- Access to Independence – San Diego
- American Disabled for Attendant Programs Today – Northern California (ADAPT)
- American Disabled for Attendant Programs Today – Southern California (ADAPT)
- Alliance of Catholic Healthcare
- American Academy of Medical Ethics (AAME)
- American College of Physicians – American Society of Internal Medicine
- American College of Pediatricians
- American Medical Association
- American Nursing Association
- Association of Northern California Oncologists (ANCO)
- Association of Programs for Rural Independent Living (APRIL)
- Autistic Self Advocacy Network (ASAN)
- Berkeley Commission on Disability
- California Catholic Conference
- California Chapter of TASH (CalTASH)
- California Disability Alliance (CDA)
- California Family Alliance
- California Family Council
- California Foundation for Independent Living Centers (CFILC)
- California Latino Medical Association
- California Nurses for Ethical Standards (CNES)
- California ProLife Council
- California Right to Life Education Fund
- California State Council on Developmental Disabilities
- California State Independent Living Council
- Californians for Disability Rights (CDR)
- Catholics for the Common Good
- Christian Medical and Dental Association
- Clergy and Laity United for Economic Justice
- Clergy Community Coalition
- Coalition of Concerned Medical Professionals
- Community Resources for Independent Living (CRIL)
- Communities Actively Living Independents and Free (CALIF)
- Communities United in Defense of Olmstead (CUIDO)
- Concerned Women for America
- Concilio ProVida de California
- Crusade for Life
- De La Salle Institute
- Democrats for Life
- Disability Action Center (Formerly Independent Living Services of Northern California)
- Disability Rights Center
- Disability Rights Education & Defense Fund (DREDF)
- Disability Rights Enforcement Education Services (DREES)
- Disability Section of the American Public Health Association
- FREED, Center for Independent Living
- Hispanics for Life
- IHSS Consumers’ Union
- Independent Living Center of Southern California (ILCSC)
- Independent Living Resource Center San Francisco (ILRCSF)
- Inland Empire Concerned African American Churches
- International Life Services
- Joni and Friends
- Justice for All (JFA)
- La Raza Roundtable of Santa Clara County
- League of United Latin American Citizens (LULAC)
- Life Priority Network
- Life Legal Defense Fund
- Medical Oncology Association of Southern California (MOASC)
- National Council on Disability
- National Council on Independent Living (NCIL)
- National Spinal Cord Injury Association
- Not Dead Yet – California Chapter
- Not Dead Yet (NDY)
- Oakland Mayors Commission on Human Relations
- Patients Rights Council
- Peers Envisioning and Engaging in Recovery Services (PEERS)
- Physicians for Compassionate Care
- Placer Independent Resource Services, Inc.
- Pro-Life America
- Right to Life League of Southern California
- Scholl Institute of Bioethics
- Second Thoughts, People Living with Disabilities Opposing Assisted Suicide
- Seniors Against Suicide
- Signs of Life in Hollywood
- Silicon Valley Independent Living Center
- Southern California Cancer Pain Initiative
- TASH
- The Arc of California
- The Arc of the United States (for people with intellectual and developmental disabilities)
- The Center for Bioethics and Culture Network (CBC Network)
- The Oaks Group
- West Coast Pro Life
- Western Service Workers Association
- World Association of Persons with Disabilities (WAPD)
- World Institute on Disability (WID)