The Sigma Insurance HMO is affiliated with the following health facilities.
Ankunding Hospital
Jama'are, Bauchi
Bartoletti Hospital
Mangu, Plateau
Beahan Hospital
Kaura Namoda, Zamfara
Beier Hospital
Otukpo, Benue
Bergnaum Hospital
Oyo, Oyo
Brown Hospital
Shuwa, Adamawa
Christiansen Hospital
Koko, Delta
Dibbert Hospital
Auchi, Edo
Effertz Hospital
Funtua, Katsina
Eichmann Hospital
Nasarawa, Nasarawa