American Board of Obesity Medicine and the American Board of Physician Nutrition Specialists. Dr. Hosterman is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Malnutrition, Short Bowel Syndrome, Small Bowel Bacterial Overgrowth, and Protein Deficiency.

Clifford Akateh is a Transplant Surgeon in Danville, Pennsylvania. Dr. Akateh is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Banti's Syndrome, Bile Duct Cysts, Hepatic Ischemia, Liver Transplant, and Hepatectomy.

Harsh Grewal, MD, is a pediatric general surgeon. He specializes in pediatric general, thoracic and minimally invasive surgery. He also takes care of pediatric trauma patients. He has a special interest in minimally invasive surgery applications for access to the spine for children with scoliosis.|Dr. Grewal earned his medical degree from All India Institute of Medical Sciences in New Delhi. After medical school, he completed a General Surgery residency at New York Medical College, NY. He followed that with a fellowship in Pediatric Surgery at Arkansas Children’s Hospital in Little Rock, Ark. He is board certified in general surgery as well as pediatric surgery.|He serves as a journal reviewer for a number of clinical medicine publications. Dr. Grewal has also served as a medical educator, training future surgeons, and has applied for a patent for a medical device. He's had work published in numerous medical journals, books and other publications, and has presented his work at numerous conferences and symposiums around the United States and internationally.|Outside the office, Dr. Grewal enjoys traveling, trail running, hiking and trekking. Dr. Grewal is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Appendicitis, Hirschsprung Disease, Total Intestinal Aganglionosis, Appendectomy, and Spinal Fusion.

Dr. Semian is a board-certified general surgeon. His clinical interests include abdominal wall reconstruction, hernia, gallbladder and acute care. His research interests include acute care surgery and hernia surgery. Dr. Semian obtained his medical degree from Rutgers, the State University of New Jersey. He completed his residency at St. Barnabas Medical Center. Dr. Semian is certified by the American Board of Surgery. Dr. Semian is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hernia, Gallbladder Disease, Gallstones, Hernia Surgery, and Ileostomy.

Dr. Alaparthi is a board-certified and fellowship-trained general surgeon specializing in minimally invasive surgery. His clinical interests include abdominal wall reconstruction, hernias and robotics. His research interests include outcomes research in hernia surgery. Dr. Alaparthi earned his medical degree from J.J.M. Medical College, Davangere in India. He then moved to the United States to complete his residency at Howard University Hospital. He completed his fellowship in minimally invasive surgery at Geisinger Medical Center. Dr. Alaparthi is certified by the American Board of Surgery. He speaks English and Telugu. Dr. Alaparthi is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hernia, Protein Deficiency, Malnutrition, Hernia Surgery, and Gallbladder Removal.

Alakananda Chakrabarty is a primary care provider, practicing in Internal Medicine in Coal Township, Pennsylvania. Dr. Chakrabarty is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Polycythemia Vera, Peptic Ulcer, End-Stage Renal Disease (ESRD), and Maturity Onset Diabetes of the Young.

Christopher Motto is a General Surgeon and a Bariatric Medicine provider in Lewisburg, Pennsylvania. Dr. Motto is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Familial Colorectal Cancer, Hernia, Gallbladder Disease, Hernia Surgery, and Pacemaker Implantation.

Jon Gabrielsen is a General Surgeon in Lewisburg, Pennsylvania. Dr. Gabrielsen is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hiatal Hernia, Hernia, Achalasia, Gastric Bypass, and Gallbladder Removal.