1. Home
  2. Directory
  3. Illinois
  4. Oak Brook
  5. Internal Medicine
  6. NPI Profile

NEPHROLOGY ASSOCIATES OF NORTHERN ILLINOIS, LTD.
NPI 1124069182
Internal Medicine - Nephrology in Oak Brook, IL

Active since June 09, 2006CLIA Certified · 2 labs
120 W 22ND ST STE 200, OAK BROOK, IL 60523(630) 575-5000 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Feb 4, 2026, Oct 6, 2025, Jun 18, 2025 and 3 more (6 updates tracked since 2021).

About Nephrology Associates Of Northern Illinois, Ltd. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NEPHROLOGY ASSOCIATES OF NORTHERN ILLINOIS, LTD. (NPI 1124069182) is a healthcare organization registered as a nephrology in Oak Brook, Illinois and active in the NPI registry since June 2006. The organization holds 2 active CLIA laboratory certificates, maintains 36 additional practice locations, and lists Manish Tanna, President, as its authorized official.

NPPES Registry Identity

NPI1124069182
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameNEPHROLOGY ASSOCIATES OF NORTHERN ILLINOIS, LTD.
Location Address120 W 22ND ST STE 200Oak Brook, IL 60523-1563
Mailing Address120 W 22nd StOak Brook, IL 60523-1563 · (630) 573-5000 · Fax (630) 368-0280
Phone(630) 575-5000
Organization SubpartNo
Authorized OfficialManish TannaPresident · (630) 573-5000
Enumeration DateJune 9, 2006
Last NPPES UpdateFebruary 4, 20266 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2026
✔ NPI 1124069182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
120 W 22ND ST STE 200, Oak Brook, IL 60523
Open in Google Maps ↗

Other Names 1

Other NameNani

Secondary Practice Locations 36

Location 12055 W Army Trail Rd Ste 110NAddison, IL 60101-1478 · Phone (773) 284-9247 · Fax (630) 773-2849
Location 21345 Ryan PkwyAlgonquin, IL 60102-4530 · Phone (847) 531-5911 · Fax (847) 531-5922
Location 3251 N Cass Ave Ste 100Westmont, IL 60559-1745 · Phone (630) 963-0309 · Fax (855) 223-1723
Location 42560 Hauser Ross Dr Ste 450Sycamore, IL 60178-3185 · Phone (815) 301-1001 · Fax (815) 301-1002
Location 51875 W Dempster St Ste 605Park Ridge, IL 60068-1168 · Phone (847) 439-8780 · Fax (847) 439-8940
Location 616605 107th StOrland Park, IL 60467-9016 · Phone (708) 226-9860 · Fax (708) 226-9864
Location 71890 Silver Cross Blvd Ste 415New Lenox, IL 60451-9575 · Phone (815) 717-8750 · Fax (815) 717-8751
Location 8601 W Golf Rd Ste 105Mount Prospect, IL 60056-4276 · Phone (847) 439-8780 · Fax (847) 439-8940
Location 91345 Edwards St Ste 3Morris, IL 60450-1692 · Phone (815) 905-2209 · Fax (815) 744-5428
Location 10675 W North Ave Ste 402Melrose Park, IL 60160-1624 · Phone (708) 450-4551 · Fax (708) 681-9711
Location 11910 Greenlee St Unit BMarengo, IL 60152-8200 · Phone (815) 301-1001 · Fax (815) 301-1002
Location 1228160 W Northwest Hwy Ste 105Lake Barrington, IL 60010-2332 · Phone (815) 301-1001 · Fax (815) 301-1002
Location 133100 Theodore St Ste 201Joliet, IL 60435-0605 · Phone (815) 905-2209 · Fax (815) 744-5428
Location 1410370 Haligus Rd Ste 103Huntley, IL 60142-9582 · Phone (847) 531-5911 · Fax (847) 531-5922
Location 151555 N Barrington Rd Ste 3400Hoffman Estates, IL 60169-1023 · Phone (847) 952-9332 · Fax (847) 952-9338
Location 161425 N Hunt Club Rd Ste 301Gurnee, IL 60031-2639 · Phone (847) 855-9152 · Fax (847) 855-5215
Location 171475 E Belvidere Rd Ste 317Grayslake, IL 60030-2016 · Phone (847) 855-9152 · Fax (847) 855-5215
Location 189125 S Pulaski RdEvergreen Park, IL 60805-1441 · Phone (708) 422-7715 · Fax (708) 422-7816
Location 192850 W 95th St Ste 300Evergreen Park, IL 60805-2741 · Phone (773) 735-4884 · Fax (773) 735-2625
Location 20800 Biesterfield Rd Bldg Ste 101Elk Grove Village, IL 60007-3361 · Phone (847) 427-7100 · Fax (847) 981-6050
Location 2112250 S Cicero Ave Ste 112Alsip, IL 60803-2946 · Phone (708) 371-5308 · Fax (708) 371-5964
Location 226948 W Windsor AveBerwyn, IL 60402-3335 · Phone (708) 749-4617 · Fax (708) 749-0094
Location 2315 S McHenry Rd Fl 2Buffalo Grove, IL 60089-6705 · Phone (847) 439-8780 · Fax (847) 439-8940
Location 246307 S Stewart Ave Ste 210Chicago, IL 60621-3116 · Phone (773) 483-2200 · Fax (773) 483-2201
Location 252222 W Division St Ste 260Chicago, IL 60622-2990 · Phone (708) 252-5809 · Fax (630) 701-7521
Location 261625 E 75th St Ste 328Chicago, IL 60649-3603 · Phone (773) 947-7841 · Fax (773) 493-1430
Location 272740 W Foster Ave Ste 405Chicago, IL 60625-3532 · Phone (872) 208-7619 · Fax (773) 506-6640
Location 28104 S Ashland AveChicago, IL 60607-2402 · Phone (312) 850-8434 · Fax (312) 766-4603
Location 292701 W 68th StChicago, IL 60629-1813 · Phone (773) 735-4884 · Fax (773) 735-2625
Location 306438 Joliet Rd Ste 203Countryside, IL 60525-4624 · Phone (708) 352-5222 · Fax (866) 353-5699
Location 3113755 Cicero AveCrestwood, IL 60418-1824 · Phone (708) 388-0499 · Fax (708) 388-0283
Location 32390 E Congress Pkwy Ste CCrystal Lake, IL 60014-6202 · Phone (815) 301-1001 · Fax (815) 301-1002
Location 33412 63rd St Ste 100Downers Grove, IL 60516-2000 · Phone (331) 775-2783 · Fax (866) 399-1492
Location 341600 N Randall Rd Ste 135Elgin, IL 60123-7810 · Phone (847) 531-5911 · Fax (847) 531-5922
Location 35901 Biesterfield Rd Ste 310Elk Grove Village, IL 60007-7324 · Phone (847) 952-9332 · Fax (847) 952-9338
Location 36800 Biesterfield Rd Ste G01Elk Grove Village, IL 60007-3372 · Phone (847) 981-3680 · Fax (847) 956-5122

Other Identifiers 2

OtherC30486IL · Rr-group Cook
Other1616108IL · Blue Cross Blue Shield

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

CLIA Laboratory Certificates CMS CLIA 3

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D1005883

Nephrology Associates · Melrose Park, IL
Active · expires Oct 31, 2026
CLIA Number14D1005883
Laboratory TypePhysician Office
Certificate Effective DateNovember 1, 2024
Certificate Expiration DateOctober 31, 2026
Laboratory DirectorGeorge Naratadam
Laboratory Phone(708) 450-4551
Laboratory LocationNephrology Associates675 W North Ave, Ste 402, Melrose Park, IL 60160
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 14D2040816

Nephrology Associates Of Nothern Illinois, Ltd · Huntley, IL
Active · expires May 9, 2028
CLIA Number14D2040816
Laboratory TypePhysician Office
Certificate Effective DateMay 10, 2026
Certificate Expiration DateMay 9, 2028
Laboratory DirectorUmesh Patel
Laboratory Phone(847) 531-5911
Laboratory LocationNephrology Associates Of Nothern Illinois, Ltd10370 Haligus Rd #103, Huntley, IL 60142
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 14D2082203

Nephrology Associates Of Northern Il, Ltd · Gurnee, IL
Expired · Aug 7, 2026
CLIA Number14D2082203
Laboratory TypePhysician Office
Certificate Effective DateAugust 8, 2024
Certificate Expiration DateAugust 7, 2026
Laboratory DirectorOmaima Degani
Laboratory Phone(847) 855-9152
Laboratory LocationNephrology Associates Of Northern Il, Ltd1425 N Hunt Club Rd - Ste 301, Gurnee, IL 60031
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nephrology Associates Of Northern Illinois, Ltd.'s NPI number?

The NPI number for Nephrology Associates Of Northern Illinois, Ltd. is 1124069182. It was assigned to this organization in the NPPES registry on June 9, 2006. The provider is also known as Nani.

Where is Nephrology Associates Of Northern Illinois, Ltd. located?

Nephrology Associates Of Northern Illinois, Ltd. is located at 120 W 22nd St Ste 200, Oak Brook, IL 60523. The listed phone number is (630) 575-5000.

What is Nephrology Associates Of Northern Illinois, Ltd.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Does Nephrology Associates Of Northern Illinois, Ltd. hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Nephrology Associates Of Northern Illinois, Ltd. accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Nephrology Associates Of Northern Illinois, Ltd. as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nephrology Associates Of Northern Illinois, Ltd. was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.