Our Mission

To provide quality care with courtesy, concern, and compassion to each of our patients while continuing to earn the trust and confidence of our patients and referring dentists.

Our Valuable Team Members

Dr. Gene Fortman
Dr. Gene Fortman
Dr. Fortman is a native of Farley, IA. He received his D.D.S. degree in 1971 from the University of Iowa and his Master of Science in Dentistry degree specializing in Periodontics in 1974 from Mayo Graduate School of Medicine. He began practicing in Mason City in 1980 and continues his practice at North Iowa Periodontics. Dr. Fortman practiced in Rochester from 1974 to 2011. Dr. Fortman is a member of the American Academy of Periodontology, the Midwest Society of Periodontology, the Iowa Society of Periodontology as well as the American Dental Association, and the Iowa Dental Association. He is also a member of the American Dental Society of Anesthesiology. Dr. Fortman makes his home in Rochester, MN with his wife Barbara. He has two sons and five grandchildren. He also has a daughter who is a graduate of the University of Iowa, She is currently a student at Wingate University in North Carolina studying Physical Therapy. Dr. Fortman and his daughter share the love of the Hawkeyes.
Marilyn Kiser
Marilyn KiserPractice Administrator
After ten years of hospital nursing, Marilyn began working with Dr. Fortman in 1987 in Rochester, MN. In 2009 Marilyn joined North Iowa Periodontics as the Practice Administrator. She is a member of the American Association of Dental Office Managers. Marilyn enjoys facilitating an Office Administrators Group with Dental Administrators in Mason City and the surrounding areas. She would be happy to answer any questions you may have. Marilyn makes her home in Rochester, MN as well. Her daughter and family
are only blocks away and Marilyn enjoys doing grandma care to her two granddaughters in her off time. She and her husband also enjoy frequent trips to West Palm Beach, FL to visit her son and daughter-in-law.
Marsha Hartman
Marsha HartmanRDH, B.S., Continuing Education Coordinator
Marsha is a graduate of the University of Iowa. She joined Dr. Fortman in 1979 as a dental hygienist. Over the past several years, she has spent most of her time working with general dental offices in the areas of patient care and developing and implementing office programs emphasizing periodontal treatment. Additionally, Marsha is a consultant for Mavin Dental Solutions. Marsha makes her home in Rochester, MN and is the mother of two sons and one daughter. She has two granddaughters and a grandson and enjoys visiting them in Denver Colorado!
DeAnne Maroo
DeAnne MarooOffice Manager
We are so fortunate to have DeAnne at our front desk! DeAnne has a vast dental background and is happy to help you plan your treatment. Please call or email DeAnne with any questions you may have regarding your treatment, scheduling or financial questions. During the summer weekends, you can find DeAnne and her husband with their two dogs in Waterville, MN at their camper. DeAnne loves spending time with her two grown children, decorating and playing with her dogs.
Courtney Rathbone
Courtney RathboneSurgical Dental Assistant
Courtney works with Dr. Fortman and our patients assisting them through their periodontal treatment. The wellbeing of each of our patients is Courtney’s #1 goal. Questions regarding your treatment can be directed to Courtney using the above link. Between sports and music concerts, Courtney is a very busy mom. She has two daughters we like to refer to as “Mini Me’s”.
Payton Bergey
Payton BergeyBusiness Assistant, Surgical Dental Assistant
Payton is the first smile you will see when you enter our office! She travels from Osage, IA to work at North Iowa Periodontics. Payton is delighted to assist our patients before, during, and after periodontal therapy. Questions for Payton can be sent using the above link. Even though you will most likely find Payton working with our patients in the front office, she is also a Dental Assistant and can occasionally be seen in the clinical area. When Payton is not at work she is being “mom” to Louie, her labradoodle puppy. She is also in the process of decorating her new home!
Veronica King (Roni)
Veronica King (Roni)Surgical Dental Assistant
Roni and her family returned to her roots in Iowa after living in California with her Marine husband. Roni will work with our patients through their periodontal treatment. She is very caring and will make sure our patients are comfortable, all questions have been answered, and the experience in our office is pleasant. Direct any questions for Roni using the email link above. Roni and her husband are huge hockey fans and cheer on the Minnesota Wild! She has two young boys who may have hockey in their future!
Jenna Hauan
Jenna HauanRDH, B.S.
Jenna, a dental hygienist, graduated from Mankato State University in Mankato, MN. Jenna enjoys assisting each of our patients to achieve a higher level of health using education as a stepping stone to success. Jenna travels from Lake Mills, IA to work at North Iowa Periodontics. She is the proud mother of two children, a boy and a girl! Jenna is a twin!
Laura Jeppeson
Laura JeppesonRDH
Laura joined North Iowa Periodontics after long time hygienist, Trese, retired. Laura is excited to see our periodontal therapy patients and assist them in preserving their dental health. Laura is both kind and caring. Laura is the mother of three. Her and her husband enjoy time spent with their two young boys and daughter. On her off days you will most likely find Laura out in her lawn doing yard work!
Trese Castle
Trese CastleRDH, B.S., CCA
Trese, a graduate from the University of Iowa, worked with Dr. Fortman for nearly 30 years. Trese retired in May of 2018. We are so fortunate that Trese continues to see patients when Jenna or Laura are not available Trese is the mother of three and grandmother of nine! She is enjoying cooking and baking, biking, fishing, and a number of other things in retirement!