Sleep Disorder Diagnostic Clinic/Center: how many are there, and how many are in private practice?

National totals

Reading the sole-proprietor share

For this specialty, the sole-proprietor measure is best read as the share of NPPES records that identify themselves with that flag, rather than as the share of clinics in private practice. Here, 37 records, or 1.3%, carry the flag. Because the field is self-reported and can be incomplete or outdated, it is an imperfect proxy for private practice and does not establish ownership or independence.

By state

New NPI registrations by year

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.
• NPPES records and taxonomy selections may be incomplete, outdated, or not reflect an entity's full service mix.
• An active NPI does not by itself verify current operations, physical locations, or distinct provider counts.
• Providers are counted once, by their primary taxonomy code only.

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