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

John Klein

Individual provider Surgery Physician · NPI 1669834313

John Klein practises General Surgery in Chicago, Illinois. Graduated from University of Texas Medical School at San Antonio in 2016, 10 years ago. Practices with Rush University Medical Group, a 1,499-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California, Illinois and Pennsylvania.

Years since qualifying
10
Trained at
University of Texas Medical School at San Antonio
Licensed in
CA, IL, PA
In the registry since
2016
Specialties on file
4
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Practice location Address checks out

1725 W Harrison St
Chicago, IL 60612-3841
Phone: (312) 942-4252
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 (3)

  • 1450 San Pablo St #2000, Los Angeles, CA 90089-3833 — (800) 872-2273
  • 1653 W Congress Pkwy, Chicago, IL 60612-3833 — (312) 942-5000
  • 2201 Brunswick Dr Ste 2300, Hanover, PA 17331-8350 — (717) 316-7165

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 036170489 (IL)
Surgery Physician Taxonomy 208600000X · Licence MD494214 (PA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X
Surgery Physician Taxonomy 208600000X · Licence 179663 (CA)

Record details

NPI number1669834313
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 22, 2016
Last updated in NPPESApril 30, 2026
Certification dateApril 30, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2016 (10 years in practice)
Group practice Rush University Medical Group — 1499 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.

Colonoscopy 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 patients35
Services billed 81 a service is one billed item, such as a visit, a test or a procedure
Average patient age64

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.

Travel and Lodging $1,680 8 payments · travel or lodging paid or reimbursed, such as to attend a conference

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 Rush University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1499 clinicians in the practice; 12 are shown here.

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