755 South Perry, Suite 100
Castle Rock, CO 80104
303-688-8989 Office
303-688-3482 Fax

Small Town Caring, World Class Care

Our Staff:

  • Louis B. Kasunic, DO, FACOFP

    Dr. Kasunic is a graduate of Denison University (BS Chemistry), Case Western Reserve University (MS Chemistry), and The Ohio University College of Osteopathic Medicine. He is Board Certified in Family Medicine and is a Fellow of the American College of Osteopathic Family Physicians. He has practiced medicine in our community since 1987. Dr. Kasunic is the founder and Director of the Strong Heart Institute (located within Castle Rock Family Physicians); using cutting edge technology to help patients avoid heart attacks and stroke. He speaks nationally on a variety of medical topics and continues in his role as a clinical professor training medical students, interns, and resident physicians. He lives in Castle Rock with his wife, Wanda, and their three children where he enjoys coaching, reading, shooting and landscaping. He was voted "Best of the Best" Physician in Castle Rock by readers of Colorado Community Newspapers. Dr. Kasunic founded Castle Rock Family Physicians in 1992.


  • Chad E. Boekes, MD, FAAFP

    Dr. Boekes graduated from the University of North Dakota School of Medicine in 1995 and completed his Family Medicine Residency at St. Mary-Corwin Hospital in Pueblo, Colorado. Dr. Boekes enjoys the multiple aspects of Family Medicine and the prevention of disease. He continues to teach medical students in his role as clinical professor with the University of Colorado School of Medicine. He joined Castle Rock Family Physicians in 1998. He lives in Larkspur with his wife Margie and their 3 daughters. He is a pilot for single-engine aircraft and enjoys woodworking as a hobby.


  • Jessica N. Branson, PA-C

    Jessica is a graduate of the Baylor College of Medicine Physician Assistant Program in Houston, Texas. During her time there she acted as Vice President of her student organization and served with select classmates at a respite care program for teens with special needs. She is now a member of the Colorado Academy of Physician Assistants and the American Academy of Physician Assistants. She enjoys caring for patients of all ages with both chronic and acute disease. She is drawn to Family Medicine because it offers the opportunity to see her patients again and again. Having grown up in Durango, Colorado she enjoys all things outdoors including hiking, camping, and skiing, as well as baking and bookclub.


  • Kristine L. Beck, PA-C

    Kristine is a graduate of the University of Colorado Denver Anschutz Medical Campus, where she was a member of the Child Health Associate/Physician Assistant program. During her time with the program she acted as President of the CHA/PA student association and now is a member of the Colorado Academy of Physician Assistants and American Academy of Physician Assistants. As a provider, Kristine enjoys all aspects of family medicine with an emphasis on pediatric, adolescent, and women’s health. Kristine and her husband Jake live in Castle Rock. She enjoys cooking, soccer, reading novels, and collecting piggy banks.