Individual provider Active NPI

Sanja Nikolich, MD

  • Surgical Critical Care Physician
  • Park Ridge, IL
National Provider Identifier
1255364063
Registry record updated Nov 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgical Critical Care PhysicianTaxonomy code 2086S0102X
License
036084811 Issued in IL
Practice address
1775 Dempster St
Park Ridge, IL 60068-1143
Phone
(847) 723-6523
NPI assigned
Jul 8, 2006
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 12, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Surgical Critical Care Physician 2086S0102X 036084811 IL Primary
Trauma Surgery Physician 2086S0127X 036084811 IL
Surgery Physician 208600000X 036084811 IL

Addresses

Primary practice location

1775 Dempster St
Park Ridge, IL 60068-1143

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other identifiers 2

IdentifierTypeStateIssuer
036084811MedicaidIL
100326073MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address snikolich237873@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL, WI2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20070111000336 IL Practitioner - General SurgeryPractitioner - Critical Care (Intensivists) 4587664727 Reassigns benefits to 1 organization
I20250602002206 WI Practitioner - Critical Care (Intensivists) 4587664727 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Advocate Health and Hospitals Corporation CurrentSince Apr 1, 2008 Accepting new patients
Aurora Medical Group, Inc. CurrentSince May 1, 2025 Accepting new patients
Advocate Health and Hospitals Corporation CurrentSince Apr 1, 2008 Accepting new patients
Aurora Medical Group, Inc. CurrentSince May 1, 2025 Accepting new patients
Advocate North Side Health Network Past Accepting new patients

Locations

214 McHenry Rd
Buffalo Grove, IL 60089
Phone (847) 459-1160

836 W Wellington Ave
Chicago, IL 60657
Phone (773) 296-7054

29373 Network Pl
Chicago, IL 60673

75 Remittance Dr
Chicago, IL 60675

75 Remittance Dr
Dept 6994
Chicago, IL 60675

1301 E 47th St
Chicago, IL 60653
Phone (773) 493-8212

1555 N Barrington Rd
Hoffman Estates, IL 60169
Phone (847) 490-2923

1775 W Dempster St
Park Ridge, IL 60068
Phone (847) 723-5150

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

14555 W National Ave
Ste 140
New Berlin, WI 53151
Phone (262) 827-0480

Interoperability endpoints

  • Direct secure messaging: snikolich21016@cghmc.direct-ci.com
  • Direct secure messaging: snikolich237873@direct.myadvocateaurora.org

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1152316800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1255364063",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1775 DEMPSTER ST",
            "city": "PARK RIDGE",
            "state": "IL",
            "postal_code": "600681143",
            "telephone_number": "847-723-6523"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIKOLICH",
        "first_name": "SANJA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-07-08",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "IL",
            "license": "036084811",
            "primary": true
        },
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "IL",
            "license": "036084811",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "IL",
            "license": "036084811",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036084811",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100326073",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "snikolich237873@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1775 Dempster St",
            "city": "Park Ridge",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600681143",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "1775 Dempster St",
            "city": "Park Ridge",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600681143",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Park Ridge, IL

Sources for this page

Verify at the official NPI Registry.