If you're looking for a knowledgeable and approachable internal medicine physician in Tulsa, Dr. Benjamin Houston Greiner, D.O., M.P.H. at Warren Clinic Internal Medicine provides comprehensive care tailored to adult patients. Board-certified and trained at Oklahoma State University Center for Health Sciences, Dr. Greiner specializes in managing chronic conditions such as hypertension, diabetes, obesity, asthma, and seasonal allergies.