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Dr. Andrew Hallmark

Anesthesiology (Anesthesiology Physician)

251 E Huron St
Chicago, IL 60611

Who else practices at this address →

Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (630) 933-4800

  • Medicare participating

At a glance

Years since graduation
7
In the NPI registry since
2019
Medicare patients seen, 2024
34

Licensed in Illinois since 2023, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

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

  • 2019Medical school: University of Florida College of Medicine
  • 2019Registered 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

  • Anesthesiology Physician primary
    CA license A192127 (first issued 2023; current) · IL license 036.164135 (first issued 2023; active)
  • Student in an Organized Health Care Education/Training Program
    MI license 4351044182

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

Map: Anesthesiology 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
34
Services billed
45
Patients’ average age
70

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 Anesthesiology clinicians in Chicago

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 6, 2026), 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 1255992855. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.