Individual provider Active NPI

Ankita Mahajan, DO

  • Obstetrics & Gynecology Physician
  • Oak Lawn, IL
National Provider Identifier
1639608680
Registry record updated Jan 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
125070721 Issued in IL
Practice address
4400 W 95TH St Ste 205
Oak Lawn, IL 60453-2658
Phone
(708) 684-5340
NPI assigned
Jun 5, 2017
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 7, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 125070721 IL Primary

Addresses

Primary practice location

4400 W 95TH St Ste 205
Oak Lawn, IL 60453-2658

Mailing address

29373 Network PL
Chicago, IL 60673-1293
Phone (847) 390-5900

Electronic endpoints 3

TypeEndpointUseAffiliation
CONNECT URL https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other ABILITY Network
Direct Messaging Address amahajan283520@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
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 1

Enrollment IDStateProvider typePAC IDDetails
I20210607002458 IL Practitioner - Obstetrics/Gynecology 1658641402 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Advocate Health and Hospitals CorporationGroup PAC ID 7810800935, 3,081 clinicians

Practice addresses (Care Compare)

4440 W 95TH St
Oak Lawn, IL 60453-2600
Phone (708) 684-4393

Hospital & facility affiliations

  • Advocate Christ Hospital & Medical Center Hospital, Oak Lawn, IL, CCN 140208

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
125070721ILMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Advocate Health and Hospitals Corporation Current Accepting new patients
Advocate Health and Hospitals Corporation CurrentSince Jul 16, 2021 Accepting new patients
Advocate Health and Hospitals Corporation CurrentSince Jul 16, 2021 Accepting new patients

Locations

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

29373 Network Pl
Chicago, IL 60673

4400 W 95th St
Ste 205
Oak Lawn, IL 60453
Phone (708) 346-4040

4440 W 95th St
Oak Lawn, IL 60453
Phone (708) 346-5520

Interoperability endpoints

  • Direct secure messaging: amahajan283520@direct.myadvocateaurora.org

Organizations & group practices 3

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 2

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": "1496620800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767744000000",
    "number": "1639608680",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29373 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731293",
            "telephone_number": "847-390-5900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4400 W 95TH ST STE 205",
            "city": "OAK LAWN",
            "state": "IL",
            "postal_code": "604532658",
            "telephone_number": "708-684-5340"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAHAJAN",
        "first_name": "ANKITA",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-06-05",
        "last_updated": "2026-01-07",
        "certification_date": "2026-01-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "125070721",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.667.2",
            "affiliationName": "ABILITY Network",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "64 S Price Rd Ste B",
            "city": "Brownsville",
            "state": "TX",
            "country_code": "US",
            "postal_code": "785212459",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "amahajan283520@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "4400 W 95th St Ste 205",
            "city": "Oak Lawn",
            "state": "IL",
            "country_code": "US",
            "postal_code": "604532658",
            "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": "4400 W 95th St Ste 205",
            "city": "Oak Lawn",
            "state": "IL",
            "country_code": "US",
            "postal_code": "604532658",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Oak Lawn, IL

Sources for this page

Verify at the official NPI Registry.