Nababan, L., Nasution, M.F., Triwanda, E., Ginting, E. and Sinambela, L. 2026. Artificial Intelligence Based Expert System for Medical Services at Clinic Pratama Bertha Medan. Yumary: Jurnal Pengabdian kepada Masyarakat . 6, 4 (Jun. 2026), 185–196. DOI:https://doi.org/10.35912/yumary.v6i4.6530.