CEO & Directors

Rhea K. Mac
Interim Chief Executive Officer

Rhea K. Mac, a social equity consultant with Nonprofit Growth Advisors (NGA) will serve as Interim CEO starting July 1, 2024. Rhea is a dedicated Angeleno with expertise in non-profit organizations, social equity, and homelessness and looks forward to applying her expertise to serve and support AADAP during this transition. Koya Partners will conduct an executive search for AADAP’s next CEO, prioritizing finding a match that will value the rich history of the organization and carry forward AADAP’s mission.

Meet the Directors

Aris Tubadeza, M. SC
Administrative Director

Paulina Hong
Development Director

Jenny Pham
Fiscal Director

Angela Bartolome, LCSW
Clinical Director

James Stinson
Treatment Director

Jose Esqueda
Youth and Family Programs Director

Jeanne Shimatsu
Prevention Director

Louis Lewis
Employment Access Director

Dr. William King, MD
Medical Director

Dr. David Yoon, MD
Medical Supervisor

Board of Directors

Michael Yoshiba
Richards, Watson, & Gershon
Chairman

Michael Yoshiba has been on the AADAP board for over 12 years.   He is an avid Dodgers fan and a whiskey connoisseur.

He currently is a lawyer at Richards, Watson, & Gershon. Prior to joining Richards, Watson & Gershon in 2001, Michael represented the State of California, Department of Transportation, in its Legal Division for over six years as a Deputy State Attorney and before that, as a right-of-way agent for over ten years.

Meet the Board

William Kumagai
Vice President, Gartner Inc. (Ret.)
Vice Chairman

Nicole Johnson, LMFT 
Family Services Advocate, McKinley Mental Health Services
Treasurer

Steven Arellano, Sr.
Sergeant of Police, Los Angeles Police Department (Ret.)
Secretary

Saundra Bryant
Executive Director, All Peoples Community Center

Victor Harewood, Jr.
Broker

Ty Carter
Healthcare Advisor, Your Choice Insurance Services

Kobe Kobayashi
VP, Portfolio Manager, Preferred Bank

Stephanie Cherng
Project Manager, SoCalGas

John Saito, Jr.
Project Manager & Sensei, Murakawa Communications

April Li
Director of Financial Reporting & SOX Governance, Southern California Edison

Victoria Leonido
Supplier Diversity Project Manager, SoCalGas

Dr. Warren Yamashita, MD MPH FAAFP
Director of Addiction Medicine and Family Physician, Harbor Community Health Centers