(270) 278-2385

Our Staff

Ralph W. Thacker DMD
Dr. Thacker received his Bachelor's of Science Degree from Murray State University in 1977 and his Doctor of Medical Dentistry Degree from the University of Louisville School of Dentistry in 1982. Following dental school graduation and marriage to his wife, Diane, he served as a dental officer in the United States Air Force Dental Corps at Minot Air Force Base, North Dakota from 1982 - 1985. Dr. Thacker began his private practice of general dentistry in Livermore in June of 1985. He and Diane have two children, Bryan and Stephanie, both of whom are graduates of McLean County High School, and are now pursuing their own careers.

Dr. Thacker is a long-standing member of the American Dental Association, Kentucky Dental Association, Green River Dental Society, and is also an associate member of the Chicago Dental Society. Yearly continuing education is a priority for Dr. Thacker as he is committed to providing state-of-the-art dental care for his patients.

Community Involvement
Dr. Thacker has been a monthly volunteer dentist at the Christian Dental Mission in Owensboro since it was established in 1996. The Mission provides free basic dental care to those with financial need. Diane serves along side him monthly at the Mission as a expanded duty DA and clinic coordinator.

Being an Eagle Scout himself, Dr. Thacker has been able to advance the adventure and values of Scouting to the youth of our area by serving as Scoutmaster of a Livermore area Boy Scout troop that he helped to charter in 1997 through the end of 2013. He now serves as Troop Master of the Trail Life USA Troop as of January 2014. Also chartered by his home church, Buck Creek Baptist.

Dr. Thacker has been a member of the McLean County Chamber of Commerce since 1985 and is a two-term past president. Founder and chairman of the Livermore Enhancement Foundation since 1993. Dr. Thacker has sought to improve the quality of life for others in Livermore and McLean County. Numerous committed citizens have worked side by side with him to make community improvements through the years.

  • Member of The American Academy of Dental Sleep Medicine
  • Member of a premier national study club on dental sleep medicine that provides ongoing training.

Tracy - Expanded Duty Dental Assistant
Tracy is a certified expanded duty dental assistant, trained at the University of Louisville in 2000. She is also certified in coronal polishing and radiation safety and serves as our office infection control director. Tracy has been an important part of our team since 2000. She strives to assist our patients and make them feel comfortable!

In addition Tracy serves as our office liason to the Schools and instructs children and older youth in oral health education and dental health careers.

Jennifer - Expanded Duty Dental Assistant
Jennifer is a certified expanded duty dental assistant, trained at the University of Louisville in the year 2004 and is also certified in coronal polishing and radiation safety. She is an accomplished artist when it comes to finishing the tooth-colored restorations for our patients. Jennifer joined our team in 2002 and is dedicated to quality dental care. She is here to assist you with your dental needs!

Diane Thacker - Office Coordinator
Diane is Dr. Thacker's wife and has been a part of the team since 1985. In 1980 she graduated from the University of Louisville, with an Expanded Duty Dental Assisting certificate and in 1984 graduated from Minot State University, with a degree in Business Management. Having been in the dental profession for the past 34 years, she has much experience as dental assistant, patient coordinator, office coordinator and accountant. She continues to enjoy serving the patients and working with a professionally trained staff! We all work well together and are determined to make your smile and overall health our number one concern. We look forward to seeing you soon!

Lori Doss, R.D.H.
Lori joined our dental care team in 2005. She graduated from Western Kentucky University in 2004 with a degree in dental hygiene and is certified to give local anesthesia. Lori brings her passion for comprehensive oral health care to all of our patients. She delivers service with a smile and a gentle touch.

Lynn - Recare Coordinator
Lynn's primary focus is to keep the patient up-to-date with their preventive recare visits. She understands the importance of regular dental exams, professional prophylaxis and oral cancer screenings to maintain optimum dental health and enjoys helping you achieve that goal. Lynn has been in dentistry for the past 30 years and is happy to be part of Dr. Thacker's team.