I present you a ready-made 3D door project that can be suitable not only for hospitals, but also for offices. 3D-assets which made in Blender and Texturing in Substance Painter. The asset contains 4 types of different doors, which consist of polygons:
PS: If you suddenly have any questions or bugs of the model (or Texture), then do not hesitate and write so that I can provide you with the best quality!