Home / Provider data / Registered Respiratory Therapist: how many are there, and how many are in private practice?

Registered Respiratory Therapist: how many are there, and how many are in private practice?

Under the NUCC definition, 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, with training beyond certified therapist entry-level skills in assessment and care planning. This page summarizes active US NPI records with this taxonomy as primary, including the national count, sole-proprietor flag, state distribution, and recent enumeration patterns.

National totals

Active NPI records4,201
Registered sole proprietors1,535 (36.5%)
NUCC taxonomy code227900000X
GroupingRespiratory, 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

StateActive NPIsSole proprietorsShare
California1,05435834.0%
Florida57832756.6%
Texas2107736.7%
Arizona1888143.1%
North Carolina1695029.6%
Washington1692414.2%
Tennessee1342921.6%
Ohio1263931.0%
New York1083532.4%
Georgia982929.6%
Michigan852934.1%
Missouri732331.5%
Virginia681927.9%
Nevada602338.3%
Pennsylvania582543.1%
Colorado551934.5%
Arkansas551120.0%
New Jersey541629.6%
South Carolina542138.9%
Wisconsin501938.0%
Oregon50<11not reported
Minnesota421535.7%
Indiana411843.9%
Illinois401230.0%
New Mexico391435.9%
Mississippi381539.5%
Kansas341235.3%
Iowa32<11not reported
Louisiana301860.0%
Nebraska29<11not reported
Massachusetts281553.6%
West Virginia28<11not reported
Wyoming261557.7%
Maryland251248.0%
Alabama251352.0%
Alaska24<11not reported
North Dakota23<11not reported
Kentucky22<11not reported
South Dakota21<11not reported
Maine20<11not reported
District of Columbia17<11not reported
Oklahoma16<11not reported
Idaho16<11not reported
Connecticut12<11not reported
Utah12<11not reported
Montana11<11not reported

New NPI registrations by year

Year first enumeratedNPIs
2016124
2017170
2018526
2019282
2020287
2021189
2022238
2023302
2024277
2025405

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

Source: CMS National Plan and Provider Enumeration System (NPPES) Data Dissemination file, FOIA-disclosable public data under CMS-6060-N. Aggregated by Hero EMR on 2026-08-03; deactivated NPIs excluded; specialty assigned from the primary taxonomy code (NUCC 25.1). Counts below 11 are suppressed. Individual providers are never published. All provider data pages.

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.

Built for independent practices

Hero EMR is an EMR and practice-management platform for practices that run themselves. The first physician is free.

See a demo