| Business | Phone |
| Health One 1550 N Northwest Hwy 401, Park Ridge 60068 | (847) 759-1560 |
| Medical Billing Svc 2 W Talcott Rd 5, Park Ridge 60068 | (847) 685-9326 |
| Sabella & Graham 776 Busse Hwy, Park Ridge 60068 | (847) 696-1611 |
| Ultimate Billing Svc 500 N Lincoln Ave, Park Ridge 60068 | (847) 692-6218 |