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www.sih.netContact Us. SIH Memorial Hospital of Carbondale. 618-549-0721; SIH St. Joseph Memorial Hospital. 618-684-3156; SIH Herrin Hospital. 618-942-2171; SIH Harrisburg Medical Center. 618-253-7671; SIH System Office. 618-457-5200
Allegiance Inc. | SIH
www.askallegiance.com › SIHFor 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.
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