Certified Respiratory Therapist providers in the U.S.
1,539 NPPES records list certified respiratory therapist as their primary taxonomy, about 0.5 per 100,000 residents; Alaska and Nevada have the most per resident. A registry record is not proof of an active practice.
What taxonomy code 227800000X means
227800000X is the National Uniform Claim Committee code for Respiratory Therapist, Certified, in the grouping Respiratory, Developmental, Rehabilitative and Restorative Service Providers. 1,539 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
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.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 227800000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Greenville has the most, 59
Source: CMS NPPES, primary taxonomy 227800000X by practice city, file of Aug 9, 2026.
All 48 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 11 | 0.2 |
| Alaska | 25 | 3.4 |
| Arizona | 80 | 1.1 |
| Arkansas | 30 | 1.0 |
| California | 368 | 0.9 |
| Colorado | 14 | 0.2 |
| Connecticut | 4 | 0.1 |
| District of Columbia | 1 | 0.1 |
| Florida | 187 | 0.8 |
| Georgia | 46 | 0.4 |
| Idaho | 9 | 0.5 |
| Illinois | 36 | 0.3 |
| Indiana | 15 | 0.2 |
| Iowa | 6 | 0.2 |
| Kansas | 14 | 0.5 |
| Kentucky | 8 | 0.2 |
| Louisiana | 14 | 0.3 |
| Maine | 5 | 0.4 |
| Maryland | 17 | 0.3 |
| Massachusetts | 6 | 0.1 |
| Michigan | 17 | 0.2 |
| Minnesota | 15 | 0.3 |
| Mississippi | 15 | 0.5 |
| Missouri | 14 | 0.2 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 7 | 0.6 |
| Nebraska | 4 | 0.2 |
| Nevada | 63 | 2.0 |
| New Hampshire | 4 | 0.3 |
| New Jersey | 26 | 0.3 |
| New Mexico | 7 | 0.3 |
| New York | 29 | 0.1 |
| North Carolina | 111 | 1.0 |
| North Dakota | 2 | 0.3 |
| Ohio | 15 | 0.1 |
| Oklahoma | 21 | 0.5 |
| Oregon | 7 | 0.2 |
| Pennsylvania | 19 | 0.1 |
| Rhode Island | 8 | 0.7 |
| South Carolina | 20 | 0.4 |
| South Dakota | 5 | 0.5 |
| Tennessee | 56 | 0.8 |
| Texas | 81 | 0.3 |
| Utah | 5 | 0.1 |
| Virginia | 22 | 0.3 |
| Washington | 28 | 0.4 |
| West Virginia | 1 | 0.1 |
| Wisconsin | 16 | 0.3 |
| Wyoming | 5 | 0.9 |
In federal data
- NUCC code227800000X · Respiratory Therapist, Certified
- Size rank228th of 688 specialties by records (0.02% of all)
- In its family1st of 14 Respiratory Therapist, Certified codes, 65.5% of the family
- Concentration5 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of certified respiratory therapist records
- Raymond Carloni, RTAnchorage, AK1821271321
- Rebecca Arthen, RTAnchorage, AK1033392527
- Terri Farnum, RTAnchorage, AK1003099599
- Harry Caldwell, RTAnchorage, AK1275716771
- Edward Deforest, RTAnchorage, AK1619150117
- David Arthen, RTAnchorage, AK1952584443
- Linda Woods, RTAnchorage, AK1720261225
- Wendelynn Nash, RTAnchorage, AK1447433941
- Kelly Crumpler, RTAnchorage, AK1750564241
- Gregory Rodgers, RTAnchorage, AK1871776369
- Susan Eychaner, RTAnchorage, AK1700064946
- Cheryl Rafuse, RTAnchorage, AK1407034648
- Betty Nemec, CRTTAnchorage, AK1649445891
- Melinda Like, CRTAnchorage, AK1326426461
- Norma Jean Brown, CRTAnchorage, AK1396879995
- Julianne Jones, CRTAnchorage, AK1013039452
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Certified Respiratory Therapist headcount concentrate?
1,539 Certified Respiratory Therapist NPIs span 49 states; California alone holds 368. Top metros include Greenville, NC; Los Angeles, CA; Las Vegas, NV; Miami, FL. Nationally this is 228th of 688 NUCC codes.
Where can I find a Certified Respiratory Therapist provider?
Certified Respiratory Therapist providers are listed in 49 states; Greenville leads by raw city count. By national headcount this code sits just above MOHS-Micrographic Surgery Physician and just below Perfusionist. Browse by state or search by name.
What does NUCC code 227800000X mean?
Certified Respiratory Therapist is NUCC taxonomy 227800000X in the Respiratory Therapist, Certified group. Counts are self-designated primary taxonomy at NPI enrollment, not board certification.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.