NPIMap

Individual provider Active NPI

Aparna Natarajan, MD

  • Nephrology Physician
  • Chicago, IL
National Provider Identifier
1417264144
Registry record updated May 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
036132096 Issued in IL
Practice address
1725 W Harrison St Ste 762
Chicago, IL 60612-3852
Phone
(312) 563-1230
NPI assigned
Sep 1, 2010
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 5, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X 036132096 IL Primary

Addresses

Primary practice location

1725 W Harrison St Ste 762
Chicago, IL 60612-3852

Mailing address

1725 W Harrison St Ste 762
Chicago, IL 60612-3852
Phone (312) 563-1230

Other practice location 1

2222 W Division St Ste 210
Chicago, IL 60622-3094
Phone (773) 484-4330

Other identifiers 1

IdentifierTypeStateIssuer
036132096MedicaidIL

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20131014000441 IL Practitioner - NephrologyPractitioner - Internal Medicine 3072747799 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Other, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Rush University Medical GroupGroup PAC ID 5496658874, 1,521 clinicians
Northwest Medical Associates of Chicago LLCGroup PAC ID 3274537998, 3 clinicians

Practice addresses (Care Compare)

1725 W Harrison St
Suite 762
Chicago, IL 60612-3852
Phone (312) 942-8120

2222 W Division St
Suite 210
Chicago, IL 60622-3094
Phone (773) 227-2004

Hospital & facility affiliations

  • Saint Anthony Hospital Hospital, Chicago, IL, CCN 140095
  • Humboldt Park Health Hospital, Chicago, IL, CCN 140206
  • Presence Saints Mary and Elizabeth Medical Center Hospital, Chicago, IL, CCN 140180
  • Rush University Medical Center Hospital, Chicago, IL, CCN 140119

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
East Oaks Dialysis LLC PastSince May 15, 2020 Accepting new patients
Rush University Medical Group Internal Medicine Past Accepting new patients

Organizations & group practices 4

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.

Hospital & facility affiliations 12

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1283299200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777939200000",
    "number": "1417264144",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1725 W HARRISON ST STE 762",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123852",
            "telephone_number": "312-563-1230"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1725 W HARRISON ST STE 762",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123852",
            "telephone_number": "312-563-1230"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2222 W Division St Ste 210",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606223094",
            "country_code": "US",
            "telephone_number": "773-484-4330",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NATARAJAN",
        "first_name": "APARNA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-09-01",
        "last_updated": "2026-05-05",
        "certification_date": "2026-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IL",
            "license": "036132096",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036132096",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.