| NORTHSIDE RADIOLOGY SERVICES SC | Business | 042003505 | CHICAGO | NOT RENEWED | Verify |
| NORTHSIDE SUBURBAN PEDIATRIC ASSOCIATES SC | Business | 042000071 | CHICAGO | NOT RENEWED | Verify |
| NORTHSIDE WELLNESS CENTER LTD | Business | 042621352 | CHICAGO | ACTIVE | Verify |
| NORTHSIDE WELLNESS CENTER LTD. | Business | 042621044 | CHICAGO | NOT RENEWED | Verify |
| NORTHSTAR INTEGRATED HEALTH | Business | 042620076 | LISLE | ACTIVE | Verify |
| NORTHSUBURBAN NEUROCARE SC | Business | 042001827 | DES PLAINES | CLOSED | Verify |
| NORTHTOWN ANESTHESIOLOGISTS S C | Business | 042000747 | OAK PARK | NOT RENEWED | Verify |
| NORTHVIEW CHIROPRACTIC CENTER | Business | 042617522 | GLENVIEW | NOT RENEWED | Verify |
| NORTHVIEW PEDIATRICS | Business | 042007440 | GLENVIEW | NOT RENEWED | Verify |
| NORTHWEST ADULT MEDICINE SC | Business | 042617528 | ITASCA | NOT RENEWED | Verify |
| NORTHWEST ANESTHESIOLOGISTS SC | Business | 042001818 | OAK LAWN | NOT RENEWED | Verify |
| NORTHWEST BONE AND JOINT SURGEONS LTD | Business | 042003369 | HOFFMAN ESTATES | NOT RENEWED | Verify |
| NORTHWEST CARDIO-VASCULAR ASSOCIATES SC | Business | 042007577 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST CARDIOLOGY ASSOCIATES SC | Business | 042619616 | BARRINGTON | NOT RENEWED | Verify |
| NORTHWEST CARDIOLOGY ASSOCIATES SC | Business | 042620159 | MCHENRY | NOT RENEWED | Verify |
| NORTHWEST CHICAGO PRIMARY CARE, S.C. | Business | 042621045 | ELMWOOD PARK | ACTIVE | Verify |
| NORTHWEST CHIROPRACTIC CLINIC SC | Business | 042007195 | ITASCA | NOT RENEWED | Verify |
| NORTHWEST CLINIC SERVICE CORP | Business | 042000229 | WOODSTOCK | NOT RENEWED | Verify |
| NORTHWEST COMMUNITY CHIRO & WELLNESS CTR SC | Business | 042618104 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST DERMATOLOGY SC | Business | 042006381 | HOFFMAN ESTATES | NOT RENEWED | Verify |
| NORTHWEST EMERGENCY MEDICAL SERVICES LTD | Business | 042004270 | CHICAGO | NOT RENEWED | Verify |
| NORTHWEST ENT ASSOCIATES SC | Business | 042617204 | CHICAGO | NOT RENEWED | Verify |
| NORTHWEST ENT SC | Business | 042002001 | ARLINGTON HTS | NOT RENEWED | Verify |
| NORTHWEST EYE CENTER S.C. | Business | 042621416 | BARRINGTON | ACTIVE | Verify |
| NORTHWEST EYE CENTER S.C. | Business | 042621418 | CRYSTAL LAKE | ACTIVE | Verify |
| NORTHWEST EYE CENTER S.C. | Business | 042621419 | ELGIN | ACTIVE | Verify |
| NORTHWEST FAMILY PRACTICE | Business | 042618310 | GRAYSLAKE | CLOSED | Verify |
| NORTHWEST GASTROENTEROLOGISTS SC | Business | 042003836 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST GYNECOLOGICAL/OBSTETERICS CTR SC | Business | 042005763 | HOFFMAN ESTATES | NOT RENEWED | Verify |
| NORTHWEST HEALTH CENTER LTD | Business | 042620442 | ARLINGTON HEIGHTS | ACTIVE | Verify |
| NORTHWEST HEALTH INSTITUTE SC | Business | 042620007 | NORTHBROOK | ACTIVE | Verify |
| NORTHWEST HEART SPECIALISTS SC | Business | 042007468 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST ILL MANAGEMENT SERVICES INC | Business | 042000915 | FREEPORT | NOT RENEWED | Verify |
| NORTHWEST INFECTIOUS DISEASE CONSULTANTS SC | Business | 042617264 | NILES | NOT RENEWED | Verify |
| NORTHWEST INTERNAL | Business | 042000086 | DES PLAINES | NOT RENEWED | Verify |
| NORTHWEST INTERNAL MEDICINE SC | Business | 042000660 | SCHAUMBURG | NOT RENEWED | Verify |
| NORTHWEST KIDNEY CONSULTANTS SC | Business | 042619297 | ELGIN | NOT RENEWED | Verify |
| NORTHWEST MEDICAL ASSOCIATES SC | Business | 042006743 | CHICAGO HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST MEDICAL ASSOCS INC | Business | 042005631 | WOOD DALE | NOT RENEWED | Verify |
| NORTHWEST MEDICAL CLINIC LTD | Business | 042000054 | CHICAGO | NOT RENEWED | Verify |
| NORTHWEST MEDICAL CLINIC SC | Business | 042617076 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| NORTHWEST MEDICAL GROUP SC | Business | 042617824 | PARK RIDGE | NOT RENEWED | Verify |
| NORTHWEST MEDICAL SERVICES LTD | Business | 042007211 | CHICAGO | NOT RENEWED | Verify |
| NORTHWEST METROPOLITAN UROLOGY ASSOCS SC | Business | 042007473 | NILES | NOT RENEWED | Verify |
| NORTHWEST NEUROLOGICAL AND | Business | 042006467 | HOFFMAN ESTATES | NOT RENEWED | Verify |
| NORTHWEST NEUROLOGY LTD | Business | 042619716 | ROLLING MEADOWS | ACTIVE | Verify |
| NORTHWEST NEUROLOGY LTD | Business | 042621223 | ELGIN | ACTIVE | Verify |
| NORTHWEST NEUROLOGY LTD | Business | 042619201 | LAKE BARRINGTON | ACTIVE | Verify |
| NORTHWEST NEUROLOGY LTD | Business | 042005757 | SOUTH BARRINGTON | ACTIVE | Verify |
| NORTHWEST NEUROLOGY, LTD | Business | 042620856 | ELK GROVE VILLAGE | ACTIVE | Verify |