Be Astonishing

Sam Silverstein is founder and CEO of The Accountability Institute™ and the creator of the Certified Accountability Advisor™ designation. Sam’s mission is to build a more accountable world. He is the author of several books, including No More Excuses, Non-Negotiable, No Matter What, The Success Model, Making Accountable Decisions, The Lost Commandments, I Am Accountable, and The Theory of Accountability. Sam speaks internationally and works with teams from companies, government agencies, communities, and organizations both big and small to build workplace cultures that inspire and prioritize accountability. His clients include PetSmart, Kraft Foods, Pfizer, the United States Air Force, and United Way. Sam is the past president of the National Speakers Association and has been inducted into the Speakers Hall of Fame.

Dr. Allison Silverstein is a Pediatric Palliative Medicine Physician at the University of Colorado and Children’s Hospital Colorado, where she serves as the Inpatient Medical Director and Physician Informaticist for the Section of Palliative Medicine. A graduate of esteemed training programs at Texas Children’s Hospital in Houston and St. Jude Children’s Research Hospital/Le Bonheur Children’s Hospital in Memphis, she brings a powerful combination of clinical excellence, academic depth, and compassionate leadership to her work.

Currently serving as Chair of the Pediatrics Council for the American Academy of Hospice and Palliative Medicine, Dr. Silverstein is recognized as a national leader in pediatric care. Her commitment to global health led her to spend two years serving in sub-Saharan Africa, and she further expanded her impact through earning an Executive MBA in Health Administration from the University of Colorado.

Whether caring for children and families at the most vulnerable moments or leading systemic improvements in healthcare, Allison’s work is grounded in empathy, presence, and purpose—core traits that align deeply with the message of Be Astonishing. Her medical experience has taught her how to listen deeply, act intentionally, and show up fully for others—qualities that inspire those around her to do the same.

Outside the hospital, Allison finds joy in the outdoors—whether running, hiking, or skiing—and treasures the moments that bring balance and reflection.

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