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The Home Modifications for Aging and Disability Directory of Referrals (Home Maddirs) was founded in 2019 as the result of an occupational therapy student’s capstone project. Our mission is to empower people who are aging, individuals with disabilities, their families, and communities that serve them to access occupational therapy services for home modifications when and where they are needed most. Our vision is to be the most comprehensive and easily accessible source of referral information for occupational therapists who provide home modifications to people who are aging, individuals with disabilities, and their families.

Who We Are

Home Maddirs is run by a mom-and-daughter duo who are dedicated to keeping this information updated and freely accessible to healthcare professionals, consumers, and their families when needed most. Want to join us? Check out Ways to support for volunteer opportunities.

An Nguyen, OTD, ECHM, OTR/L, is the founder and lead developer of Home Maddirs. She is passionate about making sure the health information needs of older adults and their families are met. An fell in love with working with older adults while volunteering at a skilled nursing facility on weekends during college and while serving in AmeriCorps. She received a Clinical Doctorate in Occupational Therapy from Washington University in St. Louis, a Bachelor of Science from the University of Washington, and an Executive Certificate in Home Modifications (ECHM) from the University of Southern California.

Diep Nguyen, BS, Database Administrator, has over 30 years of experience in information technology management within the public sector for Washington state’s largest Department of Public Health in the Seattle metropolitan area. She is a mother of three and is excited to join her oldest daughter as a volunteer in managing the database for Home Maddirs. She received a Bachelor of Science degree majoring in Computer Science and Mathematics from the University of Montana and a Certificate in Data Science from the University of Washington.


May 2018: Initial grant funding obtained from a National Science Foundation Innovation Corps (I-CORPS) Sites Award for a multi-year project demonstration period.

June 2019: Preliminary usability testing of the mobile app completed with six occupational therapists and six older adult community members in the U.S.

October 2019: First pilot version of the mobile app and website launched.

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