Is the OP asking for public transport?
From Puerto Plata to Samana, Transportes Papagayo 1-829-376-8346 or 1-809-749-6415 leaves Puerto Plata Hospital at 6:30 am once a day for Sanchez and Samana and returns from Samana at 2 p.m. They stop in front of Janet's Cabarete and will stop anywhere in Cabarete/Sosua or along the way if you call them (Spanish speaking Salvador). No Web Site, cost approx. 350 RD.
The other bus in the morning, Transporte El Canario, leaves at 6.00 am from Puerto Plata heading for Sanchez and Samana. 809-291-5594.
In both cases you need to get off at the airport turn off and walk the long walk to El Catey.