Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Catherine Gao, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1043699689

Catherine Gao, MD is registered under Pulmonary Disease in Chicago, Illinois. Graduated from University of Michigan Medical School in 2015, 11 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
11
Trained at
University of Michigan Medical School
Licensed in
IL
In the registry since
2015
Specialties on file
2
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

675 N Saint Clair St Ste 18-250
Chicago, IL 60611-5980
Phone: (312) 695-1800
Fax: (312) 908-4650
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 20 York St, New Haven, CT 06510-3220 — (203) 688-8300

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 036.148849 (IL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 036148849 (IL)

Record details

NPI number1043699689
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 28, 2015
Last updated in NPPESAugust 23, 2022
Certification dateAugust 23, 2022

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2015 (11 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients20
Services billed 48 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $34 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Northwestern Medical Faculty Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4394 clinicians in the practice; 12 are shown here.

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