Audiologist
NUCC 231H00000X
20,918 CMS NPPES-registered providers across 56 states · 56th of 690 specialties by headcount.
Where this specialty sits in the corpus
Audiologist ranks 56th of 690 NUCC specialties by CMS NPPES headcount (0.29% of all registered NPIs), densest in California; per resident District of Columbia leads.
- 20,918
- NPPES providers in specialty
- 56th
- of 690 specialties
- 365
- state-share HHI
- 0%
- Part D prescriber share
District of Columbia is densest per capita (2.7× the national rate; Colorado 1.7×).
Taxonomy fingerprint
Audiologist (NUCC 231H00000X; 0% Part D prescribers (5 of 20,918); avg 355 Part D claims/prescriber (345th of 572); Open Payments avg $642/physician (329th of 551; 3 paid, $2K total); state-share HHI 365; next-larger headcount neighbor Pediatric Nurse Practitioner (+562); next-smaller Neurology Physician (-451)).
Next larger: Pediatric Nurse Practitioner (21,480) Next smaller: Neurology Physician (20,467)
Population-adjusted state index
Each multiple is this specialty's providers-per-resident in a state divided by the national rate (Census Vintage population estimates). Raw headcount favors large states; this ranking surfaces denser markets.
Over-indexed vs national rate
- District of Columbia 2.7× · 16.9/100k
- Colorado 1.7× · 10.7/100k
- Vermont 1.4× · 9/100k
- Massachusetts 1.4× · 8.7/100k
Under-indexed vs national rate
- Guam 0.53× · 3.3/100k
- Nevada 0.62× · 3.9/100k
- Puerto Rico 0.63× · 3.9/100k
- California 0.63× · 3.9/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 1,521 |
| 2 | New York | 1,506 |
| 3 | Florida | 1,368 |
| 4 | Texas | 1,361 |
| 5 | Ohio | 957 |
| 6 | Pennsylvania | 922 |
| 7 | Illinois | 847 |
| 8 | North Carolina | 758 |
| 9 | Michigan | 691 |
| 10 | Colorado | 626 |
| 11 | Massachusetts | 608 |
| 12 | Washington | 532 |
| 13 | Tennessee | 528 |
| 14 | Maryland | 503 |
| 15 | Georgia | 494 |
Top Cities for Audiologist
| # | City | Providers |
|---|---|---|
| 1 | New YorkNew York | 269 |
| 2 | BostonMassachusetts | 194 |
| 3 | HoustonTexas | 187 |
| 4 | ChicagoIllinois | 174 |
| 5 | Saint LouisMissouri | 157 |
| 6 | San DiegoCalifornia | 154 |
| 7 | PortlandOregon | 151 |
| 8 | NashvilleTennessee | 143 |
| 9 | SeattleWashington | 143 |
| 10 | PittsburghPennsylvania | 137 |
| 11 | DallasTexas | 134 |
| 12 | Los AngelesCalifornia | 132 |
Sample Audiologist NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Susan Wortsman, MA-CCCNew York, NY |
| 2 | Melody Martin, PH.D., AU.D., CCC-SPWaco, TX |
| 3 | Stacia Moore, AU.D.Kalispell, MT |
| 4 | Melissa Sirois, AUDZephyrhills, FL |
| 5 | Susan Dillmuth-Miller, M.A., FAAACoplay, PA |
| 6 | Kathleen Haasch, MS CCC-A FAAASheboygan, WI |
| 7 | Jane Porter, AUDIrving, TX |
| 8 | Mark Conradt, AU.D.Neenah, WI |
| 9 | Michelle Stone, AUDStockbridge, GA |
| 10 | Suanne Kendrick, AU.D., CCC-A/SLPHammond, LA |
| 11 | T Watson, MA CCCACovington, LA |
| 12 | Karen Ditty, AUD CCC-AHouston, TX |
| 13 | Donald Vogel, AU.D.New York, NY |
| 14 | Elizabeth Hoehl, AU.D.Vienna, VA |
| 15 | Susan Hollar, AU.DKingston, NY |
| 16 | Janeane Murphy, MA, CCC-ACrawfordsville, IN |
| 17 | Michael Metz, PH.D.Irvine, CA |
| 18 | Carol Clifford, AUDAlbuquerque, NM |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy.
Compare Audiologist vs Assistive Technology Practitioner Audiologist →
Frequently Asked Questions
Where does the large Audiologist headcount concentrate?
How large is Audiologist's Open Payments footprint?
How heavy is Audiologist Part D prescribing at scale?
Data sources and methodology
Provider data from CMS NPPES (download.cms.gov/nppes). Specialty classification from NUCC Health Care Provider Taxonomy (nucc.org). Part D averages from the CMS Medicare Part D Prescriber PUF; industry payments from CMS Open Payments 2024. Counts reflect self-designated primary taxonomy at NPI enrollment. PlainDoctor does not rate or rank providers. Methodology · About
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-27.