The hope is that the plan increases quality of care and reduces the costs. It is said that there are so many obstacles toward the end of the plan. One important one is that around 20 million of the country's population are uninsured and that around 20 million of the insured hold dual insurance coverage (quoted from Sadegh Mahsooli, the current Welfare Minister) .
It's worthy noting that the centers executing the plans are equipped with Electronic Health Record system.
My comment: Outpatient health services in Iran have been historically in the private sector and quite unregulated. It's really hard to put the doctors under a unique gate keeper system. Subspecialty level doctors are powerful agents. Their income is super high. Also, many of them have high political leverage. Having said that, expecting a full collaboration across different levels of the system may be achieved only based on some crude evaluations. General practitioners , on the other hand, are the weakest (both in terms of income, and the political power) among the physician population. The plan is revolutionary on many fronts and its full implementation is hard to achieve.
Reference: http://www.bbc.co.uk/persian/iran/2011/02/110212_l19_dastjerdi_mahsoli_doctor_family.shtml