159 Margaret St., Suite 103. Plattsburgh, NY 12901-1874. 518-562-0151. Welcome to Plattsburgh Primary Care Pediatrics, where children come first, and where our pediatricians and staff work together with patients and families to provide exceptional medical care for the children and youth in the Plattsburgh area.Patient Portal‧Home‧Pediatrician Staff‧Our Services‧Our Team‧Office Info/Contact us.