Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Katherine A Duffy, AUD

Individual provider Audiologist · NPI 1407376080

Katherine A Duffy, AUD is a Qualified Audiologist in Bel Air, Maryland. Qualified in 2017, 9 years ago. Practices with Harmony Hearing and Audiology, LLC, a 5-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
9
Licensed in
MD
In the registry since
2017
What do these letters mean?
AUD — Doctor of Audiology
A hearing specialist who tests hearing and fits hearing aids.

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Practice location Address checks out

5 Bel Air South Pkwy Ste N1411
Bel Air, MD 21015-6091
Phone: (410) 569-3800
Fax: (443) 320-9468
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence 01427 (MD)

Record details

NPI number1407376080
Entity typeIndividual (Type 1)
GenderFemale
Credentials AUD
Sole proprietorNo
NPI enumeratedJune 23, 2017
Last updated in NPPESJuly 21, 2022
Mailing address5 Bel Air South Pkwy Ste N1411, Bel Air, MD 21015-6091

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyQUALIFIED AUDIOLOGIST
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Harmony Hearing And Audiology, Llc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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