Endocrinology, Diabetes & Metabolism Physician: how many are there, and how many are in private practice?

National totals

What this specialty covers

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Reading the sole-proprietor share

For this specialty, the sole-proprietor share is the portion of active primary-taxonomy records whose NPPES data include a sole-proprietor flag, currently 1,693 records, or 16.4%. It can help describe how records are reported, but it is a self-reported NPPES field and an imperfect proxy for private practice because it does not by itself show ownership, employment arrangement, or whether a physician works independently.

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.
• - NPI records are identifiers, not a direct measure of unique physicians, clinical full-time equivalents, or patient volume.
• - Active status and primary taxonomy are NPPES fields that may change and may not fully reflect a physician’s current clinical work.
• 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