NPIMap

Organization Active NPI

Nani Elk Grove

  • Nephrology Physician
  • Oak Brook, IL
National Provider Identifier
1154675528
Registry record updated Feb 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
Legal business name
NANI ELK GROVE
Practice address
120 W 22ND St
Oak Brook, IL 60523-1563
Phone
(630) 573-5000
Fax
(708) 386-2839
NPI assigned
Nov 6, 2012
Last updated
Feb 4, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
NEPHROLOGY ASSOCIATES OF NORTHERN ILLINOISAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Feb 4, 2026

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

Authorized official

Name
Dr. Manish M. Tanna, M.D.NPI 1821096470
Title
President
Phone
(630) 573-5000

Authorized official NPPES reports the official by name only. The link goes to the one practitioner with that name whose NPPES practice address or phone number is this organization’s.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207RN0300X Primary

Addresses

Primary practice location

120 W 22ND St
Oak Brook, IL 60523-1563

Mailing address

120 W 22ND St
Oak Brook, IL 60523-1563
Phone (630) 573-5000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20130529000429 IL Part B Supplier - Clinic/Group Practice 8123266376 Receives reassigned benefits from 27 practitioners
Practice locations: Elk Grove Village, IL; Hoffman Estates, IL

National Provider Directory

National Provider Directory
Part of
Nephrology Associates of Northern Illinois

Locations

800 Biesterfield Rd
Ste 104
Elk Grove Village, IL 60007
Phone (847) 593-9182

Practitioners & affiliated clinicians

Practitioners 29

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 29

NPI Registry JSON

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

{
    "created_epoch": "1352160000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1770163200000",
    "number": "1154675528",
    "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": "605231563",
            "telephone_number": "630-573-5000",
            "fax_number": "847-952-9338"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "120 W 22ND ST",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605231563",
            "telephone_number": "630-573-5000",
            "fax_number": "708-386-2839"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NANI ELK GROVE",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "NEPHROLOGY ASSOCIATES OF NORTHERN ILLINOIS",
        "enumeration_date": "2012-11-06",
        "last_updated": "2026-02-04",
        "certification_date": "2026-02-04",
        "status": "A",
        "authorized_official_last_name": "TANNA",
        "authorized_official_first_name": "MANISH",
        "authorized_official_middle_name": "M.",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "630-573-5000",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Nephrology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Oak Brook, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.