Hearing Instrument Specialist: NPI taxonomy code 237700000X
Taxonomy code 237700000X is Hearing Instrument Specialist, in the Speech, Language and Hearing Service Providers group.
12,825 active NPIs list it as their primary specialty (0.1% of all).
| Code | 237700000X |
|---|---|
| Group | Speech, Language and Hearing Service Providers |
| Classification | Hearing Instrument Specialist |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 12,825 (10,783 individuals, 2,042 organizations) |
What NUCC says: Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society (excerpt of the NUCC 26.1 definition)
Find Hearing Instrument Specialist providers
Search the registry for providers listing Hearing Instrument Specialist. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| Florida | 1,366 | 10.7% |
| California | 1,200 | 9.4% |
| Texas | 994 | 7.8% |
| Pennsylvania | 509 | 4.0% |
| Illinois | 475 | 3.7% |
| Michigan | 453 | 3.5% |
| Ohio | 428 | 3.3% |
| New York | 412 | 3.2% |
| Missouri | 407 | 3.2% |
| North Carolina | 387 | 3.0% |
Top states by practice location, from the NPPES file of September 13, 2026.
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.