Sarah Martinez, MA, CRC

Sarah Martinez, MA, CRC

Executive Director

Sarah Martinez is the Executive Director at A2I. She earned her Bachelor‘s degree in Human Services from Purdue University and her Master’s degree in Rehabilitation and Mental Health Counseling from the University of Iowa. Prior to joining the world of Independent Living, she was a Rehabilitation Counselor with Iowa Vocational Rehabilitation Services serving adults and youth in transition.

Heritage Area Agency for Aging Board of Directors - Appointed January 2020
SILC Representative on the State Vocational Rehabilitation Council - Appointed February 2020

Kiersten Onanga, BSW

Kiersten Onanga, BSW

Independent Living Specialist

Kiersten graduated from Mount Mercy University with a degree in Social Work. She started working at A2I in May of 2016 providing services to those living with disabilities. Kiersten loves talking to people and hearing their stories.

Some of Kiersten’s favorite things are hanging out with her awesome family, going to zoos and eating pizza!

Darby Eiben-Prokop

Darby Eiben-Prokop

Independent Living Specialist

Darby Eiben-Prokop works out of our Cedar Rapids office and serves our northern counties. Darby is from the Cedar Rapids area and has lived there throughout his adult life. He has worked in human services for nearly ten years, primarily with non-profit HCBS and SCL providers, and expresses a passion for disability advocacy. This "calling" was ingrained in Darby from a young age while observing his parents who were actively involved in volunteering for local homeless shelters, employed with non-profits, and serving on community center board of directors. Darby enjoys his free time connecting with family and friends, attending sporting events (especially the Hawkeyes), and spending time with his son.

Margaret Nienaber, BS

Margaret Nienaber, BS

Youth Outreach Coordinator

Margaret graduated from the University of Iowa with a Bachelor’s degree in Therapeutic Recreation. Margaret has over a decade of experience working in the human service field, and is passionate about helping others find their happiness and strengths in life.

Margaret enjoys spending time outdoors with her dog, Murray, live music, exploring new places, and secondhand thrifting. .