Marsha Johnson has been a part of the medical community in Casper since 1993. She began her nursing career at Wyoming Medical Center as a BSN from University of Jamestown in ND and then completed her education at the University of WY in 2002 with a Masters in Nursing, Advanced Practice Registered Nurse. She is certified from the American Nurses Credentialing Center as a Family Nurse Practitioner. Marsha has worked in different areas throughout her career including cardiology and nephrology. She joined Rocky Mountain Infectious Diseases in 2009.

Marsha is married to her husband, Chris and they have 2 children, Brandon and Brooke. She enjoys the many outdoor activities WY has to offer including hunting, hiking, camping, snowmobiling, and skiing.