Under three different health plans, Medco has been the mail order drug provider. I have never had a positive experience with them. Medco has managed to incorrectly process and invoice prescription orders 90% of the time. The problems have ranged from mailing prescriptions to the wrong address, canceling new orders with a valid doctor's prescription to invoicing the full balance when the account was setup for extended payments. In most circumstances, Medco has been unwilling to correct their mistakes which adversely affect me. I have had... read full review »