Insurance Group (NYSE:MIG), reported a 92 percent increase in net income to $13.5 million, or 24 cents per diluted share, in the first quarter 2009 that ended March 31, up from $7.1 million, or 19 cents per share for the same period in 2008.

Net operating income increased 131 percent to $16.3 million, or 28 cents per diluted share, up from $7.1 million, or 19 cents per diluted share, in the first quarter of 2008.

“We are pleased with the results for the first quarter, particularly our net operating income,” said Robert Cubbin, Meadowbrook’s CEO.

First quarter written premiums increased 76 percent to $160 million from $90.5 million in the same period in 2008.

“We remain optimistic about our current revenue growth prospects and the development of additional revenue enhancing synergies from the merger,” Cubbin said.

In early 2008, Meadowbrook acquired ProCentury Corp., a Westerville, Ohio-based insurance company.

Meadowbrook is a risk management company that specializes in professional and trade associations and small to medium-sized businesses. ProCentury is a specialty property and casualty insurance holding company.