Specialist is general and bariatric surgery, all minimally invasive methods. Senior general surgeon and head of bariatric surgery. (301) 477-2000 info@mauamd.com. Navin C. Shah, MD. Navin C. Shah, MD. Dr. Navin C. Shah is a Diplomate of the American Board of Urology as well as a Diplomate of the American Board of Quality Assurance and ....