Municipal. The municipalities of Jardim do Seridó-RN, Riacho de Santana-RN, Venha Ver-RN and Vera Cruz-RN.
Analysis Unit: 
Health Care Model, the strengthening of Primary Health Care and work process in small municipalities with high social vulnerability.
Major results: 
1. Improvements in the scope of work process and teamwork. 2. A joint planning for the care of users is observed, with integral health care for users as the objective. 3. The presence of the cooperating doctor as the catalyzing factor is a significant feature in strengthening Primary Health Care. 4. There are advances in the access, use of services, and health care coverage after scheduled hours. 5. There is improvement in the organization of health care to guarantee access to the health team through house calls. 6. Longitudinality in a regular health care contribution by teams with PMM assistance.
Implementing Unit: 
PAHO/WHO, UFRN researchers.
It is a qualitative and quantitative case study. 4 Municipalities were selected under the established criteria. Analysis of quantitative indicators. The field research includes direct observations during visits to services; focus groups.
Recommendations / Challenges: 
1. PMM needs to increase the exposure of the uniqueness of the experiences of its professionals, such as the transformation potential that stems from the interaction among themselves, the staff, and users. 2. There is a need to reconfigure health care in networks with the presence of cooperating doctors in territories that lack doctors. 3. The coordination between health care and its management constitutes a challenge, a dichotomy that needs to be resolved. 4. There is a need for skilled professionals who are motivated and possess specific training for Primary Health Care (PHC) work.
An analysis was made of the realities of health care in small municipalities with a low Human Development Index, exclusively the action of PMM doctors who have attained a high coverage. PMM results show a mostly rural population at locations where the assignment of doctors becomes more difficult. Quantitative and qualitative indicators were analyzed and the PMM was found to be the central element in the reformulation of the Family Health Program (FHP) work process and the strengthening of Primary Health Care.