The Sigma Insurance HMO is affiliated with the following health facilities.
Anderson Hospital
Chibok, Borno
Ankunding Hospital
Gwadabawa, Sokoto
Bayer Hospital
Okigwe, Imo
Bayer Hospital
Ikeja, Lagos
Breitenberg Hospital
Onitsha, Anambra
Daugherty Hospital
Nasarawa, Nasarawa
Hand Hospital
Ikot Ekpene, Akwa-Ibom
Hettinger Hospital
Karu, Nasarawa
Hills Hospital
Okpogho, Enugu
Hoeger Hospital
Offa, Kwara