Chiropractic Providers / 111NI0900X
Individual · specialization · Medicare specialty 35
111NI0900X Internist Chiropractor
111NI0900X is the taxonomy code for Internist, a specialization of Chiropractor, in the NUCC group “Chiropractic Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty 35, Chiropractic, under which 45,873 practitioners are enrolled.
- 1Taxonomy code 111NI0900X
- 2Level Specialization
- 3Medicare specialty 35 Chiropractic
- 4Codes in this group 12
Definition
The chiropractic internist may serve as a primary care physician or may see patients referred from other providers for evaluation and co-management. Evaluation is focused on the early detection of functional, nutritional, and pathological disorders. A chiropractic internist utilizes the diagnostic instruments necessary for proper examination. In cases where laboratory examination is necessary, a chiropractic internist utilizes a recognized reference laboratory facility. A chiropractic internist may manage his or her own cases or may refer to another specialist when prudent to do so. The chiropractic internist utilizes documented natural therapies, therapeutic lifestyle changes, patient education and other resources to promote patient health and avoidance of disease.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 111NI0900X sits
- Group: Chiropractic Providers — code 3 of 12 in the group
- Classification: Chiropractor 111N00000X
- Specialization: Internist 111NI0900X
Choose 111NI0900X over the general Chiropractor code (111N00000X) when the provider's training or certification is specifically in internist; the general code covers the classification as a whole. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 111NI0900X to Medicare specialty 35 (Chiropractic). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 45,873 practitioners are enrolled under it nationally, and 11 other taxonomy codes map to the same specialty.
Other codes under the same Medicare specialty: 111N00000X Chiropractor; 111NI0013X Independent Medical Examiner Chiropractor; 111NN0400X Neurology Chiropractor; 111NN1001X Nutrition Chiropractor; 111NP0017X Pediatric Chiropractor; 111NR0200X Radiology Chiropractor; 111NR0400X Rehabilitation Chiropractor; 111NS0005X Sports Physician Chiropractor; and 3 more.
Related codes
| Code | Chiropractor — other specializations |
|---|---|
| 111N00000X | Chiropractor |
| 111NI0013X | Independent Medical Examiner |
| 111NN0400X | Neurology |
| 111NN1001X | Nutrition |
| 111NX0100X | Occupational Health |
The nearest 5 of 11 other codes under Chiropractor; all are on the group page.
History of 111NI0900X
NUCC's earliest recorded change to 111NI0900X is from 2009 (definition added).
- 2009-07-01 — definition added
Find providers with 111NI0900X
Using 111NI0900X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.