Ln recent decades, health care costs have dramatically increased, while hea
lth care organisations have been under severe pressure to provide improved
quality health care for their patients. Several health care administrators
have used discrete-event simulation as an effective tool for allocating sca
rce resources to improve patient flow, while minimising health care deliver
y costs and increasing patient satisfaction. The rapid growth in simulation
software technology has created numerous new application opportunities, in
cluding more sophisticated implementations, as well as combining optimisati
on and simulation for complex integrated facilities. This paper surveys the
application of discrete-event simulation modeling to health care clinics a
nd systems of clinics (for example, hospitals, outpatient clinics, emergenc
y departments, and pharmacies). Future directions of research and applicati
ons are also discussed.