HOME YOU ARE HERE Affiliate Organizations Memberships Alameda Contra Costa Medical Association California Medical Association American Medical Association Hospital Affiliations Summit Medical Center Insurance Affiliations North Oakland Medical Clinic is a provider for many PPO's, HMO's, MPN's on affiliate and other Private Insurances. Alta Bates Medical Group Alameda Alliance for Health Aetna Blue Cross, PPO Blue Cross, Medi-Cal HMO HealthNet LifeGuard Champus-TriCare MediCare Medi-Cal And most other Insurances