G. Shelton McMullan, MD

A practicing physician since 1982, Dr. Chasen particularly enjoys the clinical practice of Gastroenterology because it has allowed him to develop long-term relationships with his patients. In addition to his clinical practice, he has served as Chief of Medicine and Assistant Chief of Medicine at Laurel Regional Hospital and Washington Adventist Hospital. He was also the founder and Principal Investigator of the Maryland Digestive Disease research program where, along with his partners, he performed over 100 research trials for new therapies for Gastrointestinal and Liver disorders.

A Maryland native and graduate of the University of Maryland, Jeffrey Bernstein, MD went on to pursue his medical degree at The George Washington University School of Medicine and Health Sciences. Although his years of practice have returned considerable expertise in endoscopy and management of the broad scope of gastroenterological disorders, it is the patient interactions that he has found the most rewarding.

A Potomac, MD native, Dr. Darryn Potosky is board certified in gastroenterology and hepatology. He received his undergraduate degree from the University of Maryland College Park and his medical degree from the University Of Maryland School of Medicine in Baltimore. He was recently named one of the area’s top doctors under 40 by Baltimore Sun magazine.