HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / NY

MARY KATHRYN GIANNICO, PA

PHYSICIAN ASSISTANT

Graduated: 2021

NPI: 1154908390

Practice Locations (1)

JOHN T MATHER MEMORIAL HOSPITAL

75 N COUNTRY RD

PORT JEFFERSON, NY 117772119

Source: CMS National Downloadable File, September 2026.

MARY GIANNICO, PA | HealthCareAtlasUSA