DR. ANDREW JAMES KLEIN MD
NPI 1255998282
Anesthesiology in Chicago, IL
About Dr. Andrew James Klein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW JAMES KLEIN MD (NPI 1255998282) is an individual anesthesiology provider in Chicago, Illinois, licensed in Illinois (125073781) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Edward Hospital, and is a graduate of Southern Illinois University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Andrew James Klein Md 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.
Medicare Billing Reassignments
2Medicare enrollment records show Andrew Klein reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 1,905 clinicians in this Medicare group
Naperville, IL 60540
- Reassigned Medicare billing, Illinois enrollment
- 94 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Edward Hospital
Acute Care Hospitals · Naperville, ILMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
CHICAGO, IL 60611
CHICAGO, IL 60611
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 Andrew Klein's NPI number?
The NPI number for Andrew Klein is 1255998282. It was assigned to this individual provider in the NPPES registry on May 24, 2019.
Where is Andrew Klein located?
Andrew Klein practices at 251 E Huron St, Chicago, IL 60611. The listed phone number is (312) 926-2000.
What is Andrew Klein's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Andrew Klein enrolled in Medicare?
Yes. Andrew 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.
Which organizations bill Medicare for Andrew Klein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Klein reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and Dupage Valley Anesthesiologists, Ltd. (Naperville, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Andrew Klein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Klein accept?
Health plans from Oscar Health list Andrew 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 Andrew Klein affiliated with any hospitals?
According to CMS data, Andrew Klein is affiliated with Edward Hospital.
When was this NPI record last updated?
The NPPES record for Andrew Klein was last updated on June 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Dr. Andrew James Klein, MD · NPI 1255998282
Anesthesiology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since May 24, 2019.
## Identity
- **NPI:** 1255998282 (Entity type: Individual)
- **Enumerated:** May 24, 2019
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 125073781 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 251 E HURON ST, Chicago, IL 60611-2908
- **Phone:** (312) 926-2000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); Dupage Valley Anesthesiologists, Ltd. (NPI 1457309817, Naperville, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Southern Illinois University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** June 30, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1255998282) · Data from the CMS NPPES public registry.