Google Maps already allows you to add pictures of the outside of your office building as well as other information that is great to provide to potential patients and is free of charge. If you haven't already updated your local listing, we suggest you do that before any other SEO.
Google just released that starting next week they will allow "Business Photos" which allows any business to invite a Google photographer onsite to take photos of the interior of the office. It will be interesting to see how this turns out, but I think it will be a great add on to the already helpful local listing. If you need help setting that up give us a call.