of St. Louis, MO, passed away on September 4, 2025, after complications from cancer. He was born on March 4, 1979, in West Bend, WI. He devoted his life to learning, teaching, and caring for others. After earning his doctorate in Psychology from Kansas City, Chad established a private practice in St. Louis, where he was known for his compassion and dedication to his patients. He also shared his knowledge as a professor at Lewis & Clark Community College.

Beyond his professional accomplishments, Chad demonstrated resilience and will be remembered for his kindness, sharp wit, and the way he encouraged others to reach their fullest potential. He was a beloved son, brother, uncle, and friend whose presence touched many lives.

Chad was preceded in death by his father, Harlu Keller, and his grandparents Harvey and Luetta Keller, and Francis Schmidt. He is survived by his mother, Karen Keller; his sister, Michelle (Scott) Knaffla, and their children, Mikayla and Mason Knaffla; and his sister, Raquel (Jeremy) Frommelt, and their children, Isabell and Abigail Frommelt. Chad is also survived by many close friends.

A private family service will be held to celebrate his life.