John Klein
John Klein is a General Surgery provider in Chicago, IL, as of July 2026.
- NPI1669834313
- Registered2016
- Class of2016
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
John Klein at a glance
- Provider
- John Klein
- Specialty
- General Surgery
- Procedures
- General Surgery CPT codes
- Location
- Chicago, IL
- Medical school
- University of Texas Medical School at San Antonio
- Graduated
- 2016
- NPI registered
- 2016
- NPI
- 1669834313
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does John Klein practice?
John Klein is based in Chicago, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Klein's NPI number?
John Klein's National Provider Identifier (NPI) is 1669834313, registered in 2016. Specialty on record: General Surgery.
Where did John Klein go to medical school?
John Klein attended University of Texas Medical School at San Antonio, graduating in 2016.
How many General Surgery providers in Illinois work at ambulatory surgery centers?
109 General Surgery surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Klein among them. The Illinois General Surgery directory lists each one by city with credential, NPI, and center affiliations.
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