Universal Assessors and Staffing

Claudine Portella, MD is a Primary Care provider with Mount Sinai Health System, treating patients in the Long Island City area. Dr. Portella is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.

Stephen Johnstone, MD is a Orthopedics And Orthopedic Surgery provider with Mount Sinai Health System, treating patients in the Astoria area. Dr. Johnstone is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.