Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Nathalie Antonios, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1902301138

Nathalie Antonios, MD is a Pulmonary Disease in Chicago, Illinois. Qualified in 2018, 8 years ago. Practices with The University of Chicago Medical Center, a 909-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
8
Licensed in
IL
In the registry since
2018
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5841 S Maryland Ave
Chicago, IL 60637-1443
Phone: (773) 702-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1000 N Westmoreland Rd, Lake Forest, IL 60045-1658 — (847) 234-5600

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 036156686 (IL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 036156686 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 036156686 (IL)

Record details

NPI number1902301138
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2018
Last updated in NPPESFebruary 6, 2026
Certification dateFebruary 6, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice The University Of Chicago Medical Center — 909 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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