Wachovia Insurance Services is being renamed Wells Fargo Insurance Services USA, the result of Wells Fargo’s recent acquisition of Wachovia.

The combined business makes Wells Fargo the world’s fourth largest insurance firm and the largest bank-owned insurance brokerage in the U. S., officials said. The combination places $15.5 billion of risk premium in property, casualty, benefits, international, personal lines and life products, company officials said. It will have nearly 200 offices in 37 states and employ more than 3,700 insurance professionals

Wells Fargo Insurance Services USA will become a direct subsidiary of Wells Fargo Insurance Services next year.

In May, Wachovia Securities began using a new name, Wells Fargo Advisors, officially rebranding its business under its new parent, Wells Fargo & Co., a diversified financial services company with $1.3 trillion in assets. The brokerage businesses of Wells Fargo and Wachovia Securities have more than $900 billion in assets, nearly 16,000 full-service financial advisors and 6,000 licensed financial specialists.

Wells Fargo & Co. obtained Wachovia last Dec. 31.