In this study, the surfaces of 316L stainless steel, which is frequently preferred in biomedical applications, were modified with silver nanoparticles (Ag NPs) to improve their antibacterial and anticorrosive properties. Firstly, Ag NPs were synthesized using a completely green a plant-mediated ultrasound-assisted synthesis method and characterized. Next, Ag NPs were coated onto the surface of the 316L with the airbrush spray technique. The coated surfaces were examined by SEM, surface roughness, profilometer, optical microscope, electrochemical corrosion, and disk diffusion analyses. The average surface roughness values of the surface modified samples were found to be moderately suitable for use in biomaterials while exhibiting corrosion resistance and antibacterial resistance. The Ag NPs coating offers significant potential for biomedical applications.