Meet the Team

We recognize that all our patients are unique and deserve to receive dental care that reflects their individual needs. Our experienced and talented team is committed to working with you and your family to create a comfortable, stress-free, and rewarding dental experience every time you visit our practice.

We are pleased to welcome you and your family, and we look forward to working with you.




Dental Assistant

Hi, I’m Ann. I have been a dental assistant since 1991 and joined Hartstone Dental (Hartjes Dental) in 2001. I have a Bachelor of Arts in English literature and you can find me as Dr. Joel’s assistant. Interacting with our patients and doing my best to make sure their visits are pleasant and comfortable is very important to me. The strong bonds that we create with our patients make working at Hartstone (Hartjes) irreplaceable. That is why I have called the office my work home for many years. The friendships I have created with my coworkers that expands past our time together at the office is important to me, and is again one of the many things that makes working at Hartstone Dental (Hartjes Dental) exceptional!

When I’m not at the office, you can find me with my daughter Jade, husband Mike and black lab Cosie.  We love traveling and exploring the world, as well as the simple, everyday pleasures life offers us.  I also enjoy music of all sorts, hanging out with friends, baking, and reading a great book.


Dental Assistant

Hi, my name is Crystal. I was Dr. Brad’s assistant for more than 15 years now I'm assisting Dr. Jon Szewczyk. Working with patients to keep them relaxed and comfortable during their visits is my main goal. I love to help ease their nerves by keeping them laughing, and make sure they feel confident with their smile when they leave our chair. I am also responsible for our OSHA and CPR training at the office, to keep our staff up to date with the latest medical and safety trainings.

When I’m not at the office, you find me with my husband Josh, and our two kids, Carter and Violet. We keep busy doing things like camping and boating, and you can also find us chasing our seven chickens and rooster around our yard. I love staying active and participate in many charity and fun runs. Sometimes I convince my coworkers to join me in those runs, especially the annual Crazylegs Classic run in Madison every spring. 


Dental Assistant

Hi, I’m Mindy. I have been working at Hartstone Dental (Hartjes Dental) since 2009. I have been working as a dental assistant for more than a decade. When you see me at the office, I will be assisting both doctors with various procedures. The best part of my job is being able to help the doctors maintain and create beautiful smiles. Working at Hartstone (Hartjes) has brought me career fulfillment as well as many great friends.

When I’m not at the office, you can find me with my husband Mike, daughter Autumn, stepson Ashton, and our two dogs Malibu and Moose. I am a Badger sports fan and enjoy being outdoors as much as I can. In the spring and summer, I look forward to planting in my garden and spending time at my parent's camper at Merry Mac Campground. During the winter months, I enjoy attending meat raffles with my coworkers.






Registered Dental Hygienist

Hi, I’m Kari, and I have been a dental hygienist at Hartstone Dental (Hartjes Dental) since 2004. I pride myself on providing my patients a thorough and gentle cleaning, as well as teaching them proper care management for their smiles. It is important to me that I help my patients take great care of their teeth, and through the years, I have been able to get to know them as well as watch many of their children grow up. Working at Hartjes has given me the chance to work with amazing co-workers that make me excited to go to work.

When I’m not at the office, you can find me on my “funny” farm with my husband Scott, our two boys Austin and Carson, six chickens, five horses, three goats, three dogs, and our cat. When we aren’t running around on our farm, you can find us camping and doing trail rides as a family. I love watching comedy movies because laughing is one of my favorite things to do.


Registered Dental Hygienist

Hi. I’m Laura, one of the dental hygienists at Hartstone Dental (Hartjes Dental). I have been working in my field for a decade and at Hartstone Dental (Hartjes Dental) since 2010. One of the most enjoyable parts of my job is being able to ease patients’ fears about dentistry, and help them to actually enjoy their visits with us. You can find me providing dental cleanings for adults and children, as well as treatments for our periodontal patients. Through my years at Hartstone Dental (Hartjes Dental), I find myself happy that I have developed such strong relationships with our patients and my co-workers. The patient-first and prevention focus of Hartstone Dental (Hartjes Dental) reminds me of why I chose dental hygiene as my profession. Through Hartstone Dental (Hartjes Dental), I have been able to participate in the Touched Twice Dental Clinics, which allows us to help people who otherwise might not be able to receive dental care.

When I’m not busy at the office, you can find me doing things like boating and fishing with my husband, our two children and our labradoodle, Murray.  I enjoy visiting Wisconsin Northwoods to go hiking and enjoy nature. I am a huge Packer and Badger football fan, and love a football season filled with friends, laughs, and, of course, a Packer and Badger win!


Registered Dental Hygienist

Hi, I'm Sara, and I have been working at Hartstone Dental since April 2023.  However, I have been a dental hygienist for 20 years!  I enjoy taking care of patients and helping them maintain a happy and healthy smile.  I like to think of every "cleaning" as a mouth makeover with happy smiles walking out the door and looking forward to returning.  The patients and employees at Hartstone Dental have been very warm and welcoming to make the transition a great experience!

When I'm not at the office, you can find me with my husband, Jack, our two children, Rylan and Ella, and our black lab, Oakley.  We like to keep busy watching the kids sporting events (it's so fun to watch them grow!) and enjoying time with family and friends.  We also enjoy camping, boating and downhill skiing.  I'm looking forward to getting to know the Hartstone Dental team and patients!

Front Office


Business and Patient Care

Hi, I’m Kayla! I joined the Hartstone (Hartjes) Team in 2017.  Prior to working to Hartstone (Hartjes), I worked for 15 years at the Cross Plains Pharmacy as a pharmacy technician.  I have always loved working face to face with patients, so when I started here I knew I would love it!  I truly value the friendships I have made with my co-workers.  I have recently taken on additional roles within the office so you can find me doing anything from helping patients at the front desk to overseeing the business side.

My partner, Ben and I, welcomed our daughter Everly in June of 2020.  We have two cats named Marlee and Lola, together they keep us busy at home.  Some things that I enjoy while not being in the office are cooking and meal prepping, being outdoors doing just about anything, visiting breweries, staying active in my day-to-day life, and spending time with my friends and family.



Front Desk

Hi, I’m Caitlin, and I have been working at Hartstone Dental (Hartjes Dental) since September 2019. I have been working in the dental field since 2008 when I graduated from the dental assisting program at MATC. I was an orthodontic assistant for years and loved being part of improving patients’ smiles. Now you will find me at the front desk greeting our patients and helping in any way that I can.

I was born and raised in the Madison area but moved to Arizona for ten years where I met my husband Dave and had our son, David and daughter, Presley. We moved back to Wisconsin in 2018 to be closer to family. We love to go up to our family cabin to ride four-wheelers and dirt bikes. You will also find us boating on Lake Wisconsin and enjoying the lake life.


Front Desk

Hi, I’m Krystan, and I have been working at Hartstone Dental since May 2022. I am grateful to be working with amazing co-workers and creating the relationships I have made since starting here. I am new to the dentistry field and I have learned so much through the help of all my co-workers. I enjoy working face-to-face with our patients as I greet them and help them with any questions they may have.

Some things I enjoy doing outside of the office include reading books, being outdoors and working on my craft projects. When it comes to crafting, the one I like the most is making cards for kids in the hospital, as well as friends and family.

1001 N Gammon Rd #2
Middleton, WI 53562
(608) 836-5600