About Our Doctors

Drs. Karrels, Lyons, Wason and Popp are skilled and experienced dentists who work together to provide the most advanced dental care available in Janesville and the surrounding areas. All four dentists, through their membership in the Rock County Dental Society, Wisconsin Dental Association and the American Dental Association, support the efforts of organized dentistry to promote prevention of dental disease and better oral health for all people.

Dr. Mark Karrels

KarrelsDr. Mark Karrels is a graduate of Marquette University School of Dentistry. Born in Oshkosh, Wisconsin, he moved to Janesville after dental school in 1978. He is married and has three adult children. Dr. Karrels received the 2008 Pyramids of Pride Community Outreach Award from the Wisconsin Dental Association in recognition of his service in starting a free dental clinic for HealthNet of Janesville, Inc. patients in Rock County. He is a two-time past president of the Rock County Dental Society and serves as Senior Warden at Trinity Episcopal Church in Janesville. He is co-owner of Luke’s Custard & Deli with his oldest son, Luke. Dr. Karrels enjoys playing tennis (though not quite as well since both knees were replaced), computers and touring the country on his 2003 Screaming Eagle Road King motorcycle.

Dr. Tricia Lyons

DrLDr. Tricia Lyons is a 1994 graduate of Marquette University School of Dentistry. She returned to her hometown of Janesville and became associated with Dr. Karrels in 1995. In 1999, she became a partner, and they formed TriMark Dental Clinic. She is a past president of the Rock County Dental Society. Dr. Lyons enjoys travel, the outdoors, fitness and exercise as well as gardening.

Dr. Tonya Wason

DrWasonDr. Tonya Wason is a 2004 graduate of Marquette University School of Dentistry. While in training, she received numerous clinical awards, including the best general dentist. She is married and has a daughter. She enjoys bowling, traveling, and her two dogs, Meeko and Ruby. She is a Janesville native.

Dr. Eric Popp

DrPoppDr. Eric Popp is a Janesville, Wisconsin native. He graduated from the University of Iowa College of Dentistry in 2014 and joined TriMark Dental Clinic shortly after. He's the proud parent of a son and daughter with his lovely wife, Katie. His interests include bicycling with the family, golf, and woodworking. He's is a member of the American Dental Association, Wisconsin Dental Association and is the Vice-President of the Rock County Dental Society. He looks forward to treating you and your family.

TriMark Dental Clinic

  • TriMark Dental Clinic - 2130 Kennedy Rd., Janesville, WI 53545 Phone: (608) 752-7452 Fax: (866) 254-4324

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