Our founder: Mercedes Diaz

“We treat every Individual as if they were part of our own family.”

MDH Network Washington building

Our growth story

first mdh home
1983

1st Mercedes Diaz Home Established

The first MDH residential home opens in Whittier, California.

Community Integration Program
(CIP) Added

MDH expands services beyond residential care.

2007
2008

Family of Services Expansion

Supported Living Services (SLS), Independent Living Services (ILS), and Coordinated Life Services (CLS, formerly R.A. Cadia) are added.

Birth of MDH Network

Mercedes Diaz Homes becomes MDH Network, reflecting the organization's growing family of services. El Sol Medical Focus Day Program is also added.

2019
ray diaz
2022

Next Generation Leadership

Ramon Diaz becomes CEO. Coordinated Family Support (CFS) joins the family of services.

Behavioral Services Expansion

Community Integrated Behavior Management (CIBM) launches.

2025
2026

Growing the Future

MDH reaches 700+ employees and continues expanding services across Southern California.

Continuing the legacy

mercedes diaz

More than 40 years later, MDH continues the legacy of care started by Mercedes Diaz.