Outpatient surgery centers in Williamson County, IL
3 outpatient surgery centers certified by Medicare.
An outpatient surgery center (ambulatory surgical center, ASC) does surgery and procedures that do not need a hospital stay: patients usually go home the same day. Common examples are cataract surgery, colonoscopy and other endoscopy, joint and hand surgery, and pain injections. The centers listed here are certified by Medicare. They are not emergency rooms.
By kind of surgery
Number of centers here certified by Medicare for each kind of surgery (one center can do several).
- Eye surgery (ophthalmology)1
- Endoscopy (for example colonoscopy)1
- Orthopedic surgery (bones and joints)2
- Pain management procedures2
- Foot surgery (podiatry)2
- Ear, nose and throat surgery1
- Gynecologic surgery (OB/GYN)1
- Other surgery1
All outpatient surgery centers in Williamson County
Herrin
- Southern Illinois Orthopedic LLC(618) 997‑6800Orthopedic surgery, Pain management procedures, Foot surgery · 3 operating rooms
Marion
- Marion Healthcare Surgery Center(618) 993‑1112Eye surgery, Endoscopy, Orthopedic surgery +4 more · 4 operating rooms
- Pain Care Surgery Center(618) 997‑7820Pain management procedures · 1 operating room
More care in Williamson County
Common questions
How many outpatient surgery centers are in Williamson County?
Medicare (CMS) lists 3 outpatient surgery centers in Williamson County, Illinois.
Which surgery centers in Williamson County do eye surgery such as cataract surgery?
1 of the 3 outpatient surgery centers are certified by Medicare for it: Marion Healthcare Surgery Center. Ask the center whether it does your specific procedure.
Which surgery centers in Williamson County do endoscopy such as colonoscopy?
1 of the 3 outpatient surgery centers are certified by Medicare for it: Marion Healthcare Surgery Center. Ask the center whether it does your specific procedure.
Which surgery centers in Williamson County do orthopedic (bone and joint) surgery?
2 of the 3 outpatient surgery centers are certified by Medicare for it: Marion Healthcare Surgery Center and Southern Illinois Orthopedic LLC. Ask the center whether it does your specific procedure.
Do surgery centers have Medicare star ratings?
No. Medicare does not rate outpatient surgery centers with stars. Each center’s page shows the official Medicare quality measures and patient survey results instead, next to the national values.
Source: Centers for Medicare & Medicaid Services (CMS), “Provider of Services File - Internet Quality Improvement and Evaluation System”, data updated 2026-10-16, retrieved 2026-11-11. In a medical emergency, call 911. About outpatient surgery centers and their quality measures