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

CATHLEEN C HEFFERNAN, MD

DIAGNOSTIC RADIOLOGY

Medical school: NEW YORK UNIVERSITY SCHOOL OF MEDICINE

Graduated: 2001

NPI: 1164558292

Practice Locations (2)

NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES PC

1500 ROUTE 112

PORT JEFFERSON STATION, NY 117768054

6317513000

NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES PC

48 ROUTE 25A

SMITHTOWN, NY 117871431

6317513000

Source: CMS National Downloadable File, September 2026.

CATHLEEN HEFFERNAN, MD | HealthCareAtlasUSA