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

Dr. Ivan Guan, MD

Individual provider Neurology Physician · NPI 1649850348

Dr. Ivan Guan, MD is a Neurology Physician in Chicago, Illinois. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2021
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 # 2030
Chicago, IL 60637-1443
Phone: (773) 702-6222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 550 1st Ave, New York, NY 10016-6402 — (212) 263-5506

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 036.175387 (IL)

Record details

NPI number1649850348
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 8, 2021
Last updated in NPPESJune 12, 2025
Certification dateJune 12, 2025

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.

Grant $10,000 1 payment · funding for a project or programme, not a fee for the clinician’s time
Travel and Lodging $1,798 15 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $662 11 payments · 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.

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