Chiropractor (NUCC 111N00000X). "Chiropractic" returns zero results; "Chiropractic Physician" returns zero results. Chiropractors are DCs, not MDs — a distinct professional class with independent purchasing authority and a largely cash-pay or DME patient base.
taxonomy_description=Chiropractic → 0 resultstaxonomy_description=Chiropractic+Physician → 0 resultstaxonomy_description=Chiropractor%2C+Sports (sub-code as standalone) → 0 resultstaxonomy_description=Chiropractor → 123 Memphis, 200+ Nashville, 200+ Vermont statewideChiropractor query and are visible in the taxonomies[] field.
Chiropractic uses the practitioner-class string in the NPI registry — "Chiropractor" — rather than the field name "Chiropractic." This is the reverse pattern from most other specialties (where you use "Podiatrist" not "Podiatry," "Dentist" not "Dentistry"). Among non-MD professions, the practitioner noun tends to be the correct NUCC string.
| Market | NPI records returned | Notes |
|---|---|---|
| New York, NY | 200+ | Capped — actual total substantially exceeds 200 |
| Los Angeles, CA | 200+ | Capped |
| Chicago, IL | 200+ | Capped |
| Houston, TX | 200+ | Capped |
| Phoenix, AZ | 200+ | Capped |
| Nashville, TN | 200+ | Capped |
| Memphis, TN | 123 | 68 NPI-1 (DC), 55 NPI-2 (chiropractic clinics) |
| Wyoming (statewide) | 200+ | Capped — high DC density even in rural states |
| Vermont (statewide) | 200+ | Capped statewide |
Source: CMS NPI Registry API v2.1, queried June 13, 2026. "200+" = cap reached. Download: npi-counts-chiropractic.json
Chiropractic is among the most dense non-physician healthcare professions in the NPI registry. Every market except Memphis city hit the 200-record cap. The Bureau of Labor Statistics estimates approximately 50,000 licensed chiropractors in the U.S., making chiropractic one of the most common healthcare professions nationally.
| NUCC code | Taxonomy string | Queryable standalone? | Vermont count (in base query) |
|---|---|---|---|
| 111N00000X | Chiropractor |
Yes — the base string | 200+ (in base query) |
| 111NR0400X | Chiropractor, Rehabilitation |
No — returns 0 as standalone | Appears in base query results |
| 111NN0400X | Chiropractor, Neurology |
No — returns 0 as standalone | Appears in base query results |
| 111NS0005X | Chiropractor, Sports Physician |
No — returns 0 as standalone | Appears in base query results |
| 111NN1001X | Chiropractor, Nutrition |
No — returns 0 as standalone | Appears in base query results |
| 111NX0800X | Chiropractor, Orthopedic |
No — returns 0 as standalone | Appears in base query results |
| 111NT0100X | Chiropractor, Thermography |
No — returns 0 as standalone | Appears in base query results |
The practical implication: one query string (Chiropractor) returns your complete chiropractic call list. The specialization sub-codes are informational — visible in raw data — but cannot be isolated via separate queries. Filter post-export on the taxonomies[].desc field if you need to segment by specialization.
Query with taxonomy_description=Chiropractor. This captures the base code (111N00000X) and all chiropractors, including those with specialization sub-codes as their primary taxonomy.
Use city + state for city-level queries. Because chiropractors practice in offices rather than hospitals, city-name filtering is reliable — they typically bill from their own clinic address.
https://npiregistry.cms.hhs.gov/api/?version=2.1
&taxonomy_description=Chiropractor
&city=Memphis&state=TN
&limit=200The 45% NPI-2 share in Memphis is significant. NPI-2 records are chiropractic practices and clinics — the purchasing entity for equipment decisions. NPI-1 records are individual DCs — the practitioners. For a DME or therapeutic-device rep, NPI-2 records give you the clinic name and address; NPI-1 records give you the individual DC's contact information.
Chiropractic is densely distributed in most markets. In major metros, a 10-mile radius returns more chiropractors than most reps can cover. For rural territories where every market capped at 200+ statewide, use a statewide query and plan routes from the result set.
The getdork physician search tool exports a CRM-ready CSV with the DC credential clearly visible, allowing you to filter to NPI-1 DCs only when needed. The practice address in NPI data maps to the clinic location for route planning.
| Market type | Suggested radius | Notes |
|---|---|---|
| Dense urban (NYC, Chicago, LA) | 3–10 miles | Caps immediately; dense distribution in most neighborhoods |
| Mid-size metro (Memphis, Nashville) | 10–20 miles | Memphis: 123 city records; 20-mile radius covers suburbs |
| Rural state (Wyoming, rural VT) | Statewide query or 75+ miles | Both states capped statewide; route from full-state export |
The getdork physician search sends the correct Chiropractor string automatically and returns results with DC credential, entity type, and practice address. Pro users export to CRM-ready CSV.
The NPI registry uses NUCC taxonomy description strings. For chiropractic, the NUCC descriptor is the practitioner class — "Chiropractor" (111N00000X) — not the field name "Chiropractic." Both "Chiropractic" and "Chiropractic Physician" return zero results, confirmed live June 13, 2026. This is the same pattern seen with "Podiatrist" (not "Podiatry") and "Dentist" (not "Dentistry") in the non-MD professions taxonomy.
Doctor of Chiropractic (DC) is a distinct professional degree — not MD or DO. Chiropractors diagnose and treat musculoskeletal conditions but do not prescribe medications or perform surgery. For a device or product rep, this creates a distinct call profile: independent purchasing authority for DME and therapeutic equipment, without hospital or pharmacy formulary involvement. In Memphis (June 2026), virtually all NPI-1 records carried D.C. or DC credentials.
Yes — the specialization sub-codes appear in records returned by the base Chiropractor query, visible in the taxonomies[] field. But querying sub-code strings directly as standalone queries returns zero results. The Vermont raw data confirmed all sub-codes present: Neurology (111NN0400X), Nutrition (111NN1001X), Rehabilitation (111NR0400X), Sports Physician (111NS0005X), Thermography (111NT0100X), Orthopedic (111NX0800X). Filter post-export on the taxonomy desc field to segment by specialization.
In Memphis (123 total records, June 2026), 55 were NPI-2 organization entities — a 45% share that is notably high. Chiropractic practices frequently organize as group practices or professional corporations, particularly when co-located with physical therapy or acupuncture services. For DME or therapeutic-device reps, NPI-2 records identify the clinic-level purchasing entity. NPI-1 records identify the individual DC.
Yes — chiropractic is one of the densest non-MD professions in the NPI registry. Vermont statewide hit the 200-record API cap, meaning the actual total exceeds 200. National chiropractic population is estimated at ~50,000 licensed practitioners, making it one of the most common healthcare professions in the NPI database. Every market in our June 2026 run hit the cap except Memphis city (123).
Chiropractors are purchasers of therapeutic ultrasound units, electrical stimulation devices (TENS/EMS), cold laser therapy equipment, spinal decompression systems, and orthotics/bracing products. Many operate cash-pay practices that retail ergonomic supports, nutritional supplements, and therapeutic cushions. Unlike MD offices where GPO contracting governs purchasing, chiropractors make independent equipment decisions — accessible targets for direct DME and therapeutic-device sales without hospital-system access requirements.
taxonomy_description=Chiropractor with the geographic parameters shown. All figures are live API responses. "200+" means the 200-record cap was hit. The sub-code standalone 0-return was confirmed by querying taxonomy_description=Chiropractic, taxonomy_description=Chiropractic+Physician, and taxonomy_description=Chiropractor%2C+Sports each returning zero results. Raw JSON available above.