Dr. Rotbart has been a Pediatrics and Infectious Diseases specialist for the past 40 years. He received his M.D. degree from Cornell University. His internship and residency in Pediatrics were at the University of Pennsylvania/Children's Hospital of Philadelphia, followed by fellowship in Pediatric Infectious Diseases at the University of Colorado/Children's Hospital Colorado. Following fellowship, Dr. Rotbart joined the full-time faculty of the University of Colorado Department of Pediatrics and Children's Hospital Colorado, where he currently is Professor and Vice Chairman Emeritus of the Department of Pediatrics.

Dr. Rotbart was named to Best Doctors in America for 18 consecutive years, as well as receiving numerous other national awards for research, teaching, and clinical work. He is the author of nearly 200 medical and scientific publications.

Dr. Rotbart is also "Coach Harley," having coached youth baseball and basketball for more than 16 years, including 8 years coaching baseball at the high school level. His 2026 book, "101 Lessons from the Dugout – What Baseball and Softball Can Teach Us About the Game of Life," has been endorsed by baseball and softball greats like Hall of Famer Reggie Jackson, legendary New York Yankee Bernie Williams, and many others.

Dr. Rotbart is getting older, and his most recent book, "The Countdown – Cursive Is Dead and Other Realities of Aging," reflects on that experience with a lighthearted, insightful, and emotionally resonant look at the strange, funny, and surprisingly meaningful experience of growing older. The Countdown expands on the widely-read pieces on aging Dr. Rotbart has written for the New York Times and other publications.

Dr. Rotbart is a nationally-renowned parenting expert, pediatrician, speaker, and educator. His recent parenting books include No Regrets Parenting (Updated and Expanded Edition), Germ Proof Your Kids, The On Deck Circle of Life, No Regrets Parenting (First Edition), and his beautiful combination keepsake journal/family activities guide, 940 Saturdays. For nearly 7 years, Dr. Rotbart wrote a monthly column for Parents Magazine. He has served on the Advisory Boards of Parents Magazine, Parents.com, and Children's Health Magazine.

Expanding on Dr. Rotbart's "No Regrets" philosophy from parenting to the rest of our adult lives, his 2021 book "No Regrets Living - 7 Keys to a Life of Wonder and Contentment" is a proactive, 7-step plan to help us better appreciate what we have in our lives, and take greater pride in what we've done with our lives, without spending precious time and energy wishing things had turned out differently.

As physicians, occasionally in the course of caring for our patients we encounter events that truly stun us. Unforgettable occurrences that defy all of our predictions and expectations. The "Miracles Project" is a collection of these stories, medical miracles, written by leading doctors who witnessed them, physicians at the top of their fields. The project resulted in a remarkable bestselling book, "Miracles We Have Seen – America's Leading Physicians Share Stories They Can't Forget."

Dr. Rotbart has made hundreds of national and local media appearances.

Dr. Rotbart and his wife, Sara, live in Denver, Colorado and are the parents of 3 millennial-age kids and grandparents of 7, on whom he continues to practice what he preaches.