Meet Our Staff

Our Hygienists

Kathy O’Hagan, RDH

Was born and has lived in Hartford all her life. After high school, always having an interest in dentistry, she attended MATC receiving a diploma in dental assisting. She worked in this field for five years. Eventually a family business took her on another path until returning to MATC to receive a degree as a Registered Dental Hygienist. The Hartford Dental Group proved to be the caring practice with the ideals and talented staff that has set her roots. In her 23 years with the HDG, friendships with patients continue to evolve, always striving to give her best to all. While pursuing this career, encouragement comes from her husband Mike, children Casey, Shane, and Brooke, grandsons Peyton and Kendrick, and granddaughter Kinley.  When not caring for family and home, she can be found trail riding in the Kettle Moraines and nearby parks with her friend, Mac.

Stacey Hartmann, RDH

Stacey grew up in Slinger and attended MATC Milwaukee. She graduated with a degree in Dental Hygiene in 1990. She began her career at The Hartford Dental Group that same year. Educating her patient’s on their overall oral health is very important to Stacey. She really enjoys getting to know her patient’s on a personal level. Stacey resides in Germantown with her husband and three children. She enjoys reading, baking, gardening and spending time up north.

Kristen Reiser, RDH

Kristen graduated from Waukesha County Technical College in 2012.  She started with The Hartford Dental Group in November 2014.  Kristen likes to get to know her patients and help them understand how they can improve their oral health.  Outside of work, Kristen enjoys reading, watching movies, taking walks with her dog and spending time with her husband and family.


Our Dental Assistants

Robin Fedorski – Certified Dental Assistant/Dental Administrator

Robin has been with the Hartford Dental Group for 17 years as a Certified Dental Assistant. You will see her still seeing patients, but is currently taking on the dental administrator role also. When she is not in the office helping create healthy smiles, she is in the community doing dental health talks at the elementary schools. She is very busy with a husband and three children. When they have free time, you will find the Fedorski’s up north getting muddy on their 4-wheelers!

Karen Conrad – Certified Dental Assistant

Karen has been with the Hartford Dental Group for 25 years working as a chair side for Dr. Jensen. “I enjoy helping people improve or maintain their smile.”Karen enjoys spending time with her family and friends, being on the lake, and volunteering at her church and daughter’s school. Karen’s Favorite Moment Working with the HDG Team: I have many, but anytime we can spend time with each other outside of the office, we always have a good time.

Stacey Kuehl

Stacey joined The Hartford Dental Group in early 2016, with 4 years of experience. Stacey and her husband recently welcomed a baby boy in July! When not at the office, she loves spending time with family and friends, camping, fishing, and playing yard games.

Jessie Loser

Jessie joined The Hartford Dental Group in 2016, with 20 years experience. She enjoys working with patients and helping them achieve better dental health. She lives in Kewaskum with her husband and 3 children. They love to fish and enjoy the outdoors!

Our Office Staff

Debbie Bruss – Business Coordinator

Debbie has been with the Hartford Dental Group for 30 years as the Business Coordinator. “What I enjoy most about dentistry is seeing all the smiles!” Debbie likes to read, hike, cook, and spend time with her grandchildren when she’s not at work.

Kathy Lighthizer – Financial Coordinator/Business Administrator

Kathy has been with the Hartford Dental Group for 35 years working in the Financial, Insurance, and Reception area. “I enjoy the interaction with the patients most.”Kathy enjoys spending time with her family, children, and grandchildren, along with socializing with high school friends. She also enjoys boating in the summer and reading. Kathy’s Favorite Moment Working with the HDG Team: One of the highlights is our staff appreciation dinner. I also enjoy the frequent “potluck” lunches we have throughout the year to mark birthdays and other noteworthy occasions. I love it when a day just “clicks”!

Cindy Stuettgen – Receptionist

Cindy started her career with The Hartford Dental Group in January 2015.  “I enjoy getting to know our patients and interacting with them!”.  When she is not behind the front desk, Cindy can be found spending time with family and friends at home or up north, doing outside activities or relaxing by a campfire!