Dr. Kranz was born and raised in Louisville, Kentucky. He attended Vanderbilt University and graduated from the University of Louisville. Following graduation, he attended Southern College of Optometry, Memphis, Tennessee.
After receiving his doctorate degree in 1971, he moved to Atlanta where he began practicing optometry. He currently practices in southwest Atlanta at the same location. He lives in Atlanta with his family. Dr. Kranz enjoys scuba diving, but his real passion is spending time with his four grandchildren.