Mcmillen Family Foundation
The McMillen Family Foundation is a private family foundation supporting prevention, treatment, and recovery services for substance use in Southern California. The site presents the foundation's mission, history, directors, grantees, and grant guidelines. It links to a grant management portal for applications.
Source: Website · Mar 2026
Ideal Applicant
A California-based 501(c)(3) organization focused on substance-use prevention, treatment, recovery services, or facility improvements seeking program or capital support.
Good Fit
- • Direct services or residential recovery programs for people with substance-use disorders in California
- • Requests for program support, facility renovation, or capital improvements tied to recovery services
- • Can provide a 501(c)(3) determination letter and a recent annual report
- • Demonstrable impact in populations noted by the foundation (e.g., women, youth, veterans)
Geography
Observed giving in the latest year was entirely within California, and the foundation is based in California; historical filings show almost all dollars concentrated in-state.
Recipient Variety
The foundation funded roughly 41–44 distinct organizations each year over the observed three years, with dozens of independent grantees rather than a tiny closed circle, though some dollar concentration exists among the top recipients.
New Applicants
The foundation publishes application instructions and a portal, lists a named program officer with phone and mailing address, and funded 23 new recipients in the latest year, indicating real turnover and plausibly open access to unfamiliar applicants.
Source: Zeffy Agent · Mar 2026
