Dr. Longfors is a board-certified general surgeon, dedicated to providing advanced, high-quality surgical care to patients of all ages. Her experience covers a broad range of minimally invasive and traditional surgical techniques, including laparoscopic procedures and Trinity Health’s da Vinci Xi robotic surgery system. Areas of specialty include surgeries of the breast, colon, gallbladder, appendix, hernia, and gastrointestinal system. Born and reared in Minnesota, Dr. Longfors graduated with high honors from Concordia College in Moorhead, MN. She earned her Doctor of Medicine from the University of North Dakota School of Medicine and Health Sciences and completed her general surgery residency at Eastern Virginia Medical School in Norfolk. She practiced general surgery at hospitals in Arizona, Minnesota, and Wisconsin. Prior to joining Trinity Health, Dr. Longfors provided general surgery services at CentraCare Health in St. Cloud, MN. In addition to being recognized for academic achievement, Dr. Longfors has been an advocate for improving patient access to surgical care, serving international medical missions in Kenya and other short-term trips in Africa. A member of the American College of Surgeons, Dr. Longfors enjoys travel, hiking, biking, and spending time with family and friends.
Robert Guttormson, MD
Robert Guttormson, MD, MHA, FACS, is a board-certified general surgeon and a Fellow of the American College of Surgeons. With a special interest in advanced laparoscopic and robotic surgery, Dr. Guttormson is dedicated to providing excellent surgical care to patients, with innovative approaches that involve less pain, less blood loss, and quicker recovery. A Minot native, he earned his Doctorate of Medicine from the University of North Dakota School of Medicine and Health Sciences and completed his general surgery residency in Saginaw, Michigan, at an affiliate campus of Michigan State University College of Human Medicine. Following residency, he practiced at Altru Health System in Grand Forks for over nine years and served as Assistant Professor of Surgery for the UND Surgical Residency. His volunteer service includes medical missions work in Niger, Africa. His wife and their four children enjoy outdoor activities and travel. He also has an interest in photography. He is looking forward to helping serve his home community as a member of Trinity’s Surgical Associates Group.
Dustin Evans, MD
A member of our General Surgery team, Dustin Evans, MD, provides safe and effective surgical care to patients, with advanced treatment options and minimally invasive techniques for a wide range of surgical procedures. He is originally from Colorado and grew up on a dairy farm in Northeast Colorado. He earned his Doctor of Medicine degree from the University of Colorado School of Medicine. He remained at UC for his general surgery internship, and completed his general surgery residency training at the University of North Dakota School of Medicine and Health Sciences. Dr. Evans’ experience is broad and includes things from working at a gold mine to volunteering as an EMT with Highland Rescue Team Ambulance Service in Golden, CO. In his spare time, he enjoys shooting sports, 4-wheeling, and spending time with his wife and four children.
Alicia Crosby, FNP-C
A member of our General Surgery team, Alicia Crosby, FNP-C, is a board-certified nurse practitioner trained to provide a wide range of services to patients undergoing surgical procedures, including patient assessment, follow-up care, and education to surgical patients. A Minot native, Alicia received her Bachelor of Science in Nursing from Minot State University and her Master of Science in Family Nurse Practitioner training from the University of North Dakota, Grand Forks. Her RN experience includes over five years of experience as a critical care nurse in Trinity Hospital’s Intensive Care Unit. She is a member of the American Association of Nurse Practitioners.
Carol Schaffner, MD
Carol M. Schaffner, MD, is dedicated to providing individualized care that meets a woman’s changing needs throughout her lifetime. Originally from South Dakota, she earned her medical degree from the University of South Dakota School of Medicine in Vermillion. Her internship and Ob/Gyn residency were completed at Tulane University Hospital, New Orleans, LA. She’s committed to comprehensive healthcare for women, with a special interest in infertility and pregnancy.
Erica Riordan, MSN, CNM
A certified nurse midwife, Erica Riordan, MSN, CNM, provides general obstetric and gynecological care for women, as well as contraception counseling and preventive medicine. The Illinois native earned her Bachelor of Science in Nursing from Aurora University in Illinois and received a Master of Science in Nursing with a focus on midwifery from Frontier Nursing University, Hyden, Ky. Her experience includes 10 years working as on obstetrics nurse at Illinois Valley Community Hospital. She also was associated with Birth Care Staffing, an agency that assists hospitals in fulfilling specialized nursing needs. She is a member of the American College of Nurse Midwives and Midwives Alliance of North America.
Margaret Nordell, MD
A North Dakota native, Dr. Nordell practiced obstetrics and gynecology in the San Francisco area before returning to North Dakota in 1993 to join Trinity Medical Group. She’s an advocate for women’s health with a particular interest in problems related to adolescence, pregnancy, osteoporosis, and menopause. Dr. Nordell is board certified in obstetrics and gynecology and a fellow of the American College of Obstetrics & Gynecology.
Ira Paul Michaelson, MD
Ira Paul Michaelson, MD, is a board certified gastroenterologist with extensive experience caring for people with digestive disorders and other conditions affecting the G.I. tract. A lifelong Boston-area resident, Dr. Michaelson graduated from Trinity College in Hartford, CT, and earned his medical degree from the University of Florence in Italy. He completed his internship and the first year of his Internal Medicine residency at Carney Hospital in Boston. His second and third years of residency were completed respectively at Cook County Hospital in Chicago and Brigham and Women’s Hospital of Boston. He practiced briefly as an emergency physician before pursuing a two-year fellowship in Gastroenterology at the University of Massachusetts Medical Center in Worcester. He then began a 35-year association with Lawrence Memorial Hospital, Medford, MA, where he provided gastroenterology and advanced endoscopic care to G.I. patients throughout the Medford area. A member of the American College of Gastroenterology, Dr. Michaelson is dual boarded in Internal Medicine and Gastroenterology, with clinical interests in Plant Based Medicine and cancer prevention following the work of Dr. Caldwell Esselstyn of the Cleveland Clinic. An avid cross-country skier, he and his wife, Shari, have four children and six grandchildren.
Gillian Lavik, MD
A member of our General Surgery team, Gillian Lavik, MD, provides safe and effective surgical care to patients, with specialty interests that include surgical oncology, abdominal surgeries and minimally invasive options for a wide range of procedures. A Rugby, ND, native, she completed her premedical education at Macalester College in Minnesota and received her medical degree from the University of North Dakota School of Medicine and Health Sciences in Grand Forks. Her internship and residency were completed at Bassett Medical Center, Cooperstown, NY, an affiliate of Columbia University College of Physicians and Surgeons, where Dr. Lavik served as chief resident her graduate year.
Bonnie Ler, FNP-C
Bonnie Ler, FNP completed her medical training at the University of Mary in Bismarck, North Dakota. She provided medical services in the Internal Medicine Department for many years and now practices in the Gastroenterology Department of Health Center – Medical Arts.