Here is a list of local ABA companies giving services in SF. The ones that take MediCAL insurance are Positive Pathways, Goals for Autism, and Roman Empire. Of course, always double-check on the insurance question as things change often.
Positive Pathways
https://www.positive-pathways.org/
Goals for Autism
https://www.goalsforautism.com/
Roman Empire
https://www.romanempireagency.com/services/applied-behavior-analysis-aba/
KYO (was Gateway Learning Group)
https://kyocare.com/
Achieve Beyond
https://www.achievebeyondusa.com/
Steps
https://stepstherapy.com/
Elemy
https://www.elemy.com/
UCSF Star Center for ASD/NDD
https://autism.ucsf.edu/