DR. PETER D HART MD
NPI 1043237050
Internal Medicine - Nephrology in Chicago, IL
About Dr. Peter D Hart Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETER D HART MD (NPI 1043237050) is an individual nephrology provider in Chicago, Illinois, licensed in Illinois (036091746) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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. Peter D Hart 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 Peter Hart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 1,047 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- 161 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
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.
John H Stroger Jr Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60622 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60622
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 Peter Hart's NPI number?
The NPI number for Peter Hart is 1043237050. It was assigned to this individual provider in the NPPES registry on July 16, 2006.
Where is Peter Hart located?
Peter Hart practices at 2222 W Division St Ste 260, Chicago, IL 60622. The listed phone number is (630) 573-5000.
What is Peter Hart's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Peter Hart enrolled in Medicare?
Yes. Peter Hart 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 Peter Hart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Hart reassigns Medicare benefits to 2 organizations: Cook County (Chicago, IL) and Nephrology Associates Of Northern Illinois, Ltd. (Oak Brook, 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 Peter Hart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Peter Hart affiliated with any hospitals?
According to CMS data, Peter Hart is affiliated with John H Stroger Jr Hospital.
When was this NPI record last updated?
The NPPES record for Peter Hart was last updated on August 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Peter D Hart, MD · NPI 1043237050
Nephrology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since July 16, 2006.
## Identity
- **NPI:** 1043237050 (Entity type: Individual)
- **Enumerated:** July 16, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 036091746 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2222 W DIVISION ST STE 260, Chicago, IL 60622-2990
- **Phone:** (630) 573-5000
## 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): Cook County (NPI 1861513996, Chicago, IL); Nephrology Associates Of Northern Illinois, Ltd. (NPI 1124069182, Oak Brook, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1982
## Record status
- **NPPES last updated:** August 9, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1043237050) · Data from the CMS NPPES public registry.