Massachusetts MDs say Blue Shield plan locks them into unfair contract.
D054598:Blue Cross Blue Shield Insurance Plans / Q000458:organization & administration*; D003284:Contract Services / Q000191:economics; D005251:Fees, Medical; D007357:Insurance, Physician Services / Q000458:organization & administration*; D008404:Massachusetts; D010820:Physicians; D012051:Reimbursement Mechanisms