DR. NIROSUTHAN RAJASINGAM MD
NPI 1790125474
Internal Medicine - Cardiovascular Disease in Chicago, IL
About Dr. Nirosuthan Rajasingam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NIROSUTHAN RAJASINGAM MD (NPI 1790125474) is an individual cardiovascular disease provider in Chicago, Illinois, licensed in Illinois (036141000) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Mt Sinai Hospital Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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. Nirosuthan Rajasingam 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
5Medicare enrollment records show Nirosuthan Rajasingam reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60608
- Reassigned Medicare billing, Illinois enrollment
- 646 clinicians in this Medicare group
Chicago, IL 60641
- Reassigned Medicare billing, Illinois enrollment
- 122 clinicians in this Medicare group
Hoopeston, IL 60942
- Reassigned Medicare billing, Illinois enrollment
- 488 clinicians in this Medicare group
Urbana, IL 61801
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Carle Health Care Incorporated
- 2,516 clinicians in this Medicare group
Olney, IL 62450
- Reassigned Medicare billing, Illinois enrollment
- 301 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mt Sinai Hospital Medical Center
Acute Care Hospitals · Chicago, ILCarle Foundation Hospital
Acute Care Hospitals · Urbana, ILFhn Memorial Hospital
Acute Care Hospitals · Freeport, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60608 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 60608
CHICAGO, IL 60608
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 Nirosuthan Rajasingam's NPI number?
The NPI number for Nirosuthan Rajasingam is 1790125474. It was assigned to this individual provider in the NPPES registry on June 26, 2013.
Where is Nirosuthan Rajasingam located?
Nirosuthan Rajasingam practices at 1500 S Fairfield Ave Ap, Chicago, IL 60608. The listed phone number is (773) 542-2000.
What is Nirosuthan Rajasingam's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Nirosuthan Rajasingam enrolled in Medicare?
Yes. Nirosuthan Rajasingam 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 Nirosuthan Rajasingam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nirosuthan Rajasingam reassigns Medicare benefits to 5 organizations: Mount Sinai Community Foundation (Chicago, IL), Knd Development 59 LLC (Chicago, IL), Hoopeston Community Memorial Hospital (Hoopeston, IL), Carle Health Medical Group (Urbana, IL) and Richland Memorial Hospital, Inc. (Olney, 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 Nirosuthan Rajasingam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nirosuthan Rajasingam affiliated with any hospitals?
According to CMS data, Nirosuthan Rajasingam is affiliated with Mt Sinai Hospital Medical Center, Carle Foundation Hospital and Fhn Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Nirosuthan Rajasingam was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Nirosuthan Rajasingam, MD · NPI 1790125474
Cardiovascular Disease physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since June 26, 2013.
## Identity
- **NPI:** 1790125474 (Entity type: Individual)
- **Enumerated:** June 26, 2013
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 036141000 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 S FAIRFIELD AVE, AP, Chicago, IL 60608-1782
- **Phone:** (773) 542-2000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Mount Sinai Community Foundation (NPI 1649318148, Chicago, IL); Knd Development 59 LLC (NPI 1447589981, Chicago, IL); Hoopeston Community Memorial Hospital (NPI 1578504544, Hoopeston, IL); Carle Health Medical Group (NPI 1154653947, Urbana, IL); Richland Memorial Hospital, Inc. (NPI 1053792689, Olney, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** August 31, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1790125474) · Data from the CMS NPPES public registry.