Audiologist-Hearing Aid Fitter
4,900 active US providers register Audiologist-Hearing Aid Fitter as their primary taxonomy. That is 0.05% of every provider in the registry, and the 189th largest of 584 specialties with a page here.
- Taxonomy code
- 237600000X
- Grouping
- Speech, Language and Hearing Service Providers
- Classification
- Audiologist-Hearing Aid Fitter
- Active providers
- 4,900
- States covered
- 51 of 51
What the code means
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".
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 711 | |
| Texas | 457 | |
| New York | 306 | |
| Florida | 240 | |
| Pennsylvania | 204 | |
| Michigan | 198 | |
| Ohio | 166 | |
| Arizona | 152 | |
| Washington | 144 | |
| Illinois | 136 | |
| New Jersey | 132 | |
| Minnesota | 132 | |
| Louisiana | 123 | |
| North Carolina | 115 | |
| Colorado | 113 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
2,784 of these are people and 2,116 are organisations, so 43% of the code is businesses rather than clinicians. Half of them had registered by 2009, and 669 registered in the last five years, 14% of the current population.
That is close to the pace of the registry as a whole.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- NEW YORK, NY42
- LOS ANGELES, CA37
- HOUSTON, TX36
- SAN FRANCISCO, CA35
- SAN ANTONIO, TX33
- DALLAS, TX33
- TUCSON, AZ31
- SAN DIEGO, CA30
- ALBUQUERQUE, NM28
- BROOKLYN, NY24
What else they list
Providers whose primary code is Audiologist-Hearing Aid Fitter most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Audiologist | 802 | 16.4% |
| Hearing Instrument Specialist | 294 | 6.0% |
| Assistive Technology Practitioner Audiologist | 108 | 2.2% |
| Assistive Technology Supplier Audiologist | 86 | 1.8% |
| Hearing Aid Equipment | 64 | 1.3% |
| Speech-Language Pathologist | 35 | 0.7% |
| Hearing and Speech Clinic/Center | 27 | 0.6% |
| Audiology Assistant | 7 | 0.1% |
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.