The only thing i want to say is put the 3 headlines (Patients&visitors, medical professionals and healthcare services) in line wit the other 3 columns. The first one isn't in line with the rest. The second and the third are just done right.
Further it look's nice and very clean. Maybe you should change the color of the blocks over the headerphoto. Maybe white with the blue color of the website. Now the black part don't fit in the website.
Good job, just fix the few things in my opinion and you have a nice and healthy site!