Emily Wolverton


Emily is a fourth year medical student at the University of Colorado. She has been involved with Helmet Heads since 2015 when she first participated as a volunteer. Her favorite moments with Helmet Heads are the presentations where she can engage students who are eager to read aloud and solve the riddles to decipher who all wears helmets. Emily is interested in rural medicine and hopes to end up working in a small town near the mountains. Outside of school, Emily enjoys almost anything outdoors from hiking and road biking to grass volleyball and skiing. She is passionate about making outdoor recreation accessible to all communities in a safe and affordable way.


Christian Clodfelder

Vice President


Christian Clodfelder is a third year medical student at Rocky Vista University pursuing a career in pediatrics. He first got started volunteering with Helmet Heads in 2017. Before medical school he worked as an EMT in Commerce City and in various pediatric emergency departments throughout the Denver Metro area. Education and safety are two of his passions and he hopes to continue to apply these to his future patients. Outside of medicine, Christian loves to spend his time exploring the mountains of Colorado. He also enjoys getting lost in fantasy and science fiction, and cooking and homebrewing with his family and friends.

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Talia Scott


Talia Scott is a third year medical student at the University of Colorado planning on a career in anesthesia. She was born and raised in Boulder, Colorado enjoying the breathtaking outdoors. She grew up with peers who suffered from head injuries during winter sports, leading her to care deeply about spreading the message of helmet safety. She graduated from the University of Colorado with a double major in Neuroscience and Molecular, Cellular, & Developmental Biology. As a former ballet teacher who is now studying medicine, she is passionate about the health care and education of kids. Her hobbies include ballet, yoga, drawing, and hiking with her puppy Tucker.

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Kristina Hulen, MD

Past ​President

Kristina Hulen is third year medical student at the University of Colorado, pursuing a career as a family medicine physician. She is a Colorado native and attended University of Colorado Boulder to complete her Bachelor of Arts in Integrative Physiology. In her pastime, she enjoys skiing, biking, climbing, and camping around Colorado. She is dedicated to health and access to physical recreation, and her prior experience includes research in neurodevelopment and volunteering for several adaptive sports companies in Boulder, CO. Kristina is committed to promoting helmet safety awareness and education so that younger generations can continue to play and explore the outdoors.

Sean Ribble


Sean Ribble is a Vice President of Commercial Banking with ANB Bank. Originally from Texas, Sean transitioned to Colorado in 2005 to attend Colorado State University, and is currently enrolled in the University Of Colorado Graduate School Of Banking Executive Development Program. Sean is passionate about utilizing his financial expertise to help organizations such as Helmet Heads positively impact local communities. A firm believer in generating greater awareness around the dangers and prevention of traumatic brain injuries, he is committed to helping Helmet Heads to continually grow and expand toward its long-term vision. In his free time, Sean enjoys back-country skiing, hiking, trail running, cycling, and all things outdoors.

Bruce Evans, M.D.


Dr. Evans is an Emergency Medicine physician with Kaiser and Saint Joseph Hospital.  He is a skier and snow-border who has seen, first-hand, how helmets save lives.  His interest in helmets and head injuries dates back to his days as a professional ski patroller.  As a teacher at the CU School of Medicine, he developed an evidenced-based review on the important benefits of safety helmets back in 2004; "Helmet Heads" was born!  Since that time, Dr. Evans, who was teaching Emergency Medicine as an Associate Professor at the University of Colorado when he developed the program, has helped Helmet Heads deliver over ten thousand bike/skate helmets to kids in the poorest communities across Denver-Metro front range.  He is pragmatic about Helmet Heads; he believes that saving even one child from a serious head injury will more than justify the efforts of the non-profit and all-volunteer team that makes up Helmet Heads.  Dr. Evans skis Mary Jane and Arapahoe Basin with his kids with his kids every chance he gets, and they always wear their ski helmets!

Former Board Members

Jennifer Larson

Miles Pimentel


Justin Hellwinkel, MD