Leadership 

Joshua Leonard

Senior Executive Director

Stonestown Family YMCA

415.242.7130

Josh has worked for the Y since graduating from college in 1997. He grew up in SF and loves serving the community that raised him.

Lauren Clapperton

Associate Executive Director

415.242.7141

Lauren gets energized and motivated by helping people realize goals and be their healthiest selves.

Theresa De Dios

Associate Executive Director

415.242.7129

Theresa has been with the Y for 12 years- building strong relationships in the community and influencing staff’s growth!

Dan de Sassure

Director of Healthy Living

415.242.7121

Dan deSaussure: an avid runner, strength trainer, and reader. I am a 10-year health and fitness professional. I have worked in a variety of capacities including: one-on-one and small group personal trainer, group exercise instructor, wellness coach, small group behavior change facilitator, and fitness program director. My passion is with helping others reach their goals and develop the confidence to make a healthy lifestyle achievable for them.  

Danielle Fuentes

Senior Director of Membership and Seniors

415.242.7115

Danielle has worked at the Y for 14 years with young and mature members and is currently the Senior Director of Membership and Seniors at Stonestown Family YMCA. She is committed to making lives better in spirit, mind, and body.

Marietta Gilman

Administrative Services Director

415.242.7122

Marietta’s passion for innovative solutions drives her leadership of admin, A/R, A/P, auditing, HR, grant administration, development, safety & volunteerism.

Lauren Jardot

Development Director

415.242.7145

Lauren has had the pleasure of working for the YMCA in various roles since 2012. She is passionate about connecting people to the Y in order to build a stronger community.

Jonathan Mar

Director of Community Programs

Stonestown Family YMCA

415.242.7144

Jonathan is the Director of Community Programs at Stonestown Family YMCA and enjoys dreaming up new and exciting activities as the summer camp director.

Grace Toyomura

Senior Director of Youth and Teens

415-242-7112

Grace has been with the YMCA since 2012. She is passionate about supporting young people in leveraging their innate abilities to achieve their fullest potential.

Alyssa Zwingman

Senior Director of Healthy Living

Currently on maternity leave.

Board Members 

Brian Korgaonkar

Sunrun

Peggy Bley

CPA

Holland Ja

Retired Telecommunications Executive

Lena McAfee

Head of Online Staffing Channels

Google

Randall Henry

Risk Management

The Cadence Group

Robert Lunbeck

Principal at Lunbeck Advisory

Trish Leung

Sr. Manager, Business Operations and Strategy

Pantheon Platform