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Audiologist-Hearing Aid Fitter: how many are there, and how many are in private practice?

The Audiologist-Hearing Aid Fitter classification covers professionals who evaluate and treat hearing loss, fit and dispense hearing aids, and provide balance testing and rehabilitation. It is used for individuals licensed as audiologist-hearing aid fitters rather than as audiologists in states with that distinction. This page shows the US NPI footprint for primary taxonomy 237600000X, including location, sole-proprietor reporting, and recent enumeration.

National totals

Active NPI records5,764
Registered sole proprietors624 (10.8%)
NUCC taxonomy code237600000X
GroupingSpeech, Language and Hearing Service Providers

What this specialty covers

An audiologist/hearing aid fitter is the professional who specializes in evaluating and treating people with hearing loss, conducts a wide variety of tests to determine the exact nature of an individual's hearing problem, presents a variety of treatment options to patients, dispenses and fits hearing aids, administers tests of balance to evaluate dizziness and provides hearing rehabilitation training. This classification should be used where individuals are licensed as "audiologist-hearing aid fitters" as opposed to states that license individuals as "audiologists".

Reading the sole-proprietor share

Among this specialty's records, the 10.8% sole-proprietor share means 624 active records have that NPPES flag. Because the field is self-reported, it is an imperfect proxy for private practice and does not by itself establish ownership, employment arrangement, or independence from an organization.

By state

StateActive NPIsSole proprietorsShare
California7069012.7%
Texas6086610.9%
New York3554913.8%
Florida2913110.7%
Pennsylvania2143918.2%
Michigan2012210.9%
Ohio1822915.9%
Washington182<11not reported
Arizona1782011.2%
Illinois1732011.6%
New Jersey1651710.3%
Minnesota160<11not reported
North Carolina1491610.7%
Louisiana1462215.1%
Colorado135<11not reported
Virginia128<11not reported
Maryland124<11not reported
Tennessee1141311.4%
Oregon110<11not reported
Alabama102<11not reported
Iowa971111.3%
Indiana941212.8%
Georgia901112.2%
Missouri80<11not reported
Utah76<11not reported
New Mexico72<11not reported
Wisconsin65<11not reported
Connecticut631219.0%
Massachusetts621117.7%
Kansas57<11not reported
Montana50<11not reported
Nevada48<11not reported
West Virginia44<11not reported
Nebraska42<11not reported
Idaho42<11not reported
South Carolina39<11not reported
Oklahoma37<11not reported
Kentucky35<11not reported
Arkansas32<11not reported
Maine27<11not reported
South Dakota25<11not reported
Delaware21<11not reported
Mississippi20<11not reported
New Hampshire19<11not reported
District of Columbia16<11not reported
Wyoming15<11not reported
Vermont15<11not reported
Rhode Island15<11not reported
Hawaii11<11not reported
North Dakota11<11not reported

New NPI registrations by year

Year first enumeratedNPIs
2016147
2017185
2018206
2019164
2020137
2021254
2022138
2023155
2024137
2025117

Counts reflect the year each NPI was first issued, among records still active today. The final year is partial: this data covers through 2026-01-11.

Data notes

Source: CMS National Plan and Provider Enumeration System (NPPES) Data Dissemination file, FOIA-disclosable public data under CMS-6060-N. Aggregated by Hero EMR on 2026-08-03; deactivated NPIs excluded; specialty assigned from the primary taxonomy code (NUCC 25.1). Counts below 11 are suppressed. Individual providers are never published. All provider data pages.

Common questions

How many audiologist-hearing aid fitters are there in the US?

There are 5,764 active NPI records with Audiologist-Hearing Aid Fitter as the primary taxonomy.

How many audiologist-hearing aid fitters are in private practice?

NPPES flags 624 records, or 10.8%, as sole proprietors. This is a self-reported classification and should be treated as an imperfect proxy for private practice.

Which states have the most audiologist-hearing aid fitters?

The largest state counts are California with 706, Texas with 608, New York with 355, Florida with 291, and Pennsylvania with 214.

How many audiologist-hearing aid fitter NPIs were recently enumerated?

Among the most recent full years available, 155 NPIs were first enumerated in 2023, 137 in 2024, and 117 in 2025.

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