Koolaiyar Sub-Center
| Hospital Name | Koolaiyar Sub-Center |
| Address | Rented Building |
| Address Line2 | Tsunami Nagar, Lake |
| Location | Koolaiyar |
| Phone No. | N. A. |
| Mobile No. | N. A. |
| Facility | SubCentre |
| State | Tamil Nadu |
| District | Nagapattinam |
| Taluka | Sirkali |
| Block | Kollidam |
| GPS Location | Latitude: 11.2901 |
| Longitude: 79.8279 |
Koolaiyar Sub-Center hospital is a SubCentre in Kollidam. It is located in Nagapattinam district of Tamilnadu state. The GPS Location of this hospital is shown in the map below.