title: Managed care: doctors hit hard at denials of service.
mesh_terms: D003625:Data Collection; D006297:Health Services Accessibility / Q000706:statistics & numerical data; D019458:Insurance Coverage / Q000706:statistics & numerical data*; D008329:Managed Care Programs / Q000706:statistics & numerical data*; D012017:Referral and Consultation / Q000706:statistics & numerical data; D016079:Refusal to Treat / Q000706:statistics & numerical data*; D014481:United States