efine command{
command_name check_nrpe_lb
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ -p $_HOSTTCPORT$
}

define host{
use linux-remote
host_name WS1
address 1.1.1.1
_tcport 5667
}

define service{
use generic-service,srv-pnp
host_name WS1
service_description Server Load
check_command check_nrpe_lb!check_load
}

Source: remote NRPE help on different port – View topic • Nagios Support Forum