GERTI Leadership Team

Chris OsbornChris Osborn, RN, MBA, LACHA - Chief Executive Officer

Chris is a registered nurse and licensed adult care home administrator. He joined Evergreen as a GERTI Instructor in 2006.  He has worked in long-term care since 2000 in various roles; CNA, Charge Nurse, Quality Assurance Nurse, and Director of Nursing. Chris served as the Chief Operating Officer at Evergreen before accepting the CEO role in 2015. He received his Bachelor of Science in Nursing from Pittsburg State University and Master of Business Administration from Baker University. Chris may be contacted by phone at (913) 477-8227.



Karen Craig

Belinda Vierthaler, LMSW, LACHA - Director of GERTI

Belinda received her bachelors and masters degrees in social work from the University of Kansas. In 2001, she began her career in senior living as an assisted living operator.  It was during this time that she solidified her passion to ensure residents are the center of everything we do. She also has served as a nursing home administrator and executive director.  She was appointed as Kansas State Long-Term Care Ombudsman in 2009 by Governor Mark Parkinson. Her advocacy continued as she instructed future assisted living operators and nursing home administrators at Johnson County Community College.  Her most recent position, prior to GERTI, was the Community Leader at The Piper Assisted Living in Kansas City, KS. Belinda may be contacted by email at [email protected] or by phone at (913) 477-8242.


Shawna WalbergShawna Walberg, B.A. - ELI Business Coordinator

Shawna received her Bachelor of Arts in Communication Studies from the University of Kansas. She has over 20 years of experience in research, development, writing, and delivering computer software training. Shawna may be contacted by email at [email protected] or by phone at (913) 477-8251.