ST. Cloud 320-253-7700
Clearwater 320-558-2201

Our Team


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Dr. Greg Lehman
Dr. Greg Lehman graduated from the Concordia College and the University of Minnesota Dental School, he served three years in the U.S. Army Dental Corp. and the U.S. Army Reserves following dental school. He joined Northway Dental Associates in St. Cloud in 1986. Dr. Lehman is a member of the Great River Study Club, which focuses on Advanced Continuing Dental Education. He is also a member of the West Central District Dental Society, the St. Cloud Dental Society, the Minnesota Dental Association, American Dental Association and the American Academy of Dental Group Practice. Dr. Lehman serves as an attending dentist at the St. Cloud Technical College in the Hygiene Training Program. His is an active member and has served in numerous positions at the Atonement Lutheran Church.

His family includes wife Kris, daughters Jackie and Beth, and son Dan. Personal interests include canoeing, sailing, camping, fishing, photography, and woodworking.


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Dr. Jeffrey Flemming
Dr. Jeff Flemming graduated from Chaska High School in 1980, the College of St. Olaf in 1984 and from the University of Minnesota Dental School in 1989. He worked as an associate dentist at Chosen Valley Dental in Chatfield, MN from 1990-1992. He came to Northway Dental Associates in 1992. He is a member of the St. Cloud Dental Society, Minnesota Dental Association, American Dental Association, West Central Dental District Society, and the American Academy of Dental Group Practice.

Dr. Flemming has been a resident of Sartell since 1993. He is married with two children, and enjoys reading, golf, fishing, hockey and traveling.


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Dr. Sarah Layne
Dr. Sarah Layne is a member of the St. Cloud Dental Society, West Central District Dental Society, Minnesota Dental Association, American Dental Association and the American Academy of Dental Group Practice. She is a native of St. Cloud, Attended Cathedral High School and the University of Minnesota Duluth for her undergraduate studies. Dr. Layne graduated from the University of Minnesota Dental School in 2004 and has been practing at Northway Dental Associates since she finished dental school.

When not at work Dr. Layne enjoys spending time with her husband Phil, children Mason and Jayden and dog Zoe. She enjoys running and the outdoors.


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Dr. Brent Deragisch
Dr. Brent Deragisch graduated from St. Cloud State University and the University of Minnesota Dental School. He is a member of the St. Cloud Dental Society, West Central District Dental Society, Minnesota Dental Association, American Dental Association and the American Academy of Dental Group Practice. Upon graduation form dental school, he worked in the Twin Cities at two private practices and joined Northway Dental Associates in 2005.

His family includes his wife Tina, daughter Kendra and son Preston. He enjoys spending time with his family, yard work, taking the dog for a walk, and the Minnesota Golden Gopher football games.


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Dr. Amanda Sperl
Dr. Sperl is a native of St. Cloud. She attended Cathedral High School and graduated from the College of St. Benedict, earning a degree in Biology. Dr. Sperl received her Doctor of Dental Surgery degree from the University of Minnesota School of Dentistry, where she graduated as a member of Omicron Kappa Upsilon Dental Honor Society and received the J. Raymond Gill Award for Outstanding Achievement in Clinical Prosthodontics.

Dr. Sperl is dedicated to providing her patients with personalized, gentle and comprehensive dental care. She believes in the importance of continuing education and is a member of the American Dental Association, Minnesota Dental Association, West Central District Dental Society and Academy of General Dentistry.

When not in the office, Dr. Sperl enjoys traveling, arts and crafts, and spending time with family and friends.


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Dr. Bethany Blonigen
Dr. Bethany Blonigen grew up in Clearwater, Minnesota, attending school in St. Cloud and graduating from Tech High School. She went to St. Cloud State University for her undergraduate training, where she earned a degree in Biomedical Sciences. Dr. Blonigen received her Doctor of Dental Surgery degree from the University of Minnesota School of Dentistry.

Her family includes her husband Brady, daughters Amaya and Everlie, and dog Kaida. She and her family love to spend time outdoors going camping, going to the lake, rollerblading, and snowboarding.

Dr. Blonigen sees her patients as her family and wants to make a positive impact in their lives. She strives to stay up to date on advances and changes in dentistry by being a member of the American Dental Association.


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Denise Knutson - Business Administrator
Denise Knutson is the business administrator at Northway Dental Associates. She started with Northway in May 2013. She is a member of the American Association of Dental Office Managers.

Denise is married and has two children. As a family they enjoy attending sporting events and being outdoors.






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