David Collins, PA-C


 Michael Sermon, PA-C

Michael Sermon is a certified physician assistant who joined Columbia River Health in 2015.  Michael was born and raised in Utah, where he completed his bachelor degree in Exercise Science at Utah State University in 2010.  He completed his Masters in Physician Assistant Sciences in May of 2012 at Saint Francis University in Loretto, Pennsylvania.   He then began his career in the Friona, Texas where he practiced family medicine and worked in the emergency room from 2012 – 2015.

He is particularly interested in family medicine because it allows him to be an active participant in the care of his patients through the lifespan.  He firmly believes that not everything can be fixed with a pill, and that the basic principles of regular exercise and healthy balanced diet are vital to good overall health.  He is grateful to serve the community, and looks forward to partnering with patients to help them attain their health goals.

He enjoys spending time with his wife and 3 young children.  He also enjoys the outdoors, hiking, ice hockey, mountain/road biking and playing music in his free time.


 Nathan Lystrup, FNP 

Nathan grew up in Southern California and Las Vegas. His undergraduate was completed at Nevada State College. He worked as a Registered Nurse for 8 years and then Graduated from Regis University with a Master’s degree as a Family Nurse Practitioner.

Over the years Nathan and his wife Mirazz have enjoyed the fun and surprises 6 children can bring to their lives. They enjoy outdoor activities and spending time as a family.

Alysia McDonald, PA-C

Alysia McDonald, PA-C is from rural North Dakota. She completed her undergraduate degree at the University of North Dakota and moved to Oregon with her husband, Christopher, 3 years ago. Alysia graduated from Pacific University in 2017 with her Masters of Physician Assistant Studies and is excited to build her first practice in Boardman.

Alysia and Chris enjoy the many outdoor activities the Pacific Northwest has to offer and are eager to explore Eastern Oregon with their dog, Prudence. Alysia also has a passion for art and enjoys working in various mediums. The rural and hard working agricultural community was what drew Alysia and Chris to Boardman.


Austin Higginson, PA-C

Austin was born and raised in Utah. He and his wife enjoy trying to keep up with their energetic and infinitely curious children. The Higginsons love the outdoors and spend as much time as possible exploring nature. Austin graduated from the University of Utah with a Bachelor of Arts degree in Biology. His time providing care to the residents of the William E. Christofferson Salt Lake Veterans Home as a CNA and restorative aide for over two years inspired him to continue his education in physician assistant studies at Pacific University, Oregon. He is thrilled to join Columbia River Health and is passionate about helping patients improve their lives through healthy choices.

Terri Dickens, LCSW

Behavioral Health Care Manager