Audiologist
24,926 active US providers register Audiologist as their primary taxonomy. That is 0.3% of every provider in the registry, and the 71st largest of 584 specialties with a page here.
- Taxonomy code
- 231H00000X
- Grouping
- Speech, Language and Hearing Service Providers
- Classification
- Audiologist
- Active providers
- 24,926
- States covered
- 51 of 51
What the code means
(1) A specialist in evaluation, habilitation and rehabilitation of those whose communication disorders center in whole or in part in hearing function. Audiologists are autonomous professionals who identify, assess, and manage disorders of the auditory, balance and other neural systems. Audiologists provide audiological (aural) rehabilitation to children and adults across the entire age span. Audiologists select, fit and dispense amplification systems such as hearing aids and related devices. (2) An audiologist is a person qualified by a master's degree in audiology, licensed by the state, where applicable, and practicing within the scope of that license. Audiologists evaluate and treat patients with impaired hearing. They plan, direct and conduct rehabilitative programs with audiotry substitutional devises (hearing aids) and other therapy.
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 | 1,739 | |
| New York | 1,706 | |
| Texas | 1,689 | |
| Florida | 1,611 | |
| Ohio | 1,089 | |
| Pennsylvania | 1,079 | |
| Illinois | 988 | |
| North Carolina | 896 | |
| Michigan | 829 | |
| Colorado | 786 | |
| Maryland | 698 | |
| Massachusetts | 692 | |
| Washington | 659 | |
| Tennessee | 623 | |
| Georgia | 599 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
21,618 of these are people and 3,308 are organisations, so 13% of the code is businesses rather than clinicians. Half of them had registered by 2011, and 4,852 registered in the last five years, 19% 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, NY297
- HOUSTON, TX231
- BOSTON, MA201
- CHICAGO, IL186
- PORTLAND, OR165
- SAN DIEGO, CA161
- SAINT LOUIS, MO161
- NASHVILLE, TN160
- SEATTLE, WA157
- LOS ANGELES, CA151
What else they list
Providers whose primary code is Audiologist 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-Hearing Aid Fitter | 2,878 | 11.5% |
| Hearing Instrument Specialist | 742 | 3.0% |
| Assistive Technology Practitioner Audiologist | 424 | 1.7% |
| Speech-Language Pathologist | 369 | 1.5% |
| Assistive Technology Supplier Audiologist | 328 | 1.3% |
| Hearing Aid Equipment | 213 | 0.9% |
| Hearing and Speech Clinic/Center | 127 | 0.5% |
| Student in an Organized Health Care Education/Training Program | 55 | 0.2% |
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.