Sub-Center Koyu (Notional)
| Hospital Name | Sub-Center Koyu (Notional) |
| Address | N. A. |
| Phone No. | N. A. |
| Mobile No. | N. A. |
| Facility | SubCentre |
| State | Arunachal Pradesh |
| District | East Siang |
| Taluka | Koyu Circle |
| Block | HB Koyu |
| GPS Location | Latitude: N. A. |
| Longitude: N. A. |
Sub-Center Koyu (Notional) hospital is a SubCentre in HB Koyu. It is located in East Siang district of Arunachal Pradesh state.