Meet Our Staff


Megan O. — Patient Coordinator

Megan joined our team in the spring of 2013. With her background in chairside assisting, she has an additional strength in understanding treatments, scheduling appointments and making each appointment special. In her spare time, Megan enjoys spending time with her family and friends, especially at her family’s cottage. She tries to spend as much time on the lake during the summer as possible.

Rebecca R. – Financial Coordinator

Rebecca has been our financial coordinator since the fall of 2012. She has an extensive background in chairside assisting as well as insurance and billing. In Rebecca’s spare time she enjoys spending her time with her husband Jim and two sons, Joe and Jesse.

Margaret D. – Treatment Coordinator

Margaret began at Janssen Dental in the spring of 2013. She attended Lakeshore Technical College for Dental Assisting. With her Dental Assistant background, she has been a dedicated asset to our office. Margaret grew up in Manitowoc and enjoys spending time with her two daughters. In her spare time, Margaret loves to travel, play volleyball, golf and play baseball.



Holly D.

Holly graduated from Northeast Wisconsin Technical College with a Dental Hygiene degree in 1988. She began working at Janssen Dental in 1997 and sharing her talent with her patients ever since. In her spare time she loves to be with her wonderful husband Gary and three daughters camping, fishing and doing other outdoor activities.

Lisa L.

Lisa graduated from Madison Area Technical College with a Dental Hygiene degree in 1981. Since then she has practiced in many parts of the state including Delevan, LaCrosse, Madison and Wausau. After moving to Green Bay in 2011, she joined our team and has been a loyal asset. Lisa is married with two children; her daughter lives in Mesa, Ariz. and her son lives in Wausau. In her spare time she enjoys going to her cottage, curling and riding her Harley.



Ashley V.

Since graduating from Fox Valley Technical College in 2009 with a technical diploma in dental assisting, Ashley has applied her talents here at Janssen Dental. After working as a cosmetologist for seven years, she has the ability to make any patient calm and at ease during his or her appointment. In her free time, Ashley enjoys spending time with her husband Greg and family (including four nieces and nephews). She loves fall weather and enjoys doing many outdoor activities such as hunting, biking and hiking.



Amanda W. – Executive Assistant

Amanda has been with Janssen Dental since 2005. Through the years Amanda has had the opportunity to work in almost every capacity in the office. With her history and experience at Janssen Dental, Amanda now assists Dr. Craig and Mary in maintaining a comfortable and smooth running office. She is also responsible for all of the office’s medical billing. Amanda received her Aesthetics degree in 2013 and has obtained her laser certification from the National Council on Laser Certification in 2012. Amanda is currently planning to return to school in January 2014 to expand her education into massage therapy. With her continued education, Amanda hopes to expand our sister company, NEW Laser. In her spare time, she enjoys spending time with her three dogs Dudley, Bud and Brewer. Amanda’s favorite pastime is, of course, rooting on the Packers.

Mary K. – Office Manager

Mary has been working for Janssen Dental Clinic since 1996. Through the years she has had great opportunities to expand her knowledge in the dental, TMJ, cosmetic, sedation, implantology and custom-made mouthguard fields. Mary has also completed additional education in the study of laser and aesthetics to advance our sister company NEW Laser. Mary holds degrees from Gill-Tech Academy, Rocky Mountain Laser College and Fox Valley Technical College. When she is not working, Mary enjoys spending time with her three children, curling and catching as many Bullfrog games as possible.

Dr. Craig Janssen

Dr. Craig Janssen graduated Cum Laude from Marquette University School of Dentistry in 1985. He joined Janssen Dental Clinic as the third generation dentist after graduation, following in his father’s and grandfather’s footsteps. Dr. Craig acquires many hours of continuing education including sedation, laser, cosmetic, TMJ, orthodontic, and custom mouthguard courses each year. His office provides the latest in techniques and technology to offer patients the best possible long-term, whole-body health.

“The mission of Janssen Dental Clinic is to provide high quality dental care to our patients in a comfortable, friendly, family oriented atmosphere,” explained Dr. Craig Janssen. “When it comes to your smile and dental health, I strive to have the most advanced training and technology to make your visit the best dental experience you’ve had. It’s that kind of experience that gives you the confidence to refer your family and friends to our office.”

Dr. Craig is a member of the American Dental Association, Wisconsin Dental Association, Academy of Sports Dentistry, Dentists for Oral Conscious Sedation, and the Brown-Door-Kewaunee Dental Society.

In his spare time, Dr. Craig maintains the landscape around the office, hunts and fishes. If Dr. Craig is not working you will be sure to find him outside.