DR. SANJA NIKOLICH MD
NPI 1255364063
Surgery - Surgical Critical Care in Park Ridge, IL
About Dr. Sanja Nikolich Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SANJA NIKOLICH MD (NPI 1255364063) is an individual surgical critical care provider in Park Ridge, Illinois, licensed in Illinois (036084811) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
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)
Dr. Sanja Nikolich Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Sanja Nikolich reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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.
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.
PARK RIDGE, IL 60068
PARK RIDGE, IL 60068
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 Sanja Nikolich's NPI number?
The NPI number for Sanja Nikolich is 1255364063. It was assigned to this individual provider in the NPPES registry on July 8, 2006.
Where is Sanja Nikolich located?
Sanja Nikolich practices at 1775 Dempster St, Park Ridge, IL 60068. The listed phone number is (847) 723-6523.
What is Sanja Nikolich's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Sanja Nikolich enrolled in Medicare?
Yes. Sanja Nikolich is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Sanja Nikolich's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sanja Nikolich reassigns Medicare benefits to 2 organizations: Lutheran General Hospital (Park Ridge, IL) and Aurora Medical Group, Inc. (Milwaukee, WI). 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 Sanja Nikolich's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sanja Nikolich accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Aspirus Health Plan and CareSource (Common Ground Healthcare) list Sanja Nikolich 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.
When was this NPI record last updated?
The NPPES record for Sanja Nikolich was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.