Maggie Sem, PA-C, is a board-certified physician assistant and a member of our emergency/trauma medicine team, committed to providing high-quality care to patients with emergent and life-threatening conditions. A native of Minot, she earned a bachelor’s degree in biology and psychology from the University of Minnesota, Duluth, and completed her Master of Physician Assistant Studies at the College of St. Scholastica, Duluth. A member of the American Academy of Physician Assistants, Maggie previously worked as a Certified Nursing Assistant at Trinity Health’s walk-in clinic. Outside of work, Maggie enjoys golfing and traveling.
Trinity Hospital
Baylie Nagel, CRNA
Baylie Nagel, CRNA, is a certified registered nurse anesthetist who provides safe and effective anesthesia care to patients undergoing a wide range of surgical procedures. A native of southeastern North Dakota, Baylie earned a Bachelor of Science in Nursing from North Dakota State University, Fargo, before obtaining a Doctor of Nursing Practice with a specialization in Nurse Anesthesia from the University of North Dakota, Grand Forks. Before her current role as a CRNA, Baylie spent six years working in Trinity Health’s intensive care unit as a charge nurse and staff nurse. Outside of work, she enjoys spending time with family, traveling and hiking.
Kyla Snyder, CRNA
Kyla Snyder, CRNA, is a certified registered nurse anesthetist who provides safe and effective anesthesia care to patients undergoing a wide range of surgical procedures. A native of Minot, Kyla earned a Bachelor of Science in Nursing from Minot State University. From there, she earned a Doctor of Nursing Practice with a specialization in Nurse Anesthesia from the University of North Dakota, Grand Forks. Kyla has more than 12 years of nursing experience at a variety of healthcare systems across North Dakota and the country, with the majority of her career spent in intensive care and rural emergency medicine. Outside of work, she enjoys spending time with her family and friends.
Quijuana Gadd, FNP-C
A member of our emergency/trauma medicine team, Quijuana Gadd, FNP-C, is a board-certified nurse practitioner who provides care to patients with a variety of emergent illnesses or injuries. A native of Washington state, she earned a Bachelor of Science in Nursing from Walla Walla University, WA, before earning a Master of Science with a specialization in Family Nurse Practice from the University of North Dakota, Grand Forks. Quijana has served in various roles with Trinity Health for over 10 years, including Medical Floor RN, ICU RN and most recently, Flight RN. A member of the American Association of Critical-Care Nurses and the American Association of Nurse Practitioners, she enjoys spending time with her family, camping and hiking in her free time.
Teri Thiel, FNP-C
A member of our hospital medicine team, Teri Thiel, FNP-C, is a board-certified nurse practitioner who provides timely, coordinated care to hospitalized patients. She received her master’s degree in nursing education and family nurse practice from Chamberlain University College of Nursing. Before her current role with the hospital medicine team, Teri worked as a charge nurse with Trinity Health for over five years, where she coordinated staffing assignments, developed patient care plans and trained nursing staff. A native of Minot, Teri enjoys spending time with her family, camping and traveling.
Leisa Peterson, FNP-C
A member of our emergency/trauma medicine team who brings more than 30 years of nursing experience to Trinity Health, Leisa Peterson, FNP-C, is a board-certified nurse practitioner who provides care to patients with a variety of emergent illnesses or injuries. A native of Saskatchewan, Canada, Leisa earned a Bachelor of Science in Nursing from Minot State University and later obtained a Master of Nursing in Family Nurse Practice at the University of North Dakota, Grand Forks. Throughout her distinguished career, she has gained clinical rotation experience with Trinity Health family medicine and has served patients for the organization as an emergency room staff nurse and assistant nurse manager. A member of the American Association of Nurse Practitioners, the North Dakota Nurse Practitioner Association and the American Nurses Association, Leisa enjoys spending time with family, gardening and reading in her free time. She is excited to once again serve and care for the people of the Minot community.
Ty Weis, MD
Ty Weis, MD, is board-certified in anesthesiology, providing safe and effective anesthesia care to patients undergoing a wide range of surgical procedures. A native of Sioux City, IA, Dr. Weis received his Doctor of Medicine degree from the University of Minnesota-Minneapolis School of Medicine. From there, he completed an anesthesiology residency at Mercy Hospital of Pittsburgh, PA, and a cardiac anesthesia fellowship at Western Pennsylvania Allegheny Health System, PA. An established provider with over two decades of experience, Dr. Weis previously served as a cardiothoracic anesthesiologist and as vice-chairman of the anesthesia department at Forbes Regional Hospital, Monroeville, PA, before joining Trinity Health. He enjoys woodworking, photography, cooking and biking in his free time.
Maura Holm, DO
A member of our emergency/trauma medicine team, Maura Holm, DO, provides care to patients with a variety of emergent illnesses or injuries. A Minot native, Dr. Holm earned a Bachelor of Science degree from the University of North Dakota, Grand Forks, before obtaining her Doctor of Osteopathic Medicine from Idaho College of Osteopathic Medicine, Meridian. She then completed an emergency medicine residency at Western Michigan University, Kalamazoo, where she also gained experience as a flight physician, medical control physician and served as a clinical instructor of emergency medicine at Western Michigan University School of Medicine. A member of the American College of Emergency Physicians and the Emergency Medicine Residents Association, Dr. Holm looks forward to serving the community in which she was raised. In her free time, she enjoys spending time with family, going to the lake and traveling.
Eunice Sisa, MD
A member of our hospital medicine team, Eunice Sisa, MD, is a compassionate and dedicated hospitalist who provides high-quality patient-centered care during critical and vulnerable moments of hospitalization. She is committed to ensuring each patient receives thoughtful, coordinated medical attention throughout their hospital stay. Originally from Ghana, Dr. Sisa earned a bachelor’s degree from the University of Ghana and a Bachelor of Medicine and Bachelor of Surgery from the University of Ghana Medical School, Accra. She completed her internal medicine residency at St John’s Episcopal Hospital-South Shore, Far Rockaway, NY. Dr. Sisa is a proud member of the American College of Physicians. She is passionate about guiding patients and their families through some of their most challenging moments, offering compassion, hope and unwavering support when needed. Outside of work, Dr Sisa enjoys spending time with family, playing tennis and traveling.
Angela Frazier, CRNA
Angela Frazier, CRNA, is a certified registered nurse anesthetist who provides safe and effective anesthesia care to patients undergoing a wide range of surgical procedures. A native of Massachusetts, Angela earned a Bachelor of Science in Nursing from Villanova University. From there, she received a Master of Science in Nurse Anesthesia from Georgetown University. A member of the American Association of Nurse Anesthetists, she enjoys working out, taking road trips and watching Boston sports teams in her free time. In December, she welcomed her first baby into the world. Angela has a wide range of experiences that she is looking forward to bringing to Trinity Health.









