Our staff at Great Lakes Dental Center would like to assist you in any way we can to achieve your oral health goals.

Meet our Team members

Janet L. Boyes, DDS

Dr. Janet Boyes is the dentist at Great Lakes Dental Center in Spirit Lake, IA.  Dr. Boyes is the daughter of Randy and Cheryl Brenton and was born in Iowa City, IA.  She was raised in Clear Lake, IA and graduated from Clear Lake high school.  She studied chemistry and received her bachelor’s degree from Luther College in Decorah, IA.  She did research and studied biology for a year at the University of Iowa before attending the University of Iowa College of Dentistry and Dental Clinics. 

While in dental school, Dr. Boyes received the William Tade Class of 1954 Student Aid Fund Scholarship, Dr. Walter Williamson Student Aid Fund Scholarship, and the McConaughy-Nonen Class of 1988 Scholarship Fund in addition to the Keith E. Thayer Fixed Prosthodontic Award and the American Equilibration Society Award.  She is a member of the Omicron Kappa Upsilon dental honor society.  During her dental training, Dr. Boyes completed externships in the Delta Dental of Iowa Foundation Geriatric and Special Needs Clinic as well as the Indian Health Services Cass Lake Hospital Dental Clinic in Cass Lake, MN.  She also served patients by volunteering with the Iowa Mission of Mercy in 2012 and 2013 and traveled to Jamaica with the Christian Dental Society to treat patients in 2013.  She graduated from the University of Iowa College of Dentistry and Dental Clinics in June 2014.  She worked in Fort Dodge, IA serving as the dentist and dental director at the Community Health Center of Fort Dodge prior to acquiring the Great Lakes Dental Center.  Dr. Boyes is married to Seth Boyes and they just had their first child,a daughter named Gwendolyn, in 2017.  They reside in Spirit Lake, Iowa.

Dr. Boyes is a member of the American Dental Association, the Iowa Dental Association and the American Academy of General Dentistry.  She is very excited to join the Great Lakes community and looks forward meeting new patients at the Great Lakes Dental Center.


Dr. Dale Palmberg

Dr. Dale Palmberg grew up in Storm Lake, Iowa. After high school, he attended Buena Vista University and graduated in 1974. He then attended the University of Iowa College of Dentistry graduating in 1978 and began his practice in Spirit Lake, Iowa. Since selling his practice, he has been able to enjoy a second career interest; being a farm hand in the Spring and Fall. Dr. Palmberg practices dentistry part-time (Thursday mornings) at Great Lakes Dental Center. He also enjoys volunteering at The Dream Center in Spencer, Iowa which hosts a free dental clinic two days a month. Dr. Palmberg and his wife Pat reside in Spirit Lake, Iowa and have two children and two grandchildren.  


Beverly Berkland

Beverly Berkland is the office manager of Great Lakes Dental Center and has worked for the company for over four years.  She has worked in Spirit Lake as an office manager and registered dental assistant for various dental offices and as an office manager for Iowa Lakes Orthopaedics.  Beverly is a graduate of Spirit Lake Community School and attended college at Iowa Central Community College for Dental Assisting.  She is a registered Dental Assistant.  She is a member of the American Association of Dental Office Managers.  She is married to Jeff Berkland and they reside in Okoboji, Iowa. Jeff owns JB trucking and farms in the Cylinder, Iowa area.  Bev has two children, Katie and Dane, daughter-in-law Brooke, and two grandsons, Tatum and Nolan.  She enjoys time with her family, boating and camping and trips on the motorcycle.  Bev is active in her church and doing outreach with the Step in Faith Missional Community.


Katie Adams

Katie is a registered dental assistant and has been with Great Lakes Dental Center for two years.  Katie and her husband, Steve, live in Estherville.  In her spare time she enjoys kayaking, reading, crafting and spending time with friends and family.


Linda Flaharty

Linda graduated from Hawkeye Community College in 1982 with her degree in Dental Hygiene.  She is married to Larry and has five (grown) children.  When not at work, she enjoys spending time with family and friends, reading, and traveling.


Linda Erickson

Linda is a native Iowan who has practiced dental hygiene for many years in Iowa and other parts of the country.