All Fresenius Locations - Illinois
- Alsip
- Antioch
- Aurora
- Berwyn
- Bloomington
- Blue Island
- Bolingbrook
- Burbank
- Canton
- Carbondale
- Chester
- Chicago
- Crestwood
- Decatur
- Deerfield
- Downers Grove
- Du Quoin
- East Alton
- East Peoria
- Elgin
- Elk Grove Village
- Elmhurst
- Evanston
- Evergreen Park
- Glendale Heights
- Glenview
- Gurnee
- Harrisburg
- Hazel Crest
- Hoffman Estates
- Joliet
- Kewanee
- Lake Bluff
- Lombard
- Macomb
- Marion
- Mchenry
- Melrose Park
- Merrionette Park
- Metropolis
- Mokena
- Morris
- Naperville
- Niles
- Norridge
- Oak Park
- Olympia Fields
- Orland Park
- Oswego
- Ottawa
- Pekin
- Peoria
- Plainfield
- Pontiac
- Rolling Meadows
- Round Lake
- Sandwich
- Skokie
- South Holland
- Spring Valley
- Streator
- Villa Park
- West Chicago
- Westchester
- Willowbrook