National totals
| Active NPI records | 4,201 |
| Registered sole proprietors | 1,535 (36.5%) |
| NUCC taxonomy code | 227900000X |
| Grouping | Respiratory, Developmental, Rehabilitative and Restorative Service Providers |
What this specialty covers
A Registered Respiratory Therapist (RRT) is an advanced therapist who has passed standardized written and clinical simulation examinations administered by the National Board for Respiratory Care (NBRC). In addition, to the certified therapist (CRT) entry level skills, RRTs have advanced education and training in patient assessment, in the development and modification of patient care plans, and in assuring the appropriate utilization of respiratory care resources. An RRT is a graduate of an associate or baccalaureate degree producing educational programs approved by the Commission on Accreditation of Allied Health Education Programs (CAAHEP) and where applicable, is licensed by the state and is practicing within the scope of that license.
Reading the sole-proprietor share
For RRT records, the sole-proprietor share identifies records whose NPPES data are flagged as sole proprietors; it is a practice-structure indicator, not a count of RRTs working in private practice. Because the field is self-reported and may not capture employment arrangements, group practices, or organizational relationships, use it as an imperfect proxy rather than a direct measure of independent clinical work or ownership.
By state
| State | Active NPIs | Sole proprietors | Share |
|---|---|---|---|
| California | 1,054 | 358 | 34.0% |
| Florida | 578 | 327 | 56.6% |
| Texas | 210 | 77 | 36.7% |
| Arizona | 188 | 81 | 43.1% |
| North Carolina | 169 | 50 | 29.6% |
| Washington | 169 | 24 | 14.2% |
| Tennessee | 134 | 29 | 21.6% |
| Ohio | 126 | 39 | 31.0% |
| New York | 108 | 35 | 32.4% |
| Georgia | 98 | 29 | 29.6% |
| Michigan | 85 | 29 | 34.1% |
| Missouri | 73 | 23 | 31.5% |
| Virginia | 68 | 19 | 27.9% |
| Nevada | 60 | 23 | 38.3% |
| Pennsylvania | 58 | 25 | 43.1% |
| Colorado | 55 | 19 | 34.5% |
| Arkansas | 55 | 11 | 20.0% |
| New Jersey | 54 | 16 | 29.6% |
| South Carolina | 54 | 21 | 38.9% |
| Wisconsin | 50 | 19 | 38.0% |
| Oregon | 50 | <11 | not reported |
| Minnesota | 42 | 15 | 35.7% |
| Indiana | 41 | 18 | 43.9% |
| Illinois | 40 | 12 | 30.0% |
| New Mexico | 39 | 14 | 35.9% |
| Mississippi | 38 | 15 | 39.5% |
| Kansas | 34 | 12 | 35.3% |
| Iowa | 32 | <11 | not reported |
| Louisiana | 30 | 18 | 60.0% |
| Nebraska | 29 | <11 | not reported |
| Massachusetts | 28 | 15 | 53.6% |
| West Virginia | 28 | <11 | not reported |
| Wyoming | 26 | 15 | 57.7% |
| Maryland | 25 | 12 | 48.0% |
| Alabama | 25 | 13 | 52.0% |
| Alaska | 24 | <11 | not reported |
| North Dakota | 23 | <11 | not reported |
| Kentucky | 22 | <11 | not reported |
| South Dakota | 21 | <11 | not reported |
| Maine | 20 | <11 | not reported |
| District of Columbia | 17 | <11 | not reported |
| Oklahoma | 16 | <11 | not reported |
| Idaho | 16 | <11 | not reported |
| Connecticut | 12 | <11 | not reported |
| Utah | 12 | <11 | not reported |
| Montana | 11 | <11 | not reported |
New NPI registrations by year
| Year first enumerated | NPIs |
|---|---|
| 2016 | 124 |
| 2017 | 170 |
| 2018 | 526 |
| 2019 | 282 |
| 2020 | 287 |
| 2021 | 189 |
| 2022 | 238 |
| 2023 | 302 |
| 2024 | 277 |
| 2025 | 405 |
Counts reflect the year each NPI was first issued, among records still active today. The final year is partial: this data covers through 2026-01-11.
Data notes
- The sole-proprietor field is self-reported by the provider in NPPES and is an imperfect proxy for private practice.
- A sole-proprietor count shown as <11 is suppressed: the true value is below 11, which could include zero.
- - These are active NPI records with the RRT taxonomy as primary, not a guaranteed count of unique clinicians, jobs, practices, or patient care volume.
- - State totals reflect NPPES location data, while enumeration counts describe first NPI issuance rather than workforce entry, current employment, or demand.
- Providers are counted once, by their primary taxonomy code only.
Common questions
How many Registered Respiratory Therapists are there in the United States?
The data show 4,201 active NPI records with Registered Respiratory Therapist as the primary taxonomy. This is a count of records, not necessarily a count of unique people or practices.
How many RRTs are in private practice?
NPPES flags 1,535 records, or 36.5%, as sole proprietors. This flag is an imperfect proxy for private practice and should not be treated as a direct count of RRTs who own or operate private practices.
Which states have the most Registered Respiratory Therapists?
The largest state counts are California (1,054), Florida (578), Texas (210), Arizona (188), and North Carolina (169).
How many new RRT NPI records were first enumerated recently?
Among NPIs first enumerated in the most recent full years available, the counts were 302 in 2023, 277 in 2024, and 405 in 2025. Enumeration year shows when an NPI was first issued, not necessarily when a clinician began practicing.
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