- Date Of Birth: April 10, 1948
- Date Of Death: March 14, 2020
- State: Iowa
Dr. John Cornelius Heffernan, 71, passed away Saturday, March 14, 2020. John was born April 10, 1948, in Sioux City, IA to John and Bernice (DeRoin) Heffernan. He married Karen (Hof) Heffernan on August 10, 1980, in Maquoketa, IA.
He was beloved by his patients and staff. He was a mentor to several physicians, and fellow physicians thought highly of him and sought him out for advice. John began his career in 1989 at Penn Medical. He served as Chief of Staff of Iowa Lutheran Hospital in 1995 and again in 2010. He served on the ILH Medical Executive committee for several years. He received his degree in Medicine from Ross University School of Medicine and the University of Iowa School of Pharmacy prior to this.
John is survived by his wife, Karen Heffernan; children, Kimberly Heffernan of Des Moines and Michael J. (Tiffany) Heffernan of Austin, TX; grandchildren, Taylor Heffernan and Mackenzie Heffernan; brother, Joseph Heffernan of California; nephews, Dr. Eric (Sara) Peterson of Sioux Falls, SD and Andrew Peterson of Sioux City, IA; and niece, Dr. Katie (Eldon) Bensen of South Sioux City, NE. He was preceded in death by his parents and sister, Barbara Peterson.
