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Allegiance Benefit Plan Management, Inc. (Allegiance) is very proud to provide claims processing services to the Southern Illinois Healthcare . We have a dedicated service team and will provide you with excellent service.




For assistance regarding a claim or to pre-notify for medical services, please call the Southern Illinois Healthcare Customer Service number at 1-855-999-1052. To find a network provider in your area, click on “Find A Doctor /Provider Search” link on the left of this screen.