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Dr. Omar H. Elsayed-ali, MD

Allergy & Immunology (Allergy & Immunology (Internal Medicine) Physician)

  • Medicare participating

At a glance

Years since graduation
9
In the NPI registry since
2017
Medicare patients seen, 2024
198

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

  • 2017Medical school: Vanderbilt University School of Medicine
  • 2017Registered 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

  • Allergy & Immunology (Internal Medicine) Physician primary
    MO license 2019034401
  • Internal Medicine Physician
    MO license 2019034401
  • Pediatric Emergency Medicine (Pediatrics) Physician
    MO license 2019034401
  • Pediatrics Physician
    MO license 2019034401

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

Map: Allergy & Immunology 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
198
Services billed
5,779
Patients’ average age
69
Most frequent Medicare services, 2023
ServiceTimesPatients
Professional service for multiple injections of allergen2611
New patient office or other outpatient visit, 45-59 minutes1717

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.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Allergy & Immunology clinicians in Saint Louis

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 17, 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 Information is self-reported or billed data and may be out of date; call before visiting.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 1174064596. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.