Marsh & McLennan

Bill Brennan [email protected] (858)587-7404



Barney & Barney, a Marsh & McLennan Agency LLC Company

What began as a small insurance company started by two San Diego brothers in 1909 has turned into one of the largest brokerages in the United States. How did we get here? Simply put, we’ve put our clients’ needs first for 100 years.


Bill Brennan joined Barney & Barney in 1996 and became a Principal in 2004. In 2014, Barney & Barney was acquired by Marsh & Mclennan Agency and is now part of one of the largest insurance brokerage operations in the world.

Marsh & McLennan Agency is one of the nation’s leading insurance brokerages, providing comprehensive risk management and employee benefit solutions to organizations of all sizes. Designed to meet the unique needs of growing companies, MMA epitomizes the high-touch service model typical of a local consultant while providing access to the global resources of the world’s leading insurance broker, Marsh. Our clients truly benefit from the best of both worlds.

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