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Dr. David L. Convissar, MD

Critical Care Medicine (Critical Care Medicine (Internal Medicine) Physician)

  • Medicare participating

At a glance

Years since graduation
10
In the NPI registry since
2016
Medicare patients seen, 2024
260

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

  • 2016Medical school: Rutgers New Jersey Medical School
  • 2016Registered with an NPI (national billing number; not a license date)

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

  • Critical Care Medicine (Internal Medicine) Physician primary
    FL license ME172872
  • Anesthesiology Physician
    MA license 282202
  • Critical Care Medicine (Anesthesiology) Physician
    PA license MD483227

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

Map: Critical Care Medicine per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
260
Services billed
290
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Critical care, first 30-74 minutes9949
Anesthesia for procedure to correct abnormal heart rhythm3535
Insertion of probe in esophagus for heart ultrasound2929
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope2928
Anesthesia for procedure to assess heart electrical activity2222
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes2119
Insertion of artery tube for blood sampling or infusion through skin1513
Anesthesia for other procedure on large bowel using an endoscope1111

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.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $150 in total to this clinician.

By company
Stryker Corporation$150
By type
Food and Beverage$150

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Florida →

Other Critical Care Medicine clinicians in Orlando

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 6, 2025), 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 1831546258. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.