| CHICAGO INST OF NEUROSURGERY & | Business | 042005619 | CHICAGO | CLOSED | Verify |
| CHICAGO INSTITUTE OF MINIMALLY INVASIVE | Business | 042618952 | SKOKIE | NOT RENEWED | Verify |
| CHICAGO INSTITUTE OF NATURAL HEALTH SC | Business | 042620231 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO INTERVENTIONAL PAIN MEDICINE SC | Business | 042618575 | BARTLETT | ACTIVE | Verify |
| CHICAGO IV F AND FERTILITY INST SC | Business | 042006517 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO IVF LTD | Business | 042618921 | SKOKIE | NOT RENEWED | Verify |
| CHICAGO KIDNEY CENTERS SC | Business | 042001897 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO LAKE SHORE MEDICAL ASSOCIATES LTD | Business | 042619952 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO MATERNAL FETAL MEDICINE SC | Business | 042617876 | CHICAGO | ACTIVE | Verify |
| CHICAGO MEDICAL & PAIN ASSOCIATES LTD | Business | 042618868 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO MEDICAL ASSOCIATES SC | Business | 042617578 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO MEDICAL ASSOCIATES SC | Business | 042007272 | OAK PARK | NOT RENEWED | Verify |
| CHICAGO MEDICAL HEALTHCARE GROUP, S.C. | Business | 042620825 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO MEDICAL SERVICES SC | Business | 042000128 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO NASAL AND SINUS CENTER SC | Business | 042617952 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO NEPHROLOGY ASSOCIATES SC | Business | 042617739 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO NEUROLOGICAL | Business | 042002320 | KENILWORTH | CLOSED | Verify |
| CHICAGO NEUROLOGY GROUP SC | Business | 042617888 | GLENVIEW | NOT RENEWED | Verify |
| CHICAGO NEUROPATHOLOGY SERVICES SC | Business | 042616965 | HIGHLAND PARK | NOT RENEWED | Verify |
| CHICAGO NEUROSCIENCE INSTITUTE LTD | Business | 042617931 | ELGIN | ACTIVE | Verify |
| CHICAGO NEUROVASCULAR THERMOGRAPHIC | Business | 042005825 | DES PLAINES | NOT RENEWED | Verify |
| CHICAGO OB GYN ULTRASOUND SC | Business | 042620064 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO OCULOFACIAL PLASTIC SURGERY | Business | 042621052 | CHICAGO | ACTIVE | Verify |
| CHICAGO ORTHOPAEDICS & SPORTS MED SC | Business | 042000256 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO ORTHOPEDIC ASSOC SC | Business | 042002620 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO OTOLARYNGOLOGY ASSOCS SC | Business | 042007499 | SKOKIE | NOT RENEWED | Verify |
| CHICAGO OTOLARYNGOLOGY HEAD | Business | 042006862 | CHICAGO | CLOSED | Verify |
| CHICAGO OTOLOGY GROUP LTD | Business | 042005039 | HINSDALE | NOT RENEWED | Verify |
| CHICAGO PAIN AND WELLNESS INSTITUTE SC | Business | 042620518 | LOMBARD | ACTIVE | Verify |
| CHICAGO PAIN ANESTHESIA SC | Business | 042620519 | LOMBARD | ACTIVE | Verify |
| CHICAGO PAIN CENTER LTD | Business | 042620854 | CHICAGO | ACTIVE | Verify |
| CHICAGO PAIN CENTER LTD | Business | 042617875 | CHICAGO | ACTIVE | Verify |
| CHICAGO PAIN INSTITUTE SC | Business | 042620521 | LOMBARD | ACTIVE | Verify |
| CHICAGO PAIN MANAGEMENT CONSULTANTS LTD | Business | 042617210 | NORTH RIVERSIDE | NOT RENEWED | Verify |
| CHICAGO PEDIATRIC CLINIC I SERVICE CORPORATION | Business | 042619290 | CHICAGO | CLOSED | Verify |
| CHICAGO PEDIATRIC CLINIC SERVICE CORP | Business | 042619354 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO PRIMARY CARE | Business | 042007535 | WHEATON | NOT RENEWED | Verify |
| CHICAGO PSYCHIATRY LTD | Business | 042004435 | CHICAGO | CANCELLED | Verify |
| CHICAGO PULMONARY & SLEEP DISORDERS INSTITUTE LTD | Business | 042620236 | LOMBARD | ACTIVE | Verify |
| CHICAGO RADIATION ONCOLOGY SC | Business | 042006728 | GLENCOE | NOT RENEWED | Verify |
| CHICAGO REHABILITATION CENTER LTD | Business | 042008101 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO SOUTH ORTHOPEDIC 2 SC | Business | 042618038 | OAK LAWN | NOT RENEWED | Verify |
| CHICAGO SPINE AND JOINT, SC | Business | 042007966 | NEW LENOX | ACTIVE | Verify |
| CHICAGO SPINE AND JOINT, SC | Business | 042620601 | MORRIS | ACTIVE | Verify |
| CHICAGO SPINE AND JOINT, SC | Business | 042621351 | HINSDALE | ACTIVE | Verify |
| CHICAGO SPINE AND JOINT, SC | Business | 042621390 | ORLAND PARK | ACTIVE | Verify |
| CHICAGO SPORTS & CHIROPRACTIC MEDICINE SC | Business | 042618469 | CHICAGO | ACTIVE | Verify |
| CHICAGO SURGICAL CLINIC LTD | Business | 042619205 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| CHICAGO TRAUMA CONSULTANTS SC | Business | 042006465 | CHICAGO | NOT RENEWED | Verify |
| CHICAGO UPTOWN MEDICAL CTR SC | Business | 042619559 | CHICAGO | NOT RENEWED | Verify |