Thomas M. Kiefer, DMD

Thomas KieferDr. Thomas Kiefer graduated from the University of Pennsylvania School of Dental Medicine in 1983 after earning his biology of science degree from Syracuse University in 1979. Since graduating from dental school, Dr. Kiefer has regularly taken courses to remain current with the newest dental technologies. He has received extensive training in implantology, as well as advanced training in the Ögram Oral Surgery system. Dr. Kiefer has proudly practiced dentistry in our community for ten years, and he is a member of the Academy of General Dentistry (AGD), the Florida Dental Association (FDA), and International Team for Implantology (ITI).

Dr. Kiefer strives to educate his patients and to help them repair and maintain their smiles. He is also committed to educating patients on how to maintain dental health for the rest of their lives. Dr. Kiefer has practiced dentistry in the Northeastern United States (in two locations), in the military (as part of the US Air Force at Patrick Air Force Base in Florida), and for a corporate dental company (in Stuart, Florida). He believes that his exposure to a variety of geographical areas and different work areas have made him feel confident that he wants to stay in Marathon for years to come.

When not practicing dentistry, Dr. Kiefer enjoys sailing, spearfishing, snorkeling, scuba diving, fishing, boating, gardening, cooking, and travelling.

Meet Our Team

When you visit our friendly team for dental care in Marathon, Florida, we will work hard to care for your needs. Our team is skilled and dedicated to providing the highest possible level of care. We invite you to contact us soon to schedule your first appointment with our dentist, Dr. Thomas M. Kiefer. We look forward to caring for you!


Lindsay – Front Desk Receptionist

Lindsay was born in New York but raised since she was two weeks old in the Conch Republic. She has a sweet little boy who, at two years old, is keeping her very active. She is new to dentistry and is learning a great deal. Her energy and enthusiasm have made her a valuable addition to the team and we look forward to watching her grow.



Lindsey – Registered Dental Hygienist

Lindsey graduated from Coral Shores High School and went onto earned her Associate of Science degree in dental hygiene from Hillsborough Community College, graduating with honors in 2014. She enjoys the fun environment of the office and loves working with her fellow team members, who love working in the dental field as much as she does. Lindsey takes pride in helping patients maintain their oral health and enjoys providing preventive, therapeutic and educational services to our wonderful patients. She and her husband have recently welcomed a lovely little girl into the world.!



Yeilys – Dental Assistant

Yeilys Matos was born in Cuba and has been living here for the last 15 years. She enjoys “beaching” anything and everything to do with the beach, jet skiing, swimming, snorkeling, etc. She loves her baby, a Pomski named Luna, who is in her not-so-terrible twos. She is looking forward to helping keep people healthy and being the best assistant ever! She loves seeing you smile!



Fe – Dental Assistant

Fe is Dr. Kiefer’s wife. She is originally from the Philippines and moved to Marathon, Florida in 2014. Fe graduated in 2009 with her associate degree of medical-Dental Nursing Assistant from the Negros Oriental State University in Dumaguete City, Philippines. She is an amazing cook and also loves gardening. Dr. Kiefer and Fe brought a beautiful little girl into the world on January 31, 2019.