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

Alexis Warren

Individual provider Internal Medicine Physician · NPI 1457880171

Alexis Warren practises Ophthalmology in Chicago, Illinois. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 2017, 9 years ago. Practices with The University of Chicago Medical Center, a 909-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa and Illinois.

Years since qualifying
9
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
IA, IL
In the registry since
2017
Specialties on file
3
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Practice location Address checks out

1855 W Taylor St
Chicago, IL 60612-7242
Phone: (312) 996-6590
Fax: (312) 996-6660
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5841 S Maryland Ave, Chicago, IL 60637-1443 — (773) 702-1000

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 036.155464 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence R10912 (IA)
Ophthalmology Physician Taxonomy 207W00000X · Licence R10912 (IA)

Record details

NPI number1457880171
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJune 6, 2017
Last updated in NPPESSeptember 12, 2024
Certification dateSeptember 12, 2024

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 2017 (9 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

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients285
Services billed 1,397 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Consulting Fee $9,775 2 payments
Travel and Lodging $789 4 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $777 12 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at The University of Chicago Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 909 clinicians in the practice; 12 are shown here.

Other providers in Chicago