- Oak Forest Health Center
- 15900 S. Cicero Ave., Building B-11, Oak Forest, IL, 60452
- Oakley Lindsay Center
- 300 Civic Center Plaza, Quincy, IL, 62301
- Oakley-Lindsay Center
- 300 Civic Center Plaza, Quincy, IL, 62301
- Oakwood Shores Community Center
- 3825 S. Vincennes Ave, Chicago, IL, 60653
- Open Door Clinic
- 1665 Larkin Ave., Elgin, IL, 60123
- Open Door Clinic
- 1665 Larkin Ave., Elgin, IL, 60123
- Open Door Health Center
- 1665 Larkin Ave., Elgin, IL, 60123
- Open Door Health Center
- 215 N. 4th St., DeKalb, IL, 60115
- Open Door Health Center
- 1665 Larkin Ave., Elgin, IL
- Open Door Health Center of Illinois
- 1665 Larkin Ave., Elgin, IL, 60123