NPI Portal NPI Lookup & Verification

NUCC taxonomy code

227800000X - Certified Respiratory Therapist

227800000X is the NUCC provider taxonomy code for Certified Respiratory Therapist (individual providers). 1,622 providers in our latest NPPES snapshot list it as their primary taxonomy.

1,622 providers · primary taxonomy

Code breakdown

Taxonomy code 227800000X
Display name Certified Respiratory Therapist
Grouping Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Classification Respiratory Therapist, Certified
Section Individual
Directory Respiratory Therapist, Certified provider directory

Definition

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 from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

2278C0205X Critical Care Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278E1000X Educational Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278E0002X Emergency Care Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278G1100X General Care Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278G0305X Geriatric Care Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278H0200X Home Health Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278P3900X Neonatal/Pediatric Certified Respiratory Therapist (Respiratory Therapist, Certified) 2278P3800X Palliative/Hospice Certified Respiratory Therapist (Respiratory Therapist, Certified)

Frequently asked questions

What does taxonomy code 227800000X mean?
227800000X is the NUCC Health Care Provider Taxonomy code for Certified Respiratory Therapist in the "Respiratory, Developmental, Rehabilitative and Restorative Service Providers" grouping. It classifies individual providers.
Where is the taxonomy code used?
Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.
How do I find providers with taxonomy 227800000X?
Browse the Respiratory Therapist, Certified directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-13.