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  • Archives for Pediatric Diseases

Pediatric Diseases

Sashi Kuppala, MD, MS


November 18, 2022

Trinity Health is pleased to welcome neonatologist Sashi Kuppala, MD, MS, to our care team in the Neonatal Intensive Care Unit (NICU). Dr. Kuppala is double board certified in neonatology and general pediatrics, with a philosophy of care that prioritizes quality measures to ensure that infants receive the highest level of care possible.

Dr. Kuppala graduated from Rangaraya Medical College in India, where he earned both his primary medical degree and post-graduate diploma in child health. He says his early training led him in the direction of neonatology. “What stuck with me is that in the NICU, you’re supporting the life of a human being who could very well go on to make an enormous contribution to human achievement.”

Dr. Kuppala did his pediatric residency at Cleveland Clinic and completed his neonatology fellowship at Cincinnati Children’s Hospital Medical Center. Later, to enhance his expertise he earned a Master of Science in Healthcare Quality and Safety Management from Thomas Jefferson University in Pennsylvania.

Dr. Kuppala practiced neonatology at hospitals in Kentucky and Indiana. He also served two years as medical director for Signature Care Network Health Insurance. Most recently, he served as staff neonatologist and medical director of the Neonatal Intensive Care Unit at The Women’s Hospital in Newburgh, Indiana.

An avid hiker and mountain climber, Dr. Kuppala and his wife, Kavita, who is also a physician, have a daughter and son.

Melissa Andreasen, FNP-C


February 4, 2022

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.

Joseph Stonehocker, CPNP-PC


February 23, 2021

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


October 14, 2020

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.

Breanna Wheeler, NNP-BC


August 28, 2018

Breanna Wheeler, NNP-BC, is a board-certified neonatal nurse practitioner and a key member of our Newborn Intensive Care team. Breanna works in collaboration with physicians, nurses and other professionals to provide comprehensive care to premature and sick newborns. A Minot native, she received her Bachelor of Science in Nursing from Minot State University in 2009. She practiced as a staff RN at Trinity Hospital for six years, working two years in the Medical-Surgical unit before joining Trinity’s NICU team, where she managed complex care to critically ill newborns and also served as a neonatal flight nurse with NorthStar Criticair. In 2016 Breanna earned a Master of Science in Nursing from Creighton University, Omaha, specializing in neonatology. A member of the National Association of Neonatal Nurses and the American Academy of Neonatal Nurses, Breanna and her husband have two children.

Anthony Udekwe, MD


August 28, 2018

Dr. Udekwe (Oo-dek-way) specializes in caring for children of all ages – from newborn to adolescent. He is experienced in managing a wide variety of problems ranging from infection and illness, to chronic conditions as well as developmental problems. He provides immunizations and regular checkups to help keep children healthy. A graduate of the University of Nigeria, Dr. Udekwe completed his residency in pediatrics at Children’s National Center and Howard University Hospital, both located in Washington, D.C. He is certified in Advanced Pediatric Life Support and Neonatal Resuscitation.

Stacy Wallin, DNP, NNP-BC


August 28, 2018

Stacy Wallin, DNP, NNP-BC, is a board-certified neonatal nurse practitioner and a key member of our Newborn Intensive Care team. Stacy works in collaboration with physicians, nurses and other professionals to provide comprehensive care to premature and sick newborns. A Minot native and Minot High School graduate, she received her Bachelor of Science in Nursing from the University of North Dakota School of Medicine and Health Sciences in Grand Forks, and practiced 12 years at Trinity Hospital, serving as a staff RN in the NICU and as a neonatal flight nurse with NorthStar Criticair. She earned her Doctor of Nursing Practice, specializing as a neonatal provider, at Creighton University, Omaha, completing her internship at the University of Minnesota Amplatz Children’s Hospital in Minneapolis. Stacy enjoys spending time with her two daughters and attending her nephews’ sporting events.

Diana Peterson, MD


August 28, 2018

A board certified pediatrician, originally from New Philadelphia, Ohio, Dr. Peterson earned her Doctor of Medicine degree from The Ohio State University College of Medicine and completed her internship and residency at Keesler Medical Center, Biloxi, Mississippi. She joined Minot Air Force Base’s 5th Medical Group as a staff pediatrician. She served as Chief of Pediatrics at the base hospital prior to joining Trinity Medical Group. She’s a Diplomat of the American Board of Pediatrics.

Friday Osuala, MD


August 28, 2018

Dr. Osuala is a pediatrician specially trained to manage the full range of physical, mental, and emotional health problems of children of all ages, including infections, injuries, chronic conditions, behavioral difficulties and developmental disorders. A graduate of the University of Nigeria College of Medicine, he worked as a general pediatrician at Tobago Regional Hospital in the West Indies for five years, where he provided outpatient and inpatient care for a Level 2 nursery and pediatric emergency room. He completed residency training in Pediatric Medicine at the Pediatric Department of Woodhull Medical Center, Brooklyn, NY.

Steven Mattson, MD


August 28, 2018

Steven R. Mattson, M.D. is a board certified internist and pediatrician.  A graduate of the University of North Dakota, he received his medical degree from Michigan State University and completed his residency at Mayo Graduate School of Medicine and the University of North Dakota Affiliated Hospitals. He has practiced in Minot since 1988. Mattson is a fellow of the American Academy of Pediatrics and the American College of Physicians.

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