Skip to main content

Dr. John Warner

Emergency Medicine (Emergency Medicine Physician)

  • Medicare participating

At a glance

In the NPI registry since
2019
Medicare patients seen, 2024
30

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2019Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Emergency Medicine Physician primary
    PA license 1043772866

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Emergency Medicine per capita by county →

Medicare patients and services

Medicare patients, 2024
30
Services billed
57
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Emergency department visit with high level of medical decision making104100
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only10090
Emergency department visit with moderate level of medical decision making8075
Critical care, first 30-74 minutes3735

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Other Emergency Medicine clinicians in Pittsburgh

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 14, 2022), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1043772866. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.