DR. SANJA NIKOLICH MD
NPI 1255364063
Surgery - Surgical Critical Care in Park Ridge, IL

Active since July 08, 2006PECOS Enrolled
1775 DEMPSTER ST, PARK RIDGE, IL 60068(847) 723-6523 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 12, 2025, May 13, 2025, Feb 20, 2023 and 1 more (4 updates tracked since 2018).

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

NPI1255364063
Entity TypeIndividualFemale
Primary Taxonomy2086S0102X
Provider Legal NameDR. SANJA NIKOLICHCredential: MD
Location Address1775 DEMPSTER STPark Ridge, IL 60068-1143
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Sole ProprietorYes
Enumeration DateJuly 8, 2006
Last NPPES UpdateNovember 12, 20254 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1255364063 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in IL · 036084811
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedSurgeryTaxonomy 208600000X · License 036084811 (IL)
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License 036084811 (IL)
1775 DEMPSTER ST, Park Ridge, IL 60068

Other Identifiers 2

Medicaid036084811IL
Medicaid100326073WI

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).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare 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.

Cardiovascular Disease
1775 DEMPSTER ST
Park Ridge, IL 60068
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Advocate Health And Hospitals Corporation
  • 4,870 clinicians in this Medicare group
Nurse Anesthetist, Certified Registered
3301 W FOREST HOME AVE
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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
33 services28 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
23 services17 patients

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.

Physician Assistant (Surgical)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Nurse's Aide
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Nurse Practitioner (Critical Care Medicine)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Registered Nurse (Emergency)
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Emergency Medicine
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Hospitalist
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Pharmacist
1775 DEMPSTER ST
PARK RIDGE, IL 60068
Physical Medicine & Rehabilitation
1775 DEMPSTER ST
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.