Clinical Medical Laboratory - 291U00000X
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(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
| Field | Value |
|---|---|
| Code | 291U00000X |
| Grouping | Laboratories |
| Classification | Clinical Medical Laboratory |
| Specialization | — |
| Category | Non-Individual |
NPI Registrations
22.3K NPIs are registered under this taxonomy code nationwide.
The table below splits that total by NPI type — Type 1 covers individual practitioners, Type 2 covers organizations and facilities — followed by the five states with the most NPIs registered under this taxonomy code.
| Field | Value |
|---|---|
| Registered NPIs | 22.3K |
| Type 1 (Individual) | 849 |
| Type 2 (Organizational) | 21.5K |
Frequently Asked Questions
References
- 1.Health Care Provider Taxonomy Code Set. National Uniform Claim Committee (NUCC). Retrieved Aug 11, 2026.The official registry of provider taxonomy codes used to classify individual and organizational health care providers by specialty on standard transactions such as claims, NPI enrollment, and prior authorization requests.
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