Trying to install Parallel IO on Unix, getting Error: Can't open included file 'mpif.h'

http://www.cesm.ucar.edu/models/pio/install.html Instructions linked here

I am on item 3. and when I run gmake this is my output

>gmake[1]: *** [pio_kinds.o] Error 1
gmake[1]: Leaving directory `/home/XXXX/ParallelIO/PIO3/pio'
gmake: *** [all] Error 2
[XXXX@YYYYY-login2 pio]$ gmake
Making dependencies for pio_kinds.F90 --> pio_kinds.d
Done updating dependencies
gmake[1]: Entering directory `/home/XXXXX/ParallelIO/PIO3/pio'
Making dependencies for pio_kinds.F90 --> pio_kinds.d
gfortran -c -DSPMD -DHAVE_MPI -DNO_MPIMOD -DNO_C_SIZEOF -DSYSLINUX -D_NETCDF -I/home/XXXX/netCDF//include -D_NOPNETCDF  -g -O2 -I/home/XXXX/netCDF//include    pio_kinds.F90
pio_kinds.F90:31: Error: Can't open included file 'mpif.h'
gmake[1]: *** [pio_kinds.o] Error 1
gmake[1]: Leaving directory `/home/XXXX/ParallelIO/PIO3/pio'
gmake: *** [all] Error 2
[XXXX@YYYY-login2 pio]$ mpif90 --showme:compile
-bash: mpif90: command not found
>[XXXX@YYYY-login2 pio]$ module avail

I have tried loading different available modules,

compilers/gcc is loaded mpi/openmpi iS loaded following a search result i found on google, I unloaded compilers/gcc and and loaded mpich-x86_64 but that still gives the error.

Does anyone know how to address this issue?