Our Dental Team
Our Dental Providers
Dr. Marvin Zerr, DDS, PHD - Dental Director
Dr. Marvin A. Zerr, DDS PhD has been the Dental Director for Northland Health Centers for the past 4 years. He graduated from the University of Nebraska College of Dentistry in 1989. He continued graduate studies at the University of Iowa and received his Endodontic certificate and a PhD in Microbiology in 1996. For 24 years, Dr. Zerr has maintained a private practice in Endodontics. During these years, he was also a part-time Endodontist at several Indian Health Service dental clinics throughout the state. Since 2012, he has been employed as a part-time Endodontist at Elbowoods Health Center - Dental in New Town, ND. Originally from Mandan, Dr. Zerr has had many different “experiences” throughout his life related to dentistry as well as the military. He has spoken at both national and local dental/medical meetings and had the experience of seeing Iraq in 2005 as a military dentist. He remains a proud member of the NDARNG, originally enlisting in the USAF in 1978. Dr. Zerr and his wife, Colleen, have three children, one son-in-law and two grand kids. Two of their children and their son-in-law are teachers. The youngest in the family is a dentist. Dr. Zerr and his wife have lived in Harvey for the past 18 years.
Dr. Delvin Hansen, DDS
Dr. Delvin Hansen grew up on a dairy farm in Iowa. He received his dental degree from Loma Linda University in California and entered the US Public Health Service in 1979; with his assignment to White Earth Indian Health Service in Minnesota. After serving two years Dr. Hansen moved to Harvey, ND and started his dental practice. In 2006 he joined the US Air Force Dental Corps and was stationed at Ramstein, Germany and Minot, ND. He returned to Harvey in 2010 and resumed his dental practice until retiring on April 1, 2019. Delvin and his wife, JoAnn, enjoy traveling and have gone on short term dental mission trips to Russia, Ukraine, Nepal, Philippines, Zambia and Mozambique. Special interests include: photography, golf, his e-bike, helping friends at harvest time, medieval & WW II history, hiking and exploring Europe. Delvin and JoAnn live in Harvey; they have two children, a son in Rapid City and a daughter in Breckenridge, Colorado. He is looking forward to working part-time at Turtle Lake.
Dr. Jakob Zerr, DDS
Dr. Jakob Zerr graduated from Harvey High School, Harvey, ND; however, prior to moving to Harvey, he lived in Minot, ND. He attended Minot State University and received degrees in Biology and Chemistry in 2015. Dr. Zerr received his Doctor of Dental Surgery at the University of Missouri-Kansas City in 2019. Following dental school, a 1-year General Practice Residency was completed at the University of Nebraska Medical Center in Omaha, NE. He is excited to return to North Dakota to provide service to a smaller community. When not treating patients, he enjoys being outdoors by participating in sports activities, hunting/fishing and playing the accordion.
Mickelle Hultberg, RDH
Mickelle was born and raised in Walhalla, North Dakota. Shortly after graduating from high school, she moved to Pennsylvania where she attended college and received her dental hygiene degree. She and her husband live outside of Max, ND, where they have a small hobby farm. She enjoys outdoor activities and spending time with family and friends. During the winter she and her husband spend their time curling and ice fishing.
Joanie O'Grady, RDH
Joanie is a Max, North Dakota native. She graduated from Max Public School then moved out east and landed in Buffalo, NY where she lived for 17 years. Joanie attend Erie Community College where she received her Dental Hygiene degree. Joanie has two sons that currently live in Bismarck, North Dakota. She lives in the country and enjoys the outdoors. Her hobbies include: gardening, riding horse, and playing with her dogs and cats. Joanie also enjoys spending time, making memories with family and friend. Joanie enjoys all ages of patients and assisting with their oral hygiene care. She was welcomed to join the team at Northland Health Centers in March 2016.
Caitlin Wacker, RDH
Caitlin is a North Dakota native who grew up outside of Washburn, ND. After graduating from Washburn High School, she continued her education for one year at North Dakota State University. Caitlin was then accepted into the dental hygiene program at North Dakota State College of Science in Wahpeton where she graduated in May 2010. Caitlin began working as a full time Registered Dental Hygienist at Northland Health Centers in Turtle Lake immediately following her graduation. Caitlin resides in the countryside of Mercer, ND with her husband and son. She loves being a mom and spending as much time outdoors as possible.