| CHICAGO ACCIDENT & INJURY CLINIC, LTD. | Business | 042621325 | DOWNERS GROVE | NOT RENEWED | Verify |
| CHICAGO ANESTHESIA ASSOCIATES LTD | Business | 042000078 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO ANESTHESIA ASSOCIATES SC | Business | 042619197 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO ASSOCIATES | Business | 042000556 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO CARDIAC SURGEONS SC | Business | 042007800 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| CHICAGO CARDIO-THORACIC & VASCULAR SURGERY ASS SC | Business | 042616786 | ELK GROVE VILLAGE | CANCELLED | Verify |
| CHICAGO CARDIOLOGY INSTITUTE SC | Business | 042619471 | SCHAUMBURG | ACTIVE | Verify |
| CHICAGO CARDIOVASCULAR ASSOCIATES SC | Business | 042007381 | GLENVIEW | NOT RENEWED | Verify |
| CHICAGO CARDIOVASCULAR INSTITUTE LTD | Business | 042007612 | CHICAGO RIDGE | NOT RENEWED | Verify |
| CHICAGO CENTER FOR FACIAL PLASTIC SURGERY SC | Business | 042616950 | CHICAGO | ACTIVE | Verify |
| CHICAGO CENTER FOR WOMEN'S HEALTH SC | Business | 042620376 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO CENTER FOR WOMEN'S HEALTH SC | Business | 042620384 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO CENTER FOR WOMEN'S HEALTH SC | Business | 042620383 | OAK LAWN | NOT RENEWED | Verify |
| CHICAGO CENTER FOR WOMEN'S HEALTH SC | Business | 042620161 | BEDFORD PARK | NOT RENEWED | Verify |
| CHICAGO CHATHAM MEDICAL ASSOCS SC | Business | 042006005 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO CHIROPRACTIC AND PHYSICAL MEDICINE S.C. | Business | 042621015 | CHICAGO | ACTIVE | Verify |
| CHICAGO CHIROPRACTIC GROUP LTD | Business | 042619923 | WEST DUNDEE | ACTIVE | Verify |
| CHICAGO CHIROPRACTIC GROUP SC | Business | 042618220 | CARPENTERSVILLE | NOT RENEWED | Verify |
| CHICAGO COMMUNITY MEDICAL CTR SC | Business | 042002098 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO CORNEA CONSULTANTS LTD | Business | 042006466 | HIGHLAND PARK | ACTIVE | Verify |
| CHICAGO COSMETIC SURGERY & DERMATOLOGY SC | Business | 042618358 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO DEPRESSION AND ANXIETY SPECIALISTS SC | Business | 042619464 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO DERMATOLOGY AND COSMETIC CENTER - LINCOLN | Business | 042620575 | DARIEN | NOT RENEWED | Verify |
| CHICAGO DERMATOLOGY AND COSMETIC CENTER LTD | Business | 042620574 | DARIEN | NOT RENEWED | Verify |
| CHICAGO DERMETOLOGY & AESTHETICS SC | Business | 042619324 | WINNETKA | NOT RENEWED | Verify |
| CHICAGO DIABETES EXPERTS SC | Business | 042620304 | LAKE FOREST | NOT RENEWED | Verify |
| CHICAGO DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY, LTD. | Business | 042621428 | CHICAGO | ACTIVE | Verify |
| CHICAGO EMERGENCY PHYSICIANS ASSOCS LTD | Business | 042006137 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO ENDOMETRIOSIS & ENDOSCOPY CTR LTD | Business | 042617352 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO FAMILY ASTHMA & ALLERGY SC | Business | 042619435 | CHICAGO | ACTIVE | Verify |
| CHICAGO FUNCTIONAL NEUROLOGY GROUP LTC | Business | 042620862 | CHICAGO | ACTIVE | Verify |
| CHICAGO GYNECOLOGIC ONCOLOGY SC | Business | 042005463 | PALATINE | NOT RENEWED | Verify |
| CHICAGO GYNECOLOGICAL ASSOCIATES SC | Business | 042002047 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO HAIR INSTITUTE LTD | Business | 042008044 | HINSDALE | NOT RENEWED | Verify |
| CHICAGO HAND AND ORTHOPEDIC SURGERY CENTERS SC | Business | 042620259 | OAKBROOK TERRACE | ACTIVE | Verify |
| CHICAGO HAND AND ORTHOPEDIC SURGERY CENTERS SC | Business | 042620260 | SCHAUMBURG | ACTIVE | Verify |
| CHICAGO HAND AND ORTHOPEDIC SURGERY CENTERS SC | Business | 042620262 | LIBERTYVILLE | NOT RENEWED | Verify |
| CHICAGO HEALTH AND PHYSICAL | Business | 042618903 | CHICAGO | ACTIVE | Verify |
| CHICAGO HEALTHCARE CENTERS SC | Business | 042619032 | PALATINE | NOT RENEWED | Verify |
| CHICAGO HEALTHWORKS, S.C. | Business | 042616957 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO HEART & LUNG | Business | 042006166 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO HEART & VASCULAR SPECIALISTS, S.C. | Business | 042617885 | CHICAGO | ACTIVE | Verify |
| CHICAGO HEART AND VASCULAR CONSULTANTS LTD | Business | 042618481 | OLYMPIA FIELDS | NOT RENEWED | Verify |
| CHICAGO HEART CHECK LTD | Business | 042002060 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO HEART INSTITUTE SC | Business | 042618600 | NORTHBROOK | ACTIVE | Verify |
| CHICAGO HEIGHTS ANESTHESIA | Business | 042000069 | CHICAGO HEIGHTS | NOT RENEWED | Verify |
| CHICAGO HEIGHTS CLINIC LTD | Business | 042000265 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO HEIGHTS MEDICAL CONSULTANTS SC | Business | 042004035 | CHICAGO HEIGHTS | NOT RENEWED | Verify |
| CHICAGO HEMATOLOGY ONCOLOGY ASSOCIATES LTD | Business | 042621004 | ORLAND PARK | NOT RENEWED | Verify |
| CHICAGO IMAGING LTD | Business | 042006891 | NORTHBROOK | NOT RENEWED | Verify |