Find California HMO, PPO and Medical Group ratings report card for 2019-2020. Kaiser Permanente of Southern California’s HMO Plan and Sharp Health Plan HMO received the highest ratings. The lowest rating went to Aetna PPO. Compare 10 largest California HMO health insurance plans: Aetna, Anthem Blue Cross HMO, Blue Shield, Cigna, Health Net, Kaiser Permanente Northern and Southern CA regions, Sharp Health Plan, United Healthcare and Western Health Advantage. Compare 6 of the largest PPOs: Aetna, Anthem Blue Cross, Blue Shield, Cigna, Health Net Life Insurance Company, United Healthcare. Clear, simple star system (5 stars = excellent; 4 stars = very good; 3 stars = good, 2 stars = fair; 1 star = poor) used for overall rating. Actual performance scores are not given, but may be available through NCQA. Quality measures (based on HEDIS scores) for asthma, cancer screening, child health, chlamydia screening, diabetes, heart care, maternity care, behavioral and mental health, and other expected care. Member satisfaction stars also shown. Complaint rates are reported for health plans in a separate report. Nearly 200 Medical Group ratings also provided by county for the larger groups of doctors. For example, nearly 60 different Kaiser Permanente medical groups are included; Sutter, Scripps, Sharp and many more. Prepared by the California state Office of the Patient Advocate (OPA), published December 2019.