Orthopedic Chiropractor
NUCC 111NX0800X · Chiropractor
894 CMS NPPES-registered providers across 51 states · 279th of 690 specialties by headcount.
Where this specialty sits in the corpus
Orthopedic Chiropractor ranks 279th of 690 NUCC specialties by CMS NPPES headcount (0.01% of all registered NPIs), densest in California; per resident Oregon leads.
- 894
- NPPES providers in specialty
- 279th
- of 690 specialties
- 550
- state-share HHI
- 1%
- Part D prescriber share
Oregon is densest per capita (2.8× the national rate; Montana 2.7×); 0.9% of the Chiropractor category.
Taxonomy fingerprint
Orthopedic Chiropractor (NUCC 111NX0800X; 1% Part D prescribers (9 of 894); avg 883 Part D claims/prescriber (181st of 572); Open Payments avg $130/physician (500th of 551; 14 paid, $2K total); state-share HHI 550; next-larger headcount neighbor Nuclear Medicine Physician (+16); next-smaller Psychiatric Pharmacist (-14)).
Next larger: Nuclear Medicine Physician (910) Next smaller: Psychiatric Pharmacist (880)
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
- Oregon 2.8× · 0.7/100k
- Montana 2.7× · 0.7/100k
- Connecticut 2.5× · 0.7/100k
- Hawaii 2.4× · 0.6/100k
- Utah 2× · 0.5/100k
Under-indexed vs national rate
- Maryland 0.31× · 0.1/100k
- Michigan 0.38× · 0.1/100k
- North Carolina 0.45× · 0.1/100k
- Tennessee 0.48× · 0.1/100k
- Georgia 0.48× · 0.1/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 150 |
| 2 | New York | 61 |
| 3 | Illinois | 54 |
| 4 | Texas | 43 |
| 5 | Florida | 42 |
| 6 | Pennsylvania | 39 |
| 7 | Washington | 33 |
| 8 | Ohio | 32 |
| 9 | Oregon | 31 |
| 10 | Colorado | 30 |
| 11 | Massachusetts | 30 |
| 12 | Minnesota | 30 |
| 13 | Connecticut | 24 |
| 14 | New Jersey | 21 |
| 15 | Arizona | 19 |
Top Cities for Orthopedic Chiropractor
| # | City | Providers |
|---|---|---|
| 1 | PortlandOregon | 9 |
| 2 | San DiegoCalifornia | 8 |
| 3 | Las VegasNevada | 8 |
| 4 | Los AngelesCalifornia | 7 |
| 5 | ChicagoIllinois | 6 |
| 6 | AlbuquerqueNew Mexico | 6 |
| 7 | New YorkNew York | 6 |
| 8 | TucsonArizona | 5 |
| 9 | GlendaleCalifornia | 5 |
| 10 | San FranciscoCalifornia | 5 |
| 11 | DenverColorado | 5 |
| 12 | RochesterNew York | 5 |
Sample Orthopedic Chiropractor NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | David Arpin, D.C.Arden, NC |
| 2 | Joseph Ferstl, DC DABCOElgin, IL |
| 3 | Leon Wleklinski, D.C.Park Ridge, IL |
| 4 | William Doggett, DCAlbuquerque, NM |
| 5 | Robert Bachelder, D.C.,FACOAshland, OH |
| 6 | Mark Winteregg, D.C.Fort Wayne, IN |
| 7 | Jewa Lea, DCBurtonsville, MD |
| 8 | Ronald Shepherd, D.C.Le Claire, IA |
| 9 | Bradley Mandell, D.C.Little River, SC |
| 10 | James Faine, D.C.Storm Lake, IA |
| 11 | Andrew Gorby, DCGlendale, AZ |
| 12 | Keith Kamrath, D.C.Hutchinson, MN |
| 13 | Martin Von IderstineRobbinsdale, MN |
| 14 | Jane McBride, D.C.Havertown, PA |
| 15 | Caroline Mohlstrom, D.C.Hinsdale, IL |
| 16 | Phillip Piscopo, DCCrete, IL |
| 17 | Peggy Bolks, DCSpring, TX |
| 18 | John Johnsrud, D.C.Citrus Heights, CA |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Chiropractor category.
Frequently Asked Questions
How should I read Orthopedic Chiropractor's mid-pack national roster?
How does Orthopedic Chiropractor show up in Open Payments mid-pack?
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 2026-08-27.