Dr. Michael O'brien

"Michael Schweitzer, M.D., developed the laparoscopic bariatric surgery programs at the Medical College of Virginia (one of the first ten laparoscopic gastric bypass programs in the country), Georgetown University, Sinai Hospital of Baltimore and the Johns Hopkins University. Dr. Schweitzer was the first surgeon in the mid-Atlantic area to perform laparoscopic Roux-en-Y gastric bypass and the first in Maryland to perform laparoscopic adjustable gastric band surgery and laparoscopic duodenal switch with biliopancreatic diversion. Currently chair of the membership committee for the American Society of Bariatric Surgeons, Dr. Schweitzer also serves as a site inspector for the American College of Surgeons Bariatric Center of Excellence Program. He serves on three editorial boards: the Journal of Laparoendoscopic and Advanced Surgical Techniques, Surgery for Obesity and Related Diseases the official journal of the American Society of Bariatric Surgeons) and Bariatric Times. Dr. Schweitzer was the first to ever publish a technique for endoscopic stoma reduction using transoral endoscopic suturing. A great deal of attention is focused on the future of transoral surgery to avoid abdominal incisions for routine surgery (""No-Scar Surgery""). Dr. Schweitzer is one of the first to apply this technology to bariatric patients. A writer of numerous papers, chapters and review articles on bariatric surgery, several of Dr. Schweitzer''s laparoscopic bariatric surgical techniques have been featured in the American College of Surgeons Cine Video Series. He is considered an international expert on venous thromboembolic complications after bariatric surgery and has one of the lowest complication rates documented in world surgical literature. Dr. Schweitzer currently has an extremely active laparoscopic bariatric practice that includes laparoscopic Roux-en-Y gastric bypass, laparoscopic adjustable gastric band, laparoscopic sleeve gastrectomy, laparoscopic duodenal switch with biliopancreatic diversion, and revision of previous surgery. The team at the Johns Hopkins Center for Bariatric Surgery has successfully completed over 2500 bariatric procedures.". Dr. Schweitzer is highly rated in 5 conditions, according to our data. His top areas of expertise are Obesity, Hernia, Gastroesophageal Reflux Disease (GERD), Gastric Bypass, and Gastrectomy.

Ann Rogers is a Bariatric Medicine provider in Hershey, Pennsylvania. Dr. Rogers is highly rated in 6 conditions, according to our data. Her top areas of expertise are Obesity, Hernia, Gastrointestinal Fistula, Gastric Bypass, and Sleeve Gastrectomy.

Lawrence J. Cheskin, MD, FACP, FTOS, is now an adjunct professor of gastroenterology and general internal medicine at the Johns Hopkins School of Medicine. Since 2019, he has also been a professor (and chair from 2019 to 2024) of Nutrition and Food Studies in the College of Public Health at George Mason University in Fairfax, VA. In his research, Dr. Cheskin studies the effectiveness of various lifestyle and dietary changes in weight loss and weight maintenance. He has experience in the design and implementation of controlled clinical trials and laboratory studies of different dietary techniques, as well as individual and community-based interventions, including those targeting underserved residents of inner-city and suburban Baltimore. His background and experience are broad, ranging from basic science work on dopamine genetics to efforts aimed at preventing childhood obesity through systems-focused studies of the effects of policies and the built environment. Most recently, he has been studying health risk factors among young adult college students and the utility of mHealth in positively influencing diet and weight control. He has written approximately 250 peer-reviewed publications and 9 books and is frequently cited in the media on issues related to obesity, nutrition, and dieting. Dr. Cheskin is highly rated in 1 condition, according to our data. His top areas of expertise are Obesity, Gastroesophageal Reflux Disease (GERD), Malnutrition, Liver Embolization, and Endoscopy.