Building Info

Medical Office Building – Hospital Sisters Health System

O’Fallon, Illinois | 139,983 Square Feet

The 14-hospital Hospital Sisters Health System selected Landmark to develop this mixed-use Medical Office Building. 
The MOB and a 144-bed replacement hospital are being developed concurrently on a greenfield site in O’Fallon, Illinois.
Landmark was the full-service developer and is the property manager. Landmark is the sole owner of the MOB.

The Hospital Sisters Health System also selected Landmark to develop a 91,620 square foot Medical Office Building on the campus of the 439-bed St. John's Hospital in Springfield, Illinois.  

  • 48,547 RSF of physician office space
  • 6,648 RSF physical therapy center
  • 19,499 RSF cardiac center
  • 4,420 RSF imaging center
  • 3,622 RSF pain management center
  • 2,424 RSF infusion center
  • 11,023 RSF laboratory
  • 3,057 RSF women's center
  • 5,069 RSF wound care center
  • 23,811 RSF for residency program
  • Volunteer center and conference room on the first floor
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