Dental Staff

Root River Dental is proud to introduce the friendly, experienced, caring members of our team!

Dr. Jeff Welnak | Dentist in West Allis, WI

Dr. Jeff Welnak

Dentist in West Allis, WI

Root River Dental

Dr. Jeff has been involved in general dentistry at the present location since graduating from Marquette University School of Dentistry in 1980. Taking over the practice from his father, Dr. Wayne Welnak, who started the business in 1953, he has proudly served the dental needs of many people from the entire Greater Milwaukee area and beyond (we even have patients who travel from Germany for their dental visits!). Dr. Jeff enjoys golf, cycling, fishing, photography, Wisconsin sports teams, and music when he’s not spending time with his family (including two granddaughters)

Mary Jo | Dental Staff in West Allis, WI

Mary Jo

Dr. Jeff’s wife of thirty-seven years has been helping with the business since Dr. Wayne retired. She handles the front desk duties and all that entails and has an extensive background in all insurance matters. Her friendly smile and cheery disposition extend a warm welcome to all our visitors. Mary Jo enjoys reading, gardening, walking, traveling, and being with family.

Terri | Dental Staff in West Allis, WI


Terri has been a dental hygienist for over twenty-six years, including nineteen with Dr. Welnak. Her gentle, caring manner with patients complements her experience in all facets of dentistry. She has advanced training in local anesthesia which becomes invaluable for those individuals seek conservative gum treatment. Terri has also recently assumed sharing the front desk duties with Mary Jo. Terri enjoys supporting her children’s many athletic endeavors and fishing in northern Wisconsin.

Tina | Dental Staff in West Allis, WI


Tina has been in dental hygiene since 1997; the last seven years with Dr. Jeff. She enjoys taking care of patients’ dental needs in a comforting manner. She and Terri both take time to discuss the many varied interests our patients like to share with us. Tina enjoys live music (ask her about 311) and spending time with her family (including two grandchildren).

Michele | Dental Staff in West Allis, WI


Michele has been a dental assistant for over twenty-seven years, including twenty with Dr. Welnak. Her experience in all dental treatments is evidenced in her efficient chairside manner and seamless assistance to the doctor. She loves helping patients young and old and enjoys friendly conversation with everyone. Michele enjoys craft projects, skeet and target shooting, and fishing when she’s not supporting her son’s many extracurricular activities.