Certified Respiratory Therapist
1,622 active US providers register Certified Respiratory Therapist as their primary taxonomy. That is 0.02% of every provider in the registry, and the 323rd largest of 584 specialties with a page here.
- Taxonomy code
- 227800000X
- Grouping
- Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- Classification
- Respiratory Therapist, Certified
- Active providers
- 1,622
- States covered
- 48 of 51
What the code means
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). CRTs provide diagnostic testing, therapeutics, monitoring, rehabilitation, and education to patients with disorders of the cardiopulmonary system. They provide these respiratory care services in all health care facilities and in the home. A CRT is a graduate of an associate degree program approved by the Commission on Accreditation of Allied Health Educational Programs (CAAHEP) and where applicable, is licensed by the state and is practicing within the scope of the license.
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 376 | |
| Florida | 195 | |
| North Carolina | 118 | |
| Texas | 92 | |
| Arizona | 80 | |
| Nevada | 67 | |
| Tennessee | 60 | |
| Georgia | 46 | |
| Illinois | 38 | |
| Washington | 37 | |
| New York | 33 | |
| Arkansas | 33 | |
| Alaska | 25 | |
| New Jersey | 25 | |
| Oklahoma | 22 |
Showing the 15 largest of 48 states with at least one.
Who registers under this code
1,543 of these are people and 79 are organisations, so 5% of the code is businesses rather than clinicians. Half of them had registered by 2014, and 278 registered in the last five years, 17% of the current population.
That is close to the pace of the registry as a whole.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- GREENVILLE, NC60
- LOS ANGELES, CA55
- LAS VEGAS, NV36
- MIAMI, FL26
- LIVINGSTON, TN25
- PHOENIX, AZ22
- IRVINE, CA20
- DOWNEY, CA19
- ATLANTA, GA19
- ANCHORAGE, AK19
What else they list
Providers whose primary code is Certified Respiratory Therapist most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Registered Respiratory Therapist | 18 | 1.1% |
| Home Health Certified Respiratory Therapist | 16 | 1.0% |
| General Care Certified Respiratory Therapist | 15 | 0.9% |
| Critical Care Certified Respiratory Therapist | 15 | 0.9% |
| Emergency Care Certified Respiratory Therapist | 13 | 0.8% |
| Educational Certified Respiratory Therapist | 12 | 0.7% |
| Geriatric Care Certified Respiratory Therapist | 12 | 0.7% |
| Pulmonary Rehabilitation Certified Respiratory Therapist | 11 | 0.7% |
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.