Award Winning Staff


Scott W. Trenhaile, M.D.
Clinical Assistant Professor/ Orthopaedic Surgeon
Dr. Scott Trenhaile, Orthopaedic Surgeon from Rockford, Illinois, is dedicated to the continuous advancement of healthcare and specialized in knee, shoulder and elbow.

Michael Gilbertson
Physician Assistant
Michael Gilbertson, a native to Rockford, has been with Dr. Trenhaile’s team as a Physician Assistant since 2004 after graduating from Midwestern University. As part of the sports medicine department, Michael assists Dr. Trenhaile in formulating diagnoses and treatment plans as well as providing surgical assistance. Michael manages all preoperative and postoperative patient education. In his spare time he lives enjoys wakeboarding, hockey and spending time with his wife Kim and children Myles and Kylie.

Aaron King
Physician Assistant
Aaron King, formerly from Dayton, Ohio, graduated from Gardner-Webb University of North Carolina in 2020 with a Master’s in Physician Assistant Studies. Aaron has been with Dr. Trenhaile since 2020, and assists him with formulating diagnoses and treatment plans as well as providing surgical assistance. Aaron helps to manage preoperative and postoperative patient care as well as sports medicine education. Hobbies that he has consist of weightlifting, barbequing and spending time with his fiance Jennifer and family.

Nicole Meyer
Administrative Assistant
Raised in Belvidere, Nicole has served as Dr Trenhaile’s Clinical Scheduler and Administrative Assistant since 2005. Her strong background in Business Management along with her vast Healthcare experience ensures that our team works efficiently and effectively to serve each of Dr. Trenhaile’s patients with excellence.

Kari Stockton
Registered Nurse + Bachelor of Science in Nursing
Kari Stockton RN BSN: Kari was born and raised in Southern Wisconsin on a dairy farm. She received a Bachelor’s degree in Nursing from St. Anthony College of Nursing. Prior to joining Dr. Trenhaile’s team in 2004, Kari worked in the Neuro/Trauma ICU at St. Anthony Medical Center. Kari currently resides in Rockton, Illinois with her husband and enjoys hunting, fishing, and other outdoor activities.

Alyssa Fetterhoff
Alyssa Fetterhoff received a Bachelor’s degree in Exercise Science from North Central College. Prior to joining Dr. Trenhaile’s team in 2017, Alyssa worked as a rehab technician at New Millennium Medical in Belvidere, IL. Alyssa aids the Physician Assistants in designing treatment plans, as well as implementing pre- and postoperative patient care.

Ana Holleman
Ana Holleman, has been with Orthoillinois since 2005 working various roles. In 2017 she joined Dr. Trenhaile’s team to be his surgery scheduler. Ana’s key roles in surgery scheduling include setting up medical clearances for patients, notifying the facilities of the procedure and equipment, pre-certifying the surgery with insurance and comforting patients.

Michaela Johnson
Michaela Johnson BS, ROT was born and raised in Loves Park, Illinois. She received a Bachelor of Science and Minor in Spanish from Loyola University Chicago. She began working with Dr. Trenhaile at Orthoillinois in 2019. In clinic, Michaela works as a scribe and to interpret for all Spanish speaking patients. She enjoys working in healthcare and aspires to pursue further education in the future.