Board of Directors

CHA is deeply grateful to our Board of Directors for their support and leadership. Our Board includes a dynamic group of individuals with experience serving as health advocates, senior citizens and/or disability community advocates, attorneys, professors, researchers, business and non-profit executives, and Health Insurance Counseling & Advocacy Program managers.

Executive Committee

Christina Dimas-Kahn, MACP, Chair
Douglas Shaw, Vice Chair
Leza Coleman, Treasurer
Jennifer Webb, Secretary

Board Members

Diane Caradeuc
Meredith Chillemi
Lorenda Sanchez
John Tan
David Wilder
Ben Winker


Catherina Isidro- headshot-modified

Executive Director

Catherina Isidro has over 20 years of  experience in the private and non-profit sectors which have given her a keen understanding of the legislative process and association management.

SMP Project Director

Micki Nozaki joined our CHA staff with the California Senior Medicare Patrol project in the fall of 2011.

Training & Policy Specialist Consultant

Bonnie Burns has over thirty years of experience in Medicare, Medicare supplemental insurance, and
long-term care insurance.

Training Specialist

Tatiana Fassieux is a Training Specialist for California Health Advocates (CHA) an organization dedicated to Medicare advocacy and education for Californians.

SMP Case Intake and Special Projects Manager

Jasmine Suo brings over 20 years of non-profit executive and administrative
support experience.

SMP Outreach Specialist and Case Manager

Sandy Morales joined our CHA staff with the California Senior Medicare Patrol project in February of 2013.

Karen Joy Fletcher, Publications Consultant

Publications Consultant

Karen Joy Fletcher has over 20 years of experience in Medicare training, education and advocacy and has served as CHA’s Publications Consultant since 2004.

Cassandra at graduation

Administrative Assistant

Cassandra Ng distributes and maintains inventory of educational materials to our partners, doing research for projects, editing articles, updating and maintaining data, and contacting assisting with our fraud hotline.

Join us for an educational webinar

Medicare Fraud and How to Protect Your Benefits

Aug 23, 2022 » 10 - 11am PT

Learn More