Douglas Family Medicine

1189 S. Perry St. Suite 230
Castle Rock, CO 80104
303-688-3434

"Putting the 'Care' Back Into Healthcare"

Our Doctors

Doctor Douglas Hallmark

B. Douglas Hallmark, MD Family Medicine

Dr. Hallmark grew up in Colorado and graduated from Arapahoe High School in 1970. He graduated Magna cum Laude with a degree in Chemistry from Baylor University. He received his medical degree from UTMB Galveston in 1979 and practiced in East Texas for 10 years. His life-long desire was to be a small town family doctor who not only served his patients but developed close relationships with them. He has achieved this goal in his practice of medicine in Castle Rock for the past 20 years. He and his wife, Marie, have been married for 31 years and have six children and one grandson.


Doctor Larry Odekirk

Larry L. Odekirk, DO Family Medicine

Dr. Odekirk received his Bachelors degree from the University of Missouri-Kansas City and earned his doctorate from Kansas City University of Medicine and Biosciences. Shortly after receiving his doctor of osteopathic medicine (DO), he moved to Denver and founded the Mile High Primary Care Group where he served for 39 years. In addition to his own practice, he has been Chief of staff at two hospitals, served as a ship's physician for Holland American Lines and was president of two medical societies throughout his career. Now he is practicing at Douglas Family Medicine and enjoys Family Practice and Adult Healthcare. Dr. Odekirk and his wife have two children. When not in the office, he enjoys being active through golf and skiing, and he currently serves as an elder in his church.


Castle Rock Family PA Evelyn Missy Sdrulla

Evelyn "Missy" Sdrulla, PA-C

Physician Assistant Missy Sdrulla grew up in Laramie, Wyoming. She attended college at Colorado College, where she earned her Bachelor degree. She later received her PA degree from Touro Health Sciences Center where she graduated cum laude. She has been practicing internal medicine and family care for the past 15 years where she enjoys developing a true relationship with her patients. Missy and her husband, Dan, have two children. In her spare time, she enjoys spending time with her family, training her horse, watercolor painting and staying in shape.


Castle Rock Family Nurse Practioner Gina Bertini

Gina Bertini, FNP-C

Gina Bertini graduated summa cum laude from the University of Colorado with a Master's Degree in Nursing, Family Nurse Practitioner. Her philosophy of care is that chronic disease can be prevented in most cases and prevention is the key to optimal wellbeing. Gina respects a patient's views regarding their health and works together as a team with the patient to formulate care plans and achieve optimal outcomes. She treats patients of all ages focusing on preventative medicine and acute and chronic diseases. Gina has three grown, married children and one granddog and is looking forward to grandchildren that she can spoil rotten. She enjoys hiking, biking, cooking, and experiencing all of the wonders of Colorado in her free time.