2421 Ford St, Golden, CO 80401

Our Doctors

Jon Sierk

Dr. Jon Sierk

Dr. Jon Sierk joined our team in the Summer of 2014. He is a diplomat of the American Board of Pediatric Dentistry, and has been serving the children and families of Colorado since 2003. Jon graduated from Northwestern University in 1996 where he divided his time between studies and the varsity soccer team. He returned home to attend dental school and complete his pediatric dental residency at the University of Iowa College of Dentistry. Dr. Jon comes from a family of dentists, his father and two brothers also graduated from the University of Iowa College of Dentistry. Dr. Jon has participated in medial mission work in many locations. He is proud to have been named to “Denver’s Top Dentists” by 5280 magazine yearly since 2011. In his free time, he loves to travel and hike with his fiancée Stacey, golf, read, and cheer on the St. Louis Cardinals.







Dr. Nancy Chang

Dr. Nancy Chang was born in Taiwan but grew up in Newton, MA. She completed her undergraduate degree at Georgetown University in 2003 and graduated from the University of Pennsylvania School of Dental Medicine in 2009. She obtained an additional year of training at a General Practice Residency program at the Veteran's Affairs Medical Center in Washington, DC in 2010. Dr. Chang comes from a family of dentists including her grandfather, father, brother, and sister-in law. After practicing as a general dentist in Northern Virginia for six years, Dr. Chang decided she wanted to exclusively treat kids and pursued specialty training in pediatric dentistry from the Children's Hospital Colorado in 2017. She became a board certified pediatric dentist by the American Board of Pediatric Dentistry in 2018. Besides talking about teeth during family gatherings and making the dentist visit fun for kids, Dr. Chang enjoys hiking, cooking, yoga, trying new restaurants, and traveling as much as she can!



James Busch

Dr. James Busch

Dr. James Busch was born and raised in Pennsylvania. He completed his undergraduate degree at Wake Forest University in 2007. In 2013, he graduated from The University of Michigan School of Dentistry. He received his specialty training in pediatric dentistry from The University of Pittsburgh School of Dentistry in 2015. Dr. Busch is a board certified pediatric dentist. He has worked in private practice, not-for-profit, and hospital settings over the past 6 years. He and his wife, Lauren have an 18-month old baby girl who keeps them very busy. Dr. Busch loves to ski but enjoys most sports and anything outdoors. The family is happy to be in the beautiful state of Colorado.








Elizabeth Shick

Dr. Liz Shick

Dr. Elizabeth Shick completed her residency in Pediatric Dentistry and Masters of Public Health degrees from the University of North Carolina at Chapel Hill. After spending four years in a private practice, she moved to Denver to begin an academic career.  Dr. Liz has been a director of the Cavity-Free at Three Program and now serves as Director of Global Health Initiatives.  She is excited to join our team as she also continues to work at CU School of Dental Medicine as an instructor. She travels to Guatemala to treat the underserved as well. Dr. Liz enjoys time with her two children, hiking, snowboarding and traveling.










Dr. David Beebe

Originally from Delaware, Dr. Beebe had the privilege of attending the United States Naval Academy.  After graduating, he accepted a commission in the United States Marine Corps as a Second Lieutenant.  Later he attained the rank of Captain and served as company commander.  After serving in the USMC, he attended and graduated with distinction from the University Of North Carolina School Of Dentistry.  Following dental school, Dr. Beebe completed a three year orthodontic residency program at the University of Maryland.  He now loves life in Colorado with his 2 children.  He is an active runner, hiker and fan of P90x3. He enjoys quality time with his kids and coaching their many sports activities.