About Us

The Dentists That Ashwaubenon Trusts


Dr. Mark Brodhagen

Dr. Mark has served his patients and his community for nearly 50 years so far, bringing not only innovation but an undeniable level of kindness to the dental profession. What he values most about his time here in the dental office is the amazing relationships he’s built with patients, team members, and other local specialists – everyone wants to help create the best outcomes for people in need! If you’re interested in learning more about him, just keep reading below.

Why Did You Want to Become a Dentist?

Dr. Mark has known that he wanted to be a dentist ever since he got his first cavity filled at the age of eight. Since then, his passion for this field has only grown! He loves working for himself, being able to help patients so directly, and creating personalized treatment plans that fit each person’s wants and needs so well.

Where Did You Study Dentistry?

After studying at the University of Wisconsin at Stevens Point, Dr. Mark pursued his dental doctorate at Marquette University in Milwaukee. He has also undergone advanced training in a number of topics to further expand his skillset over the decades, including oral conscious sedation single/full mouth dental implant restoration, same-day porcelain crowns and veneers, TMJ/TMD treatment, Invisalign, and sleep dentistry. He proudly served for 19 years as a dental consultant for Wisconsin Employers insurance and was previously on the Board of Directors for American Medical Security. Today, he is a proud member of the American Dental Association and Wisconsin Dental Association.

What Do You Like to Do?

Dr. Mark has two daughters, three grandchildren, and a dog named Butter. Some of his favorite hobbies in his spare time include cooking, bike/trike riding, golfing, clay shooting, duck/pheasant hunting, inland fishing for walleye, and simply helping other people! In particular, he really enjoys cutting his neighbors’ grass with his riding lawn mower.

Dr. Mark Letter

We are excited to welcome Dr. Mark Letter back to our practice as a visiting practitioner! He will be providing the quality care you have become accustomed to here at our practice on a part-time basis and is looking forward to meeting everyone and even seeing some familiar faces!

Dr. Letter is a native of Brookfield, Wisconsin. After graduating from Brookfield East High School, he earned a degree in Psychology from Marquette University. He then spent the next three years employed with St. Mary’s Psychiatric Hospital as a Counselor of Adolescent Patients; working with patients ranging in age from six to eighteen. It was during this time at St. Mary’s that Dr. Letter chose to pursue a dental career and enrolled in the Marquette University School of Dentistry. He continued to work at St. Mary’s Hospital while attending dental school until he graduated in 1987. Upon dental school graduation, Dr. Letter began his dental career as an associate dentist right here at Brodhagen Dental Care while also working as a Clinical Instructor in a Hygiene Clinic.



In 1993, Dr. Letter relocated to Kewaunee and purchased a practice from Dr. Grady. Dr. Letter continues to operate his practice in Kewaunee, providing the best quality dental care possible. Dr. Letter believes in the importance of continuing education and remains active in organized dental associations and study groups. His affiliations include: WDA (Wisconsin Dental Association), ADA (American Dental Academy), and the local BDKDS (Brown Door Kewaunee Dental Society.)

Dr. Letter met his wife, Laura, during his early years as a dentist in Green Bay. He and Laura have four children and he enjoys volunteering & voting. He also spent 5 years as a Chairperson on a Board of Trustees for the Green Bay Diocese.


Monica – Administration

Monica is an invaluable member of the Bay Park Smiles dental team, where she has been providing exceptional service for several years. Her dedication to patient care and her extensive knowledge of dental procedures make her an indispensable asset to the practice. Monica’s warm and friendly demeanor instantly puts patients at ease, helping them feel comfortable and confident during their dental visits.



With her meticulous attention to detail, Monica ensures that each patient’s experience is as smooth and painless as possible. She assists the dentists with various procedures, from routine cleanings to more complex treatments, always maintaining a high standard of infection control and safety protocols. Her commitment to continuing education in the field of dentistry means that she stays up-to-date with the latest techniques and technologies, allowing her to provide the best possible care to every patient. Monica Grube’s unwavering dedication to her role at Bay Park Smiles is a testament to her passion for helping people achieve and maintain healthy, beautiful smiles.

Lindsey – Administration

Lindsey loves to be present in life and help people wherever possible. She has been in the customer service field for 7 years. She is a 26 year old momma to a 2 1/2-year-old boy named Brantley, who is her pride and joy. They love to travel, be outdoors, and make memories with friends and family. When the summer comes, Lindsey enjoys motorcycle rides and boating. Going into the winter months, you can find Lindsey hunting or possibly in a snowball fight.


Jennifer – Administration

Jennifer is one of the people whose smiling face you’ll see when you enter our office. She has been working in the dental field for over 3 years and absolutely loves what she does. Her favorite part about working at Bay Park Smiles is building relationships and getting to connect with so many people every day! Outside of work, Jennifer loves spending time with her family: She is a mother of four, and her youngest children are 7-year-old twins.


Dental Hygienist

Lisa – Dental Hygienist

Although Lisa may be relatively new to our team, she has an impressive 30+ years of experience under her belt! Since completing her studies at Northeast Wisconsin Technical College, she has undergone a variety of continuing education classes to stay abreast of the latest techniques and technology.


When asked about her favorite part of her job, she shared that it is working with people.

Lisa and her husband have three kids together, Alex, Sydney, and Madison, who they are incredibly proud of. When they can, they enjoy spending time at the lake and going to their cottage!

Here’s an interesting fact about Lisa: she loves to have fun!

Morgan – Dental Hygienist

Morgan was born in Marinette, Wisconsin. She spent her childhood growing up in both Wisconsin and Texas. After graduating from high school in Amarillo, TX, she attended and graduated from Milwaukee Area Technical College with her associate degree in Dental Hygiene. 


She made the decision to enter hygiene in part because of her experience at the dental office that she was a patient at for years: they offered her a job as an assistant, and she learned she had a passion for this field. Morgan believes in encouraging her patients and always staying positive with them — she never scolds or blames. She loves educating her patients and tailoring their treatment plan to fit their needs and wants, and she also loves learning new practices and keeping up with the dental field as it changes. What she enjoys most about working at Bay Park Smiles is that the office feels like a family — both the staff and patients.
When she isn’t working, Morgan loves spending time with friends and family, especially her parents who still live in Marinette, as well as with her bulldog, Louie. She recently bought her first house and is excited to be learning how to remodel things herself.

Kaylee – Dental Hygienist

Kaylee was born in Coulterville, a town in the southern part of Illinois. After completing high school, she earned her bachelor’s degree in Dental Hygiene from Southern Illinois University. She wanted to become a hygienist because she loves seeing patients fully understand the importance of oral care. She is always focused on informing her patients as best she can, knowing that they can’t improve the care of their teeth if we don’t help to educate them. 


In addition to her experience and skills with hygiene, Kaylee brings to our Bay Park team a great ability to create a comfortable and caring atmosphere, and she is very welcoming and excited to meet every new patient. What she enjoys most about working in our office is that everyone is so nice and willing to help at any time.
Kaylee is happily married and loves spending time at home with her husband and their cat named Mr. Kitty/Big Man. Her hobbies include doing crafts with her cricut machine and golfing. Fun fact: She has made two holes-in-one at her hometown golf course.

Dental Assistant

Yelena – Dental Assistant

 Yelena was born in Kazakhstan and spent much of her childhood growing up in Sacramento, California. She’s one of five siblings, with three brothers and a sister. After graduating from high school, she went on to graduate from High-Tech Institute with her certification in Dental Assisting. She was drawn to the dental field because she loves helping people and knows that a beautiful and healthy smile brings confidence, and she loves being a part of that. 


She brings to our Bay Park Smiles team years of experience, a hardworking attitude, and a great deal of experience with OSA and SureSmile. She loves to be a part of an office that delivers the highest quality care and patient experience.
Outside of the office, Yelena loves outdoor activities and off-roading. She also does a lot of missionary work, having traveled to other countries to volunteer at orphanages. She lived in Mexico for six months and Honduras for three months helping to start these orphanages and volunteering in donated dental work there. She’s currently planning on going to an African orphanage in the near future.

Estrella – Dental Assistant 

Estrella is originally from Yuba City, California. After graduating from high school, she went on to earn her certification in Dental Assisting. What made her want to enter the dental field is her desire to help people. Since joining our team, she has made a positive impact through this helpful personality, her positive attitude, her ability to learn, and her dedication to teamwork. She always strives to make patients feel comfortable, informed, and well cared for.


The things she likes most about working at Bay Park Smiles is our great team that’s always helpful and joyful in the work we do.
When she isn’t helping patients, Estrella enjoys spending time with friends and family, including her two older brothers and her sister. Her favorite activities include playing tennis, going to baseball games, golfing, and camping. Fun fact: She loves making pasta alfredo.

Cristina – Dental Assistant

Cristina joined our talented group of dental assistants in the winter of 2024 and had an immediate positive impact on our patients and our team. Originally from Green Bay, Cristina graduated from East High School before going on to study at Northeast Wisconsin Technical College. She decided to enter the dental field because of her desire to take care of people. When she’s working chairside, her patient’s comfort always comes first. She brings to our Bay Park Smiles this empathy and attentiveness, along with a welcoming personality and eagerness to learn. She loves that in our office patients are family.


When she isn’t at work, Cristina loves to spend time with her mom and dad, who are her best friends. She also enjoys reading, hanging out with friends, and cooking.