Ingham Retirement Group, a national retirement plan consulting and investment advisory firm with a total of $1 billion in assets under management, has joined LPL Financial LLC, the nation’s largest independent broker/dealer, LPL announced Thursday.

Ingham specializes in delivering retirement plans for complex business situations for high-net-worth business owners, professional partners and their employees.

Founded in 1972, Ingham is based in Miami, and it started offering fiduciary services in 1991. The firm has 50 professionals on staff, including 12 financial advisors. Ingham will join the LPL Financial broker/dealer and RIA custodial platforms.