Allopathic & Osteopathic Physicians / 2083T0002X
Individual · specialization · Medicare specialty 84
2083T0002X Medical Toxicology (Preventive Medicine) Physician
2083T0002X is the taxonomy code for Medical Toxicology, a specialization of Preventive Medicine, in the NUCC group “Allopathic & Osteopathic Physicians”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty 84, Physician/Preventive Medicine, under which 1,039 practitioners are enrolled.
- 1Taxonomy code 2083T0002X
- 2Level Specialization
- 3Medicare specialty 84 Physician/Preventive Medicine
- 4Codes in this group 238
Definition
Medical toxicologists are physicians who specialize in the prevention, evaluation, treatment and monitoring of injury and illness from exposures to drugs and chemicals, as well as biological and radiological agents. Medical toxicologists care for people in clinical, academic, governmental and public health settings, and provide poison control center leadership. Important areas of medical toxicology include acute drug poisoning, adverse drug events, drug abuse, addiction and withdrawal, chemicals and hazardous materials, terrorism preparedness, venomous bites and stings, and environmental and workplace exposures.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 2083T0002X sits
- Group: Allopathic & Osteopathic Physicians — code 182 of 238 in the group
- Classification: Preventive Medicine
- Specialization: Medical Toxicology 2083T0002X
Choose 2083T0002X over the general Preventive Medicine code when the provider's training or certification is specifically in medical toxicology; 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 2083T0002X to Medicare specialty 84 (Physician/Preventive Medicine). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 1,039 practitioners are enrolled under it nationally, and 9 other taxonomy codes map to the same specialty.
Other codes under the same Medicare specialty: 2083A0100X Aerospace Medicine Physician; 2083A0300X Addiction Medicine (Preventive Medicine) Physician; 2083B0002X Obesity Medicine (Preventive Medicine) Physician; 2083C0008X Clinical Informatics Physician; 2083P0011X Undersea and Hyperbaric Medicine (Preventive Medicine) Physician; 2083P0500X Preventive Medicine/Occupational Environmental Medicine Physician; 2083P0901X Public Health & General Preventive Medicine Physician; 2083S0010X Sports Medicine (Preventive Medicine) Physician; and 1 more.
Related codes
| Code | Preventive Medicine — other specializations |
|---|---|
| 2083A0300X | Addiction Medicine |
| 2083A0100X | Aerospace Medicine |
| 2083C0008X | Clinical Informatics |
| 2083B0002X | Obesity Medicine |
| 2083X0100X | Occupational Medicine |
| 2083P0500X | Preventive Medicine/Occupational Environmental Medicine |
The nearest 6 of 9 other codes under Preventive Medicine; all are on the group page.
History of 2083T0002X
NUCC's earliest recorded change to 2083T0002X is from 2007 (definition added, source added).
- 2007-07-01 — definition added, source added
Similar codes in other groups
If 2083T0002X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 103TP0016X Prescribing (Medical) Psychologist (Behavioral Health & Social Service Providers)
- 111NI0013X Independent Medical Examiner Chiropractor (Chiropractic Providers)
- 146N00000X Basic Emergency Medical Technician (Emergency Medical Service Providers)
- 146M00000X Intermediate Emergency Medical Technician (Emergency Medical Service Providers)
- 146L00000X Paramedic (Emergency Medical Service Providers)
- 163WM0705X Medical-Surgical Registered Nurse (Nursing Service Providers)
Find providers with 2083T0002X
Using 2083T0002X
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.