Our Doctors

After growing up in a small town in West Texas, Dr Sims is finding Clarksville a natural fit.  His parents still own and operate the cattle ranch and farm he worked on as a kid, and he occasionally returns to help out when he can.  He knew he wanted to be a dentist at 17 years old, and to achieve that goal, he attended college at West Texas A&M and then graduated from Baylor College of Dentistry in 2005.  

Dr Sims spent the first 12 years of his career both practicing dentistry in Hendersonville TN, and teaching for the largest provider of dental services in the world.  After spending several years as Program Director for dentist education, he decided to slow down on traveling and focus on practicing dentistry and raising his 2 kids.  “I have always enjoyed giving back to the profession through teaching, and I hope to return to it someday.”  Dr Sims took over as the owner of Hillcrest Dental in 2018.  “I am thankful I get to carry on the legacy started here in 1983 by Dr. Garrett.”  During his spare time he enjoys playing sports with his kids as well as competing in triathlons and participating in CrossFit classes.

Dr. O’Rourke was born in Knoxville, Tennessee and graduated from Webb High School in 2008. After high school, Dr. O’Rourke attended The University of Tennessee in Knoxville and graduated with a Bachelors of Science in Biochemistry in 2012. Dr. O’Rourke then attended the Temple University Kornberg School of Dentistry in Philadelphia, Pennsylvania. Upon graduation he moved to Nashville to be closer to family and friends and began practicing at Hillcrest Dental.

Dr. O’Rourke continues to live in Nashville and enjoys attending Nashville sporting events and concerts, going out to eat with friends, and cheering on the Tennessee Volunteers! Since moving back to Tennessee he continues to love treating, helping, and caring for the great people of our great state.

I love having the ability to help the community of Clarksville as a dentist. After living here for several years, my goal is to provide the highest quality dental treatment to the patients of our community.”

Dr. Greene was born and raised in Southern California but was brought to Clarksville, TN to finish her military service as an Army Dentist. Dr. Greene was a member of the Dean’s List and received her Bachelors of Science in Psychological and Brain Sciences from Johns Hopkins University in Baltimore, Maryland. She then spent a year working in the research of respiratory diseases at Johns Hopkins Hospital Dept. of Infectious Diseases. She further attended dental school at University of Maryland School of Dentistry where she was a member of the Gammi Pi Delta Prosthodontic Honor Society, awarded the Steven Sokol Memorial Award, and selected for the U.S. Armed Services Health Professions Scholarship and a spot in the U.S. Army’s competitive Advanced Education in General Dentistry residency at Fort Campbell, KY. She served the dental needs of 11,000 soldiers while at Fort Campbell, KY, and Fort Bragg, NC in the 44th Medical Brigade, 257th Dental Company.