Certified Respiratory Therapist: NPI taxonomy code 227800000X
Taxonomy code 227800000X is Respiratory Therapist, Certified, in the Respiratory, Developmental, Rehabilitative and Restorative Service Providers group.
1,619 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 227800000X |
|---|---|
| Group | Respiratory, Developmental, Rehabilitative and Restorative Service Providers |
| Classification | Respiratory Therapist, Certified |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 1,619 (1,540 individuals, 79 organizations) |
What NUCC says: A Certified Respiratory Therapist (CRT) is a an entry level therapist who has passed a standardized written examination administered by the National Board for Respiratory Care (NBRC). (excerpt of the NUCC 26.1 definition)
Find Certified Respiratory Therapist providers
Search the registry for providers listing Respiratory Therapist, Certified. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 376 | 23.2% |
| Florida | 195 | 12.0% |
| North Carolina | 118 | 7.3% |
| Texas | 92 | 5.7% |
| Arizona | 80 | 4.9% |
| Nevada | 66 | 4.1% |
| Tennessee | 60 | 3.7% |
| Georgia | 46 | 2.8% |
| Washington | 37 | 2.3% |
| Illinois | 36 | 2.2% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- General Care Certified Respiratory Therapist 193
- Critical Care Certified Respiratory Therapist 184
- Home Health Certified Respiratory Therapist 163
- Pulmonary Rehabilitation Certified Respiratory Therapist 101
- Neonatal/Pediatric Certified Respiratory Therapist 59
- Pulmonary Diagnostics Certified Respiratory Therapist 51
- Pulmonary Function Technologist Certified Respiratory Therapist 50
- Educational Certified Respiratory Therapist 39
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.