Pediatric Hematology & Oncology Physician: how many are there, and how many are in private practice?

National totals

What this specialty covers

A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.

Reading the sole-proprietor share

For this specialty, 353 of 2,721 active records, or 13.0%, are flagged as sole proprietors. Because this is a self-reported NPPES field, it is an imperfect proxy for private practice and does not by itself establish ownership, employment model, independence, or whether a physician works in a group, hospital, or academic setting.

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.
• - Counts include active NPI records with this specialty as the primary taxonomy, not measures of clinical workload, patient volume, or service availability.
• - NPPES records and taxonomy fields can be updated, deactivated, or incomplete over time.
• - State totals reflect registered NPI information and may not show where services are delivered or distinguish practice and employment arrangements.
• 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