In 1971 a large three story addition was built on the east end of the hospital. This allowed IMH to expand to accommodate ninety-four patients. The new addition also included
space for an Emergency Department, Surgery, X-Ray, Laboratory, Physical Therapy and Purchasing.
In 1996 the IMH Specialty Clinic and North Entrance were completed as the first phase of a three phase construction project. The second phase, opened in
2001, was a rooftop helipad, patient transfer elevator, ambulance entrance, and back hallway connecting the Emergency Department to Medical imaging. The third and final phase
was a new surgery center with four state of art surgical suites and two procedure rooms.