Provider Profile
Katherine A. Duffy, AUD
Unclaimed ProfileAbout Dr. Duffy
Listed in the NPI registry as an audiologist, Katherine A. Duffy, AUD practices in Bel Air, MD. According to Medicare claims data, Katherine cared for 193 Medicare patients across 195 services. The services billed most often include comprehensive hearing and speech recognition test, test for eardrum and muscle function, and placement of ear probe for computerized measurement of repeated sounds with interpretation and report.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (410) 569-3800
- Email not available
Practice Locations
5 BEL AIR SOUTH PKWY STE N1411
Bel Air, MD 21015
Conditions Supported and Services
Within Audiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Earwax buildup
- Hearing loss
- Tinnitus
- Vertigo
Balance & Inner Ear
- Balance Problems and Fall Risk
- Benign paroxysmal positional vertigo
- Ménière's disease
- Motion sickness
- Vestibular neuritis
Brain & Hearing
- Auditory Processing Disorder
Dizziness & Balance
- Land Sickness
- Persistent Dizziness
- Sound-Induced Dizziness
- Vestibular Migraine
- Weak Balance Nerve
Ear & Hearing
- Acoustic Neuroma
- Age-Related Hearing Loss
- Difficulty Hearing in Noise
- Eustachian tube dysfunction
- Fluid in the Ear
- Hearing Loss in One Ear
- Hearing Own Voice Echoing
- Noise-Induced Hearing Damage
- Otosclerosis
- Perforated eardrum
- Sudden Hearing Loss
Ear Conditions
- Cholesteatoma
Ear Pressure
- Airplane Ear
Ear Symptoms
- Ear Canal Itching
- Ear Clicking or Popping
Hearing
- Auditory Neuropathy
- Autoimmune Inner Ear Disease
- Conductive hearing loss
- Hearing Double Pitches
- Hearing Loss from Medications
Infections
- Ear infection
- Swimmer's ear
Pediatric Hearing
- Newborn Hearing Problems
- Toddler Speech Delay from Hearing
Sound Sensitivity
- Hatred of Specific Sounds
- Hearing Phantom Music
- Pulsing Sound in Ear
- Sensitivity to Normal Sounds
Procedures & services
Most searched procedures
- Balance testing
- Earwax removal
- Hearing aid fitting
- Hearing test
Balance Testing
- Gait and balance training
- Rotary Chair Balance Test
- VEMP Balance Testing
Balance Treatment
- Epley Maneuver
- Vestibular Rehabilitation
Device Maintenance
- Earmold Replacement
Device Support
- Bluetooth Hearing Aid Pairing
Diagnostic Exams
- Acoustic Reflex Test
- Inner Ear Pressure Test
- Video Otoscopy
Diagnostics
- Auditory Brainstem Response Test
- Auditory Processing Disorder Testing
- Inner Ear Hair Cell Test
- Tympanometry
- VNG Eye Movement Balance Test
Hearing Aids
- Assistive Listening Device Consultation
- Ear Mold Impression
- Hearing Aid Consultation
- Hearing Aid Demo and Trial
- Hearing Aid Repair and Cleaning
- Hearing Aid Reprogramming
- Invisible Hearing Aid Fitting
- Over-The-Counter Hearing Aid Check
- Real-Ear Measurement
- Single-Sided Deafness Hearing Aid Fitting
Hearing Evaluations
- Bone Conduction Hearing Test
- Pure Tone Hearing Test
- Speech Recognition Hearing Test
Hearing Protection
- Custom Earplugs
- Custom Motorcycle Earplugs
- Custom Shooting Earplugs
- Custom Sleep Earplugs
- Custom Swim Plugs
- Musician Earplugs
Hearing Rehabilitation
- Auditory Training Therapy
Implants
- Bone Anchored Hearing Aid Consultation
- Cochlear Implant Evaluation
- Cochlear Implant Mapping
Pediatric Testing
- Newborn Hearing Screening
Tinnitus Management
- Tinnitus Sound Masking Setup
Tinnitus Treatment
- Tinnitus Therapy
Workplace Health
- Workplace OSHA Hearing Test
Procedures Most Often Billed to Medicare
195 services · 193 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Comprehensive hearing and speech recognition test | Treatment | 92557 |
82 | As often as other peers in Audiologist |
| Test for eardrum and muscle function | Treatment | 92550 |
80 | More often than most peers in Audiologist |
| Placement of ear probe for computerized measurement of repeated sounds with interpretation and report | Treatment | 92588 |
33 | As often as other peers in Audiologist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other audiologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other audiologists in Bel Air 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Comprehensive hearing and speech recognition test 7
Providers in MD who bill this service to Medicare most often.
Common questions
What is Katherine A. Duffy's specialty?
Katherine A. Duffy is an audiologist in Bel Air, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Katherine A. Duffy?
Katherine A. Duffy is listed at 5 Bel Air South Pkwy Ste N1411, Bel Air, MD 21015. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Katherine A. Duffy?
The number on file is (410) 569-3800. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Katherine A. Duffy's NPI number?
Katherine A. Duffy's National Provider Identifier is 1407376080. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Katherine A. Duffy's education?
Katherine A. Duffy attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Katherine A. Duffy been practicing?
Katherine A. Duffy has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What is Katherine A. Duffy known for?
According to Medicare billing data, Katherine A. Duffy provides treatments such as comprehensive hearing and speech recognition test and test for eardrum and muscle function. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Katherine A. Duffy confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Katherine A. Duffy. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.