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 / MD

KATHERINE A DUFFY, AU

QUALIFIED AUDIOLOGIST

Graduated: 2017

NPI: 1407376080

Practice Locations (1)

HARMONY HEARING AND AUDIOLOGY, LLC

5 BEL AIR S PKWY, SUITE N1411

BEL AIR, MD 210156091

4105695999

Source: CMS National Downloadable File, September 2026.

KATHERINE DUFFY, AU | HealthCareAtlasUSA