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JOHN KLEIN
NPI 1669834313
Surgery in Chicago, IL

Active since March 22, 2016PECOS EnrolledAccepts Medicare Assignment
1725 W HARRISON ST, CHICAGO, IL 60612(312) 942-4252 Get Directions Write a Review

NPPES record last updated: April 30, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Apr 30, 2026, Jul 23, 2024, Jul 21, 2022 and 1 more (4 updates tracked since 2016).

About John Klein NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN KLEIN (NPI 1669834313) is an individual surgery provider in Chicago, Illinois, licensed in Illinois (036170489) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Rush Oak Park Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1669834313
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameJOHN KLEIN
Location Address1725 W HARRISON STChicago, IL 60612-3841
Mailing Address1725 W Harrison StChicago, IL 60612-3841 · (312) 942-4252
Phone(312) 942-4252
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2016
Enumeration DateMarch 22, 2016
Last NPPES UpdateApril 30, 20264 updates tracked since enumeration
NPPES CertifiedApril 30, 2026
✔ NPI 1669834313 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Licenses✔ Licensed in IL · 036170489✔ Licensed in PA · MD494214✔ Licensed in CA · 179663
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1725 W HARRISON ST, Chicago, IL 60612
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Secondary Practice Locations 3

Location 11450 San Pablo St #2000Los Angeles, CA 90089-3833 · Phone (800) 872-2273
Location 21653 W Congress PkwyChicago, IL 60612-3833 · Phone (312) 942-5000
Location 32201 Brunswick Dr Ste 2300Hanover, PA 17331-8350 · Phone (717) 316-7165 · Fax (717) 316-1611

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Klein is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6800276015
PECOS Enrollment IDI20241003002628, I20260604004343
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
34 services16 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
14 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Rush Oak Park Hospital

Acute Care Hospitals · Oak Park, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140063
Location520 S Maple AveOak Park, IL 60304 · Cook County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MARTA BATUS MD
Internal Medicine (Medical Oncology)
1725 W HARRISON ST, SUITE 809
CHICAGO, IL 60612
Cook County (312) 563-2487
KM WILLIAMS MD SC
Clinic/Center (Ophthalmologic Surgery)
1725 W HARRISON ST, STE 910
CHICAGO, IL 60612
Cook County (312) 622-7320
KENNETH M BOYER M.D.
Pediatrics (Pediatric Infectious Diseases)
1725 W HARRISON ST, SUITE 710
CHICAGO, IL 60612
Cook County (312) 942-3034
RUSH UNIVERSITY MEDICAL CENTER
Internal Medicine (Hematology)
1725 W HARRISON ST, SUITE 1010
CHICAGO, IL 60612
Cook County (312) 942-5904
DAVID ANSELL M.D.
Internal Medicine
1725 W HARRISON ST, SUITE 263
CHICAGO, IL 60612
Cook County (312) 942-6700
MIDWEST NEUROPSYCHIATRIC ASSOC LTD
Specialist
1725 W HARRISON ST, SUITE 744
CHICAGO, IL 60612
Cook County (312) 942-0118
JANICE DIESCHBOURG M.D.
Radiology (Diagnostic Radiology)
1725 W HARRISON ST, SUITE 155
CHICAGO, IL 60612
Cook County (312) 563-3269
AFFILIATED UROLOGISTS, LTD
Specialist
1725 W HARRISON ST, SUITE 762
CHICAGO, IL 60612
Cook County (312) 563-3447

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Klein's NPI number?

The NPI number for John Klein is 1669834313. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Where is John Klein located?

John Klein practices at 1725 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 942-4252.

What is John Klein's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is John Klein enrolled in Medicare?

Yes. John Klein is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Klein accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list John Klein as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Klein affiliated with any hospitals?

According to CMS data, John Klein is affiliated with Rush Oak Park Hospital.

When was this NPI record last updated?

The NPPES record for John Klein was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.