Find Maryland HMO and PPO Health Insurance Plan Ratings for 2020. The only plan to get a full 5-star rating was Kaiser Permanente HMO. Compare KP with Aetna HMO and PPO, CareFirst BlueChoice and GHMSI, Cigna, MAMSI PPO, MD-IPA, Optimum Choice and United Healthcare HMO and PPO. Member satisfaction (CAHPS), getting appointments, flu shots, and many clinical measures of care such as Diabetes, breast cancer screening, behavioral health, well child care are some of the measures. Quality scores are 80% of the overall performance rating. Check Consumer Ratings, Clinical Ratings and Provider Network Ratings that make up the total score. Maryland Health Plan guide is by the Maryland Health Care Commission, updated Dec. 5, 2020.