Becoming a member of the Prader-Willi California Foundation is easy; submit your payment online or print the application below and mail it in with your payment.

Your membership dues contribute to the support and services the Prader-Willi California Foundation provides to individuals with Prader-Willi syndrome, their families, and the professionals who serve them.

No one will be denied membership because of inability to pay membership dues. If this applies to you, follow the Join offline process below.

Join online

  • Individual Membership – $40 (for Single Parent or Individual with PWS; one vote)
  • Family Membership – $55  (for Parents or Primary Caregivers; two votes)
  • Professional Membership – $70 (for Physicians, Providers, Educators, Associations; one vote)
  • Family Friend Membership – $40 (for Friends of Family; no voting privileges)
  • Extended Family Membership – $55 (for Grandparents, Aunts, Uncles, Siblings; no voting privileges)

After completing the form you will be taken to the membership product to add to your cart.

Join offline

To join offline:

  1. Print the PWCF Membership Application.
  2. Complete the Application Form.
  3. Include a check (if appropriate) for the amount of your membership.
  4. Mail the completed form and your check (if appropriate) to:

Prader-Willi California Foundation
1855 First Avenue
Suite 201
San Diego, CA 92101

What Does PWCF Do for YOU?


PWCF serves over 850 active Family and Professional Members who live or work in every county of California, providing programming and services in five key areas: Education, Support, Advocacy, Awareness, and Research. 

  • We fund PWS Specialty Medical Clinics and maintain our Medical Crisis Line
  • We provide professional training in the family home, at school sites, at residential facilities, at day programs, and in work environments
  • We run the only summer camps in California that exclusively serve people with PWS
  • We publish a quarterly newsletter, translate important documents into languages other than English, and distribute educational DVDs
  • We produce or support public awareness raising events and maintain active social media sites
  • We produce an Annual State Conference, Behavior Management Conference, IEP Empowerment Training, and other informative workshops
  • We’ve funded PWS research and encourage participation in research throughout the country
  • We hold Support Groups and help families connect with and learn from each other
  • We provide critical phone support to both families and professionals
  • We provide advocacy services to help families receive growth hormone therapy, Regional Center eligibility, aide support and other necessary services in the school setting, placement in an out-of-home residence, just to name a few
  • Whatever the need, PWCF works hard to meet it


We Know There’s So Much More That Needs to be Done!

We need more PWS Clinics. We need more support programs. We need more PWS Camps and respite options. We need more educational workshops. We need more school advocacy and training. We need more residential and work options, and more staff training. We need more research. We need more crisis response options. We need more PWS specialist professionals. We need more legislative action. We need more public awareness!


Every Penny PWCF Receives Supports a Program or Service that Serves YOU.

For the past six years PWCF’s Board of Directors has made the commitment to provide families with essential supports and services, significantly reducing our savings to do so. We can’t continue to spend more than we take in but we don’t want to cut a single program or service. Your membership renewal and ongoing support are vital to our work.

Make Connections

PWCF maintains online and in-person Support Groups for parents and professionals.

PWSA (USA) maintains several Facebook support groups.