NPIMap

Individual provider Active NPI

Nader Ismail, DO

  • Nephrology Physician
  • Merrillville, IN
National Provider Identifier
1689135618
Registry record updated Jun 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
02007817A Issued in IN
Practice address
90 W 86TH Ave
Merrillville, IN 46410-7086
Phone
(219) 791-1555
NPI assigned
Mar 31, 2019
Last updated
Jun 19, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 19, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X 036.161002 IL
Nephrology Physician 207RN0300X 02007817A IN Primary

Addresses

Primary practice location

90 W 86TH Ave
Merrillville, IN 46410-7086

Mailing address

120 W 22ND St
Oak Brook, IL 60523-1557
Phone (630) 573-5000

Other practice location 1

5615 US Highway 6
Portage, IN 46368-5213
Phone (219) 462-6001

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address credentialing@nephdocs.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IN, IL2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20240502002113 IN Practitioner - Nephrology 2163862582 Reassigns benefits to 1 organization
I20240702000324 IL Practitioner - Nephrology 2163862582 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Nephrology Associates of Northern Indiana PCGroup PAC ID 8921033440, 64 clinicians

Practice addresses (Care Compare)

90 W 86TH Ave
Nephrology Associates of Northern Indiana P
Merrillville, IN 46410-7086
Phone (219) 791-1555

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
036.161002ILMDNephrology Physician
02007817AINMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Nephrology Associates of Northern Indiana, Inc Nephrology CurrentSince Jun 1, 2024 Accepting new patients
Northwest Indiana Nephrology PC Nephrology PastSince Apr 17, 2012 Accepting new patients
The Dialysis Center of Portage LLC Past Accepting new patients

Locations

120 W 22nd St
Oak Brook, IL 60523

120 W 22nd St
Ste 200
Oak Brook, IL 60523
Phone (630) 575-5000

4320 Fir St
Unit 417
East Chicago, IN 46312
Phone (219) 791-1555

569 Tyler St
Gary, IN 46402
Phone (260) 885-3300

90 W 86th Ave
Merrillville, IN 46410
Phone (219) 791-1555

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
  • Direct secure messaging: nismail65560@direct.acumenmd.com

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 8

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": "1553990400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750291200000",
    "number": "1689135618",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "120 W 22ND ST",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605231557",
            "telephone_number": "630-573-5000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "90 W 86TH AVE",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464107086",
            "telephone_number": "219-791-1555"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5615 US Highway 6",
            "address_purpose": "LOCATION",
            "city": "Portage",
            "state": "IN",
            "postal_code": "463685213",
            "country_code": "US",
            "telephone_number": "219-462-6001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ISMAIL",
        "first_name": "NADER",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-03-31",
        "last_updated": "2025-06-19",
        "certification_date": "2025-06-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IL",
            "license": "036.161002",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IN",
            "license": "02007817A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "credentialing@nephdocs.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "120 W 22nd St",
            "city": "Oak Brook",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605231557",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Merrillville, IN

Sources for this page

Verify at the official NPI Registry.