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Gastrointestinal Diseases

Moayed Ibrahim, MD

A member of our cancer team, Moayed Ibrahim, MD, is a board-certified medical oncologist and hematologist, dedicated to providing expert care to cancer patients utilizing the latest anti-cancer therapies such as chemotherapy, immunotherapy, and hormone therapy. He is also skilled in the diagnosis and treatment of diseases of the blood and blood forming organs.

A graduate of the Hashemite University Faculty of Medicine, Jordan, Dr. Ibrahim did his Internal Medicine residency at East Tennessee State University/Quillen College of Medicine in Mountain Home, TN. After completing a fellowship in Geriatric Medicine at Baylor College of Medicine, Houston, TX, he accomplished his Hematology/Oncology fellowship at Tulane University School of Medicine, New Orleans, LA. He was selected as chief resident and chief fellow during his training.

Dr. Ibrahim takes pride in treating his patients as he would like his own family members to be treated. He believes that shared decision-making is the cornerstone of a successful treatment plan.

Dr. Ibrahim is board certified in Hematology, Medical Oncology, Geriatrics and Internal Medicine. He’s been published in peer-reviewed publications and has been recognized with multiple academic and research awards, including the 2020 American Society of Hematology Abstract Achievement Award.

A member of the American Society of Clinical Oncology, American College of Hematology, and American Geriatric Society, he enjoys cycling, running, and walking his dog, Smoke.

Robert Fischer, MD

A member of our Ear, Nose and Throat team, Robert Fischer, MD, is an otolaryngologist, dedicated to providing high-quality, up-to-date care to adults and children with ear, nose and throat conditions. Dr. Fischer is board-certified in Otolaryngology with three decades of ENT experience. He is well-equipped to provide medical and surgical care for the full range of disorders, from ear and sinus problems, to head & neck surgery and facial plastic surgery. A magna cum laude graduate of the University of Wisconsin, Dr. Fischer earned his medical doctorate from the Medical College of Wisconsin and completed his Otolaryngology residency at Portsmouth Naval Hospital in Virginia as part of a 10-year association with the U.S. Navy Medical Corps. After discharge, he practiced at Duluth Clinic in Minnesota and Wind River ENT in Lander, WY, before joining Trinity Health in 2015. He practiced four years with Sanford Health in Bemidji, MN, before returning to Trinity.

Melissa Andreasen, FNP-C

A member of our pediatrics team, Melissa Andreasen, MSN, FNP-C, is a board-certified family nurse practitioner, dedicated to providing compassionate, evidence-based care to children and adolescents. A graduate of Minot State University, Melissa earned her Bachelor of Science in Nursing in 2013 and began her nursing career as an RN with Trinity Health. She served patients in the addiction services, intensive care, and same day surgery units before shifting her focus to advanced practice nursing. While pursuing a Master of Science in Nursing from the University of Cincinnati, she worked part time as a clinical nurse instructor with Dakota College at Bottineau. She completed her Family Nurse Practitioner training 2020 and joined a private primary care practice as a family care provider, helping pediatric, adult, and geriatric patients manage the full range of acute and chronic health conditions. Melissa is board certified by the American Association of Nurse Practitioners. She loves spending time with her two children when she’s not at work.

Dawn Romfo, MSN, FNP-C

A board-certified nurse practitioner, Dawn Romfo, MSN, FNP-C, provides care and support to oncology and hematology patients as a member of our cancer care team. A Burlington native and Des Lacs-Burlington graduate, Dawn earned her Bachelor of Science in Nursing from Minot State University. She practiced clinic and hospital nursing in various community settings in the region, including Trinity Hospital’s ICU and Post-Anesthesia Care units. In 2012 she began a long association with Dakota College at Bottineau, serving initially as a nurse faculty member and for six years as Nursing Program Director. She completed her Master of Science in Nursing Education through Walden University in Minneapolis in 2014 and more recently earned a post-master’s certificate in Family Nurse Practice through Maryville University in St. Louis. She’s a member of the Oncology Nursing Society, American Association of Nurse Practitioners, North Dakota Nurse Practitioner Association, and Sigma Theta Tau International Honor Society of Nursing.

Nancy Longfors, MD

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.

Joseph Stonehocker, CPNP-PC

Trinity Health is pleased to announce that Joseph Stonehocker, CPNP-PC, has joined our team of providers at Trinity Health Western Dakota in Williston. A board certified pediatric nurse practitioner, Joseph has spent the last three years serving the healthcare needs of Williston-area young people. He provides primary care to children ages 0 to 18, with an emphasis on general and acute pediatric care, annual well-child visits, and mental health support, including ADHD diagnosis and treatment. He’s also trained in various surgical procedures such as circumcision and tongue-tie correction. Originally from Canada, Joseph was reared in Edmonton, AB, and moved to the United States with his family at an early age. He graduated from Utah State University and earned both his Master of Science in Pediatric Nurse Practice and his Bachelor of Science in Nursing from UT Health San Antonio, part of the University of Texas system. A devoted husband and father, he and his wife have five children. They enjoy family time and attending youth sporting events.

William Sisa, MD

Dr. Sisa is a pediatrician, dedicated to providing holistic care that promotes the well-being of children, adolescents, and their families.  He is specially trained to manage the full range of children’s physical, mental, and emotional health problems, including acute and chronic conditions, behavioral difficulties, and developmental disorders.

Dr. Sisa earned his Doctor of Medicine degree from St. George’s University School of Medicine, Grenada, and completed his pediatric residency at Lincoln Medical and Mental Health Center, a teaching hospital affiliated with Weill Cornell Medical College in New York City.

Dr. Sisa grew up in Ghana, where he won the Presidential Award for being the best student from one of the 10 regions in Ghana at the Junior High School level, after which he proceeded to Major in Science at the best high schools in Ghana. Upon completion of high school, he started a remedial school in his hometown which is currently a high school in Ghana.

He proceeded to the University of Ghana where he majored in Chemistry. Upon arrival in the USA, he worked as a quality control chemist at NicePak PDI helping to develop some of the HPLC methods used to test the Super Sani Wipe the most popular hospital disinfectant used in hospitals in the USA. Dr. Sisa was pursuing a graduate Studies in Biochemistry at The City University of NY before he decided to pursue medicine at the St. George’s University School Medicine.

During clinical years in NYC, he got interested in teaching and mentoring of high school students in the science field, and completed several hours of volunteer work teaching. During residency, he participated in various research projects and had one of his research topics presented at the Society for Academic Emergency Medicine (SAEM) 2020 Conference in Washington, DC.

He loves driving, playing volleyball, and soccer.

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.

Joon K. Lee, MD

Dr. Lee is a radiation oncologist dedicated to providing compassionate care that meets the highest standard of excellence.  With extensive training in 3D-CRT, IMRT, SRS/SBRT, and other leading-edge radiation treatment technologies, Dr. Lee is able to provide highly effective cancer treatments for his patients.  Formerly of Bellevue, WA, he earned his medical doctorate from the University of Illinois College of Medicine in Rockford, IL.  Following a transitional year residency at Crittenton Hospital in Rochester, MI, he completed his radiation oncology residency at Henry Ford Hospital in Detroit, MI, where he served as chief resident from 2017 to 2018.  He received many awards throughout his medical training and has published several journal articles and presented his work at numerous national conferences.  Dr. Lee is a member of the American Society for Radiation Oncology, American Brachytherapy Society, Radiological Society of North America, American Society of Clinical Oncology, and the American College of Radiology. He is also highly-proficient in Spanish and Korean.