Boonslick Medical Group in St. Peters is a private practice physicians' office made up of three doctors. Dr. Gary Meltz is an internal medicine specialist with more than 30 years of experience and is an ACP,AMA, and ASIM member. Dr. Matthew Nissing practices gastroenterology and internal medicine in the office, has more than 10 years' experience and is board-certified by the American Board of Internal Medicine. Dr. John Vernon practices internal medicine in also and has more than 10 years' experience as well. The office is accepting new patients.