No doubt you have some posts that have served your medical practice blog well in terms of repeat traffic. These are usually relevant, "evergreen" posts of high-quality content that have successfully connected you with readers who, down the line, may end up becoming—or have already become—new patients.
In the world of content marketing, there is no such thing as "one and done." You can—and should—get as much mileage out of your best content. In most cases, the majority of the legwork has been done during the process of writing the post. It doesn't take much more to spiff it up and resend it out into the world.