There are 12 CCOSO Regional Chapters throughout the state.  Most Chapters hold monthly meetings open to all stakeholders in the field of sex offender management.  Many provide training at their meetings and offer excellent opportunities for networking and information sharing.

If you have questions about the chapter near you, please contact the chair listed below.

  • Regional Chapter Chairs

    • Bay Area Chapter: Robert Land, PhD
      Central Valley Chapter: Elizabeth Horrillo, LMFT (916) 729-6096
      Fresno (Coalinga) Chapter: Efrat Mazin, Psy.D.
      Inland Empire Chapter: Linda Drake 951-443-2260
      Los Angeles-South Chapter: Adam Yerke, Psy.D. (213)283-4216
      North Coast Chapter: Christina Allbright, JD, (707) 672-5958
      Northern California Chapter: J. Russell York, Ph.D. (530) 949-4252
      Orange County Chapter: Lorraine Delfin,  (714)896-7474   

    • Currently, there are several Chapters in Need of Leadership, please contact Michelle Steinberger for more information on supporting these Chapters:

      Los Angeles-North Chapter: Vacant
      Central Coast Chapter: Vacant
      San Diego Chapter: Vacant
      Santa Barbara/Ventura Chapter: Vacant


Bay Area Chapter:

Monthly meetings are held either in the main meeting room at Alameda County Juvenile Hall or in the Guidance Clinic Annex, located on the grounds of Juvenile Hall, 2500 Fairmont Drive, San Leandro. If you need directions, call to have a map faxed or mailed: (925) 827-0757 or (510) 667-7717. Meetings are from 10 am until Noon on the last Monday of the month.

Orange County Chapter

Monthly meetings are held on the third Friday of most months at 9 AM.  They are located at:  The Orange County Probation Department’s Grand Avenue Office, 1001 S. Grand Ave in Santa Ana.  The Orange County Containment Team meeting is held immediately following CCOSO.  This allows therapists, probation officers, and the polygraph provider to discuss current cases, in accordance with state mandates and best practices for the supervision of sex offenders.  For more information, contact Lorraine Delfin (link sends e-mail), at 714-896-7474.

Inland Chapter:

Monthly meetings for the San Bernardino & Riverside County membership is held the first Tuesday of every month at 9 AM in the Riverside County probation office located at 1020 Iowa Ave, Riverside CA.  All our welcome.  We feature guest speakers and provide donuts!  All are welcome!