Dr. Cluff received his Medical Doctor (M.D.) degree at the Texas Tech University School of Medicine in Lubbock, Texas, and did his Family Medicine Residency at the University of Texas Medical Branch in Conroe, Texas. Prior to medical school he performed genetic and immunological research at Baylor University Medical Center in Dallas, Texas.  

Prior to starting TLC Family Health, he spent 16 years in a busy 3-person Family Medicine practice in Irving, Texas. He founded a lifestyle and weight management program called SLIM TLC, and a non-profit organization called Project Simplify Health, whose prime directive is to make it easier to eat healthily. He recently founded Keep Flower Mound Healthy. He is also working on starting his own healthy restaurant, WHOLi KaBOWLi!, and writing another book, How Not to Get Sick. 

Dr. Cluff is a member of the American Academy of Family Physicians, Texas Medical Association, and Dallas County Medical Society. Dr. Cluff is Board Certified by the American Board of Family Medicine (ABFM).

He enjoys the wonderful relationships he develops with his patients and enjoys taking care of both individuals and entire families. He has interests in pediatrics and adolescent health, thyroid disorders, sports injuries, preventive medicine, women’s health, dermatology, minor office procedures, and lifestyle/weight management.

Dr. Cluff’s hobbies include entrepreneurship, sports, writing, playing piano, singing, watching movies, and spending time with his wife, Sandra, and six children, ages 13-25 (and two sons-in-law, ages 25 & 27, and one granddaughter, born 6-26-18). He is expecting two additional grandchildren this summer! He is also fluent in Spanish.