To contact the Michael Hoefflin Foundation for Children’s Cancer, please call or email our office directly.

If you are a MHF Patient Family or social worker, please contact:
Lety Garcia or Anita Seibert.

If you are interested in volunteering, please email


Gillian Stone
Executive Director

Shaunie LeBouef
Office Manager

Lety Garcia
Patient Family Liaison

Anita Seibert
Outreach Program Coordinator

Michael Hoefflin Foundation
26470 Ruether Avenue
Unit 101
Santa Clarita, CA91350

Office Hours
Monday – Thursday
Closed on Fridays
9:00AM – 4:00 PM