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 / CA

HANNAH NIEN, MD

DIAGNOSTIC RADIOLOGY

Medical school: TUFTS UNIVERSITY SCHOOL OF MEDICINE

Graduated: 2009

NPI: 1417183203

Practice Locations (2)

MORAN ROWEN AND DORSEY INC

31872 COAST HWY

LAGUNA BEACH, CA 926516773

9494991311

MORAN ROWEN AND DORSEY INC

1100 W STEWART DR, ST JOSEPH HOSPITAL

ORANGE, CA 928683891

7147718171

Source: CMS National Downloadable File, September 2026.

HANNAH NIEN, MD | HealthCareAtlasUSA