Tuwei said 49 Kenyan athletes had violated doping rules in the past five years. Kenya is still on the World Anti-Doping Agency's watch list.
"Athletes who won't conform [to the plan] won't be allowed to compete," he told about 100 top athletes at a meeting in Eldoret, 350 kilometres northwest of the capital Nairobi.
Olympic champion and London marathon winner Jemima Sumgong said the plan would help honest athletes.
"It will make it easier and faster to do a medical, now that there are six doctors whose contacts have been given to us," she said. "This is a good start to eliminate doping."
The IAAF said the initiative was not intended to vet athletes, but to provide good quality medical support.
"The network comes as part of the preventive measures intended to address the proliferation of rogue doctors, limit poor medical practice and address the supply of prohibited substances," IAAF spokesman Chris Turner told Reuters.