Bariatric physician: A physician practicing bariatrics, the sector of medicine study that is concerned with weight loss. Also called a bariatrician. The terms are used interchangeably, and either are accepted. The American Society of Bariatric Physicians says that: “There are guidelines that provide suggestions for the first and following visits of the bariatric patient. The guidelines aren’t meant to exchange, and indeed cannot replace, the bariatrician’s judgment regarding a specific patient’s treatment.” A bariatric physician is a licensed Doctor of Medicine (MD), or Doctor of Osteopathy (DO), who specializes in medical weight management. Weight loss can be treated by Bariatric physicians. Bariatric physicians most often treat their patients with a good nutritional diet, physical activity, behavioral therapy, appropriate medications and or many of those treatments combined. A weight loss surgeon may be a medical doctor who is trained in surgical methods that address obesity. If you are thinking about weight loss surgery, you ought to speak to a bariatric surgeon to help you prep for surgery by helping you lose weight, controlling your blood sugar levels and blood pressure before your surgery.