Hearing Instrument Specialist providers in the U.S.
10,721 NPPES records list hearing instrument specialist as their primary taxonomy, about 3.2 per 100,000 residents; Iowa and Wisconsin have the most per resident. 1 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 237700000X means
237700000X is the National Uniform Claim Committee code for Hearing Instrument Specialist, in the grouping Speech, Language and Hearing Service Providers. 10,721 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
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
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 237700000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
San Antonio has the most, 56
Source: CMS NPPES, primary taxonomy 237700000X by practice city, file of Aug 9, 2026.
All 51 by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 150 | 2.9 |
| Alaska | 30 | 4.1 |
| Arizona | 270 | 3.6 |
| Arkansas | 79 | 2.6 |
| California | 994 | 2.6 |
| Colorado | 184 | 3.1 |
| Connecticut | 108 | 3.0 |
| Delaware | 33 | 3.2 |
| District of Columbia | 1 | 0.1 |
| Florida | 1,129 | 5.0 |
| Georgia | 264 | 2.4 |
| Hawaii | 31 | 2.2 |
| Idaho | 79 | 4.0 |
| Illinois | 408 | 3.3 |
| Indiana | 278 | 4.1 |
| Iowa | 197 | 6.1 |
| Kansas | 128 | 4.4 |
| Kentucky | 172 | 3.8 |
| Louisiana | 112 | 2.4 |
| Maine | 65 | 4.7 |
| Maryland | 85 | 1.4 |
| Massachusetts | 210 | 3.0 |
| Michigan | 359 | 3.6 |
| Minnesota | 281 | 4.9 |
| Mississippi | 63 | 2.1 |
| Missouri | 315 | 5.1 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 53 | 4.7 |
| Nebraska | 68 | 3.4 |
| Nevada | 56 | 1.8 |
| New Hampshire | 70 | 5.0 |
| New Jersey | 217 | 2.3 |
| New Mexico | 79 | 3.7 |
| New York | 330 | 1.7 |
| North Carolina | 324 | 3.0 |
| North Dakota | 31 | 4.0 |
| Ohio | 370 | 3.1 |
| Oklahoma | 135 | 3.3 |
| Oregon | 194 | 4.6 |
| Pennsylvania | 447 | 3.4 |
| Rhode Island | 30 | 2.7 |
| South Carolina | 181 | 3.4 |
| South Dakota | 41 | 4.5 |
| Tennessee | 173 | 2.4 |
| Texas | 828 | 2.7 |
| Utah | 84 | 2.5 |
| Vermont | 31 | 4.8 |
| Virginia | 254 | 2.9 |
| Washington | 282 | 3.6 |
| West Virginia | 59 | 3.3 |
| Wisconsin | 329 | 5.6 |
| Wyoming | 27 | 4.6 |
In federal data
- NUCC code237700000X
- Size rank92nd of 688 specialties by records (0.15% of all)
- Part D prescribers1 (under 0.1% of records)
- Part D claims15 a year per prescriber, on average (485th of 496)
- Industry payments1 physicians paid $613 in 2024, $613 each on average
- Concentration10 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of hearing instrument specialist records
- Daniel KalishImagination Land, AK1336497809
- Eva LongAnchorage, AK1184165896
- Donna Demarco, AAS-HIS-CEOAnchorage, AK1619189776
- Barry White, HSAnchorage, AK1962603803
- George BoyleAnchorage, AK1235487513
- Robert SmithAnchorage, AK1669868196
- Alisa O'KellyAnchorage, AK1124403019
- Tim Morehouse, HISAnchorage, AK1326419805
- Tyler Schlereth, H.I.SAnchorage, AK1477021566
- Mica Nelson, HISAnchorage, AK1780289421
- Ashley Roehl, HIS HADAnchorage, AK1952020935
- Kara KingAnchorage, AK1821924382
- David CalvertAnchorage, AK1275747420
- Elizabeth McCarty, HEARING AID DEALERAnchorage, AK1841617362
- Anna Alcorn, HEARING AID DEALERAnchorage, AK1427454180
- Kristen SchwarzAnchorage, AK1003318718
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Hearing Instrument Specialist headcount concentrate?
10,721 Hearing Instrument Specialist NPIs span 53 states; Florida alone holds 1,129. Top metros include San Antonio, TX; Tucson, AZ; Houston, TX; Springfield, MO. Nationally this is 92nd of 688 NUCC codes.
How large is Hearing Instrument Specialist's Open Payments footprint?
CMS Open Payments 2024 lists 1 Hearing Instrument Specialist physicians totaling $613 (4 payments; average $613, 270th of 470). Presence in Open Payments is not a quality judgment.
How heavy is Hearing Instrument Specialist Part D prescribing at scale?
Among Hearing Instrument Specialist NPIs, 1 appear in the Medicare Part D Prescriber PUF (average 15 claims and $240 drug cost per prescriber; 485th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.