BrokerCheck is a free tool to help you research backgrounds of brokers, brokerage firms, investment adviser firms and advisers.

BrokerCheck pulls information about brokers and brokerage firms from the Central Registration Depository (CRD).
BrokerCheck pulls information about investment adviser firms and representatives from the Securities and Exchange Commission’s Investment Adviser Registration Depository (IARD) database.
visit BrokerCheck – http://brokercheck.finra.org/