Dr. William I. Mariencheck, a well-known and respected pulmonologist with Mid-South Pulmonary & Sleep Specialists PC, has retired after practicing medicine for 56 years. Mariencheck is board certified by the American Board of Internal Medicine and specialized in internal medicine, pulmonary, sleep, and critical care medicine.

He earned a Bachelor of Science degree from the University of Tennessee, Knoxville, before enrolling at UTHSC. In addition, he did a pulmonary and environmental medicine residency at Duke University. He served in the United States Army from 1969 to 1971 as the chief of Allergy and Pulmonary Services and Internal Medicine at Ireland Army Hospital in Fort Knox, Kentucky. He is a former division chief and clinical associate professor of Pulmonary Medicine at UTHSC.

Dr. Mariencheck has been a practicing physician at Mid-South Pulmonary & Sleep Specialists, P.C. since January of 2006. We wish him a healthy and happy retirement. The footprint he has left in pulmonary medicine will last a lifetime.