Specialist
NUCC 174400000X
69,608 CMS NPPES-registered providers across 55 states · 28th of 690 specialties by headcount.
Where this specialty sits in the corpus
Specialist ranks 28th of 690 NUCC specialties by CMS NPPES headcount (0.98% of all registered NPIs), densest in New York; per resident New York leads.
- 69,608
- NPPES providers in specialty
- 28th
- of 690 specialties
- 1291
- state-share HHI
- 19.2%
- Part D prescriber share
New York is densest per capita (5.7× the national rate; New Hampshire 3.7×).
Taxonomy fingerprint
Specialist (NUCC 174400000X; 19.2% Part D prescribers (13,377 of 69,608); avg 1,474 Part D claims/prescriber (65th of 567); Open Payments avg $5K/physician (98th of 552; 9,703 paid, $47.7M total); state-share HHI 1,291; next-larger headcount neighbor Licensed Practical Nurse (+2,064); next-smaller Massage Therapist (-713)).
Next larger: Licensed Practical Nurse (71,672) Next smaller: Massage Therapist (68,895)
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
- New York 5.7× · 116.6/100k
- New Hampshire 3.7× · 75.3/100k
- Washington 1.8× · 36.7/100k
- North Dakota 1.5× · 30.6/100k
Under-indexed vs national rate
- Iowa 0.24× · 5/100k
- Wisconsin 0.28× · 5.7/100k
- South Dakota 0.29× · 6/100k
- Guam 0.35× · 7.2/100k
- Indiana 0.38× · 7.9/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | New York | 22,821 |
| 2 | California | 6,672 |
| 3 | Florida | 3,485 |
| 4 | Washington | 2,868 |
| 5 | Pennsylvania | 2,470 |
| 6 | Texas | 2,421 |
| 7 | New Jersey | 1,996 |
| 8 | Ohio | 1,568 |
| 9 | Illinois | 1,443 |
| 10 | Colorado | 1,286 |
| 11 | Massachusetts | 1,274 |
| 12 | Oregon | 1,202 |
| 13 | Georgia | 1,177 |
| 14 | Maryland | 1,138 |
| 15 | North Carolina | 1,131 |
Top Cities for Specialist
| # | City | Providers |
|---|---|---|
| 1 | BrooklynNew York | 5,664 |
| 2 | New YorkNew York | 2,056 |
| 3 | PittsburghPennsylvania | 882 |
| 4 | BronxNew York | 836 |
| 5 | Staten IslandNew York | 761 |
| 6 | San FranciscoCalifornia | 710 |
| 7 | ManchesterNew Hampshire | 520 |
| 8 | PortlandOregon | 433 |
| 9 | Los AngelesCalifornia | 403 |
| 10 | SeattleWashington | 376 |
| 11 | Forest HillsNew York | 375 |
| 12 | HoustonTexas | 374 |
Sample Specialist NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Laurent Gressot, M.D.Houston, TX |
| 2 | Alan Markman, M.D.Minneapolis, MN |
| 3 | Nena Sy, M.D.Passaic, NJ |
| 4 | Newton Peters, M.D.Portsmouth, NH |
| 5 | Andrew Spinak, M.D.Pearl River, NY |
| 6 | Lin-Lin Liu, MDCypress, TX |
| 7 | Izik Yitzhaki, M.D.Totowa, NJ |
| 8 | Alex Sneiders, M.D.Faribault, MN |
| 9 | Robert Ferris, M.D.Jefferson City, MO |
| 10 | Clifford Sales, MDWestfield, NJ |
| 11 | Brian Stephens, M.D.Owasso, OK |
| 12 | Charles Yen, M.D.Houston, TX |
| 13 | William Fleet, M.D.Franklin, TN |
| 14 | Michael Storey, MDHouston, TX |
| 15 | Glen Garner, MDHouston, TX |
| 16 | Noel Jansen, M.D.Indianapolis, IN |
| 17 | Mitchell Lowenstein, M.D.Palm Harbor, FL |
| 18 | Stacy Davis, M.D.Nashville, TN |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy.
Frequently Asked Questions
How many Specialist providers are in the US?
Do Specialist clinicians appear in Open Payments?
How much Part D prescribing does this specialty do?
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 2026-05-20.