John Klein
Surgery · Chicago, IL
At a glance
1725 W Harrison St, Chicago, IL 60612-3841
Published activity: Colonoscopy. View counts and coverage
NPPES record updated Apr 30, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1725 W Harrison StChicago, IL 60612-3841
Additional reported practice locations
2201 Brunswick Dr Ste 2300Hanover, PA 173318350
Phone: 7173167165
Fax: 7173161611 1450 San Pablo St #2000
Los Angeles, CA 900893833
Phone: 8008722273 1653 W Congress Pkwy
Chicago, IL 606123833
Phone: 3129425000
Education & affiliations
- Medical / professional school
- University Of Texas Medical School At San Antonio
- Graduation year
- 2016
- CMS specialties
- General Surgery
Practice groups
Reported hospital affiliations
- Rush Oak Park Hospital Oak Park, IL
- Upmc Hanover Hanover, PA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Travel and lodging | $1,679.73 |
Reporting companies
| Company | Amount |
|---|---|
| TRANSMEDICS, INC. | $1,276.16 |
| INTUITIVE SURGICAL, INC. | $403.57 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Surgery
- Taxonomy code
- 208600000X
- Enumeration date
- Mar 22, 2016
- Record updated
- Apr 30, 2026
More registry details
- Provider type
- Individual · Type 1
Reported taxonomies and licenses
208600000X
License reported: MD494214 PA
208600000X · Primary
License reported: 036170489 IL
390200000X
208600000X
License reported: 179663 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1725 W Harrison StChicago, IL 60612-3841
- Phone
- (312) 942-4252
Mailing address
1725 W HARRISON STCHICAGO, IL 606123841
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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