Personal information for more than 25,000 Missourians in the state’s managed health plan went out to the wrong mailing addresses.
The Department of Social Services announced Monday that one of its MO HealthNet contractors, Infocrossing Inc., sent the information out between December 2009 and June of this year.
It included full social security numbers for at least half of the people affected, and the last four digits for the rest.
MO HealthNet, the state’s Medicaid program under DSS, has sent out written notices to those affected by the mailing error.
The department previously said 1,367 individuals were affected by mailings to wrong addresses between October 2011 and June 2013.
In a statement DSS said the incorrect mailing addresses were due to a software programming error.
Infocrossing is providing free credit monitoring services for two years for customers whose information was sent to an incorrect address.
A department spokeswoman declined to do a recorded interview with St. Louis Public Radio.
Follow Maria on Twitter: @radioaltman