What is the Geographical Practice Cost Index (GPCI)?

a. A fee charged in the state of Florida because of the high concentration of older population
b. A fee charged in the case of natural disasters (floods, tornadoes, other violent weather)
c. A fee usually charged by similar providers for the same procedure in the same geographic area during a specified period of time
d. A fee charged by providers because more and more patients buy pharmaceuticals in Canada

C