RAJINDER MAHAY MD
NPI 1669490421
Internal Medicine in Granite City, IL
About Rajinder Mahay Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RAJINDER MAHAY MD (NPI 1669490421) is an individual internal medicine provider in Granite City, Illinois, licensed in Illinois (036088697) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Gateway Regional Medical Center, and is a graduate of Other (1986).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Rajinder Mahay Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Rajinder Mahay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Granite City, IL 62040
- Reassigned Medicare billing, Illinois enrollment
- 107 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 17
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Gateway Regional Medical Center
Acute Care Hospitals · Granite City, ILMemorial Hospital
Acute Care Hospitals · Belleville, ILAnderson Hospital
Acute Care Hospitals · Maryville, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 62040 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 15
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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRANITE CITY, IL 62040
GRANITE CITY, IL 62040
GRANITE CITY, IL 62040
GRANITE CITY, IL 62040
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 Rajinder Mahay's NPI number?
The NPI number for Rajinder Mahay is 1669490421. It was assigned to this individual provider in the NPPES registry on July 18, 2006.
Where is Rajinder Mahay located?
Rajinder Mahay practices at 2044 Madison Ave Suite 15, Granite City, IL 62040. The listed phone number is (618) 451-1500.
What is Rajinder Mahay's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rajinder Mahay enrolled in Medicare?
Yes. Rajinder Mahay is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Rajinder Mahay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rajinder Mahay reassigns Medicare benefits to Ahs Il Medical Group LLC (Granite City, IL). The 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 Rajinder Mahay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rajinder Mahay accept?
Health plans from UnitedHealthcare list Rajinder Mahay 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 Rajinder Mahay affiliated with any hospitals?
According to CMS data, Rajinder Mahay is affiliated with Gateway Regional Medical Center, Memorial Hospital and Anderson Hospital.
When was this NPI record last updated?
The NPPES record for Rajinder Mahay was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.