Meet Our Team
Born in New York, Dr. Koeltl grew up in Saratoga with his older sister and younger brother. He attended the Fairleigh Dickinson University in New Jersey, where he received his undergraduate degree in Biology, and he earned his D.D.S. degree from New York University.

Dr. Koeltl is dedicated to using to the latest advancements in dentistry and keeps up-to-date with the latest technologies. He states that, “We try to make all of our patients feel as comfortable as possible, which is why we embrace a patient and family-centered care philosophy”.

Prior to launching his cosmetic dental practice in Blackhawk Plaza, Dr. Koeltl completed hundreds of hours of courses in postgraduate dentistry, and worked for a large dental practice in Milpitas, California, where he concentrated on keeping his patients healthy and happy.

Dr. Koeltl has over 15 years of experience as a family dentist and has extensive training in treating people of all ages. He completed a mini-residency at UCLA in the diagnosis and treatment of sleep apnea. He also completed courses in the Advanced Concepts Of Cosmetic Dentistry at the Northern California Institute of Cosmetic Dentistry, as well as numerous classes at the Las Vegas Institute for Advanced Dental Studies.

When Dr. Koeltl is not practicing his passion of cosmetic dentistry, he spends most of his time with his family, his wife Janine, & daughters Reganne, Riley, and Addison. He enjoys golf, coaching basketball and spending time with his family at their cabin in the Sierra mountains.

  • Bachelor of Science – Fairleigh Dickinson University
  • Doctor of Dental Surgery- New York University
  • Member of the- Seattle Study Club


Meet Our Team

Our RK Dentistry team is very experienced and has served this area for several years. Like Dr. Richard J. Koeltl, we look forward to welcoming you into our dental family when you come see our dentist in Danville, California!

Tracey – RDAEF/Practice Manager
Tracey is honored to go to work every day to do something she loves, creating special connections while contributing to the wellbeing of others. She has worked with RK Dentistry for over four years, but has worked in the dental field since 1993. After receiving her RDA, she attended UCSF School of Dentistry to earn her expanded functions degree. Tracey is married to her husband, Lance, and has two boys, Jase and Cole. She enjoys cooking, gardening, watching her boys play soccer and baseball, and spending time at the family cabin.

Diana – RDH
Diana and her family first entered our office as patients of Dr. Richard J. Koeltl. She then joined our team in April of 2005 as a front office assistant, and then a dental assistant, before attending Carrington College in San Jose to become a dental hygienist. Diana always puts our patients’ health first by actively perusing continuing education to allow for the highest caliber of patient care. She is always a team player, and is glad to be part of a practice that makes her proud to be a dental healthcare provider. Her hobbies include music, concerts, family time, and staying in with two of the best dogs ever.

Stacy – RDH
Stacy has been with RK Dentistry for over 12 years and has worked in the dental field for over 18 years. She was an assistant before becoming a hygienist. Stacy graduated from San Joaquin Valley College in 2003 with her AAS in dental hygiene, and she is an active member of ADHA. She loves the fact that she can educate patients on their health and help them create a plan to maintain or improve their dental and general health. She also greatly admires Dr. Richard J. Koeltl’s efforts to remain on the cutting edge of dentistry and the team’s efforts to achieve excellence. Stacy is constantly learning new dentistry philosophies to expand her knowledge and skills. She is married with two young sons, and her family lives locally. Her other interests include cooking, crafting, volunteering at her sons’ school, and being a member of the PTA.

Johanna – RDH
Johanna loves serving patients and being a part of the team. Since July of 2009, she has worked hard to keep our patients happy at each visit and provide thorough care. Johanna and her husband have two boys, ages four and one. Her interests include snowboarding and camping.

Janée – RDH
Janée has been a RK Dentistry team member since May of 2008. She takes a genuine interest in our patients’ lives and loves hearing about their families. Her main duties include thorough dental cleanings, helping patients improve their oral health, and working hard to ensure our patients’ needs are met. She graduated from Chabot College in 1996 with a degree in dental hygiene, but has been learning dental care for years from her family’s background in dentistry. Janée loves spending time with her husband, son, and three dogs. Her other hobbies are camping, walking her dogs, and cooking.

Lisa – RDH
Lisa has been with our team for 11 years. She graduated from Chabot Dental Hygiene School 14 years ago, in 2003. Lisa provides gentle, calm, and thorough dental hygiene care, and loves helping our patients learn more about their oral health and at-home dental care. Her favorite part of our practice is the friendly, relaxed environment that helps our patients feel like patients and not just another number.

Lisa and her husband of 13 years have two sons, ages 6 and 4. She loves spending time with her family, exercising, hiking, and travelling.