If you have any questions, concerns, or comments regarding The Diablo Dental Group, please fill out the short contact form below.
"My wife and I have been going to Dr. Johnston for several years now. She and her staff are always friendly and professional."
"I drive two hours to go to Dr. Jon Koeltl. I will never use or trust another dentist. He is the best!"
"I saw Dr. Koeltl for teeth whitening and highly recommend the whole team. The entire staff is friendly and the office is warm and inviting."
"Dentistry gets no better. I've been going to Dr. Johnston for 10 years. She explains what she's going to do at every step of the process."