Dr. Don G. Nelson specialized in Internal Medicine and pulmonology for 60 years. He graduated from the University of Illinois College of Medicine in 1965. Don became affiliated in Oklahoma with multiple hospitals including Hillcrest Hospital South, St. Francis Hospital, and the Veteran Affairs Hospital in Muskogee.

He was born in Moline, Illinois, where he graduated Moline High School and then the University of Illinois. 

In 1973 he moved to Tulsa, Oklahoma, and was first associated with Springer Clinic.

In addition to his medical career, Dr. Nelson became a triathlete and participated in three hundred Triathlons. His first triathlon was the first Hillcrest Ultimate Challenge. He was one of the pioneers of the sport in the Tulsa area and traveled to many countries while competing in World Championship events.

Listen to Dr. Don Nelson talk about his love for the medical profession, his triathlon experience, and his advice for everyone, regardless of their age, to exercise for good health on the oral history website and podcast VoicesOfOklahoma.com.