Medium Options
I could create a sticky post at the beginning of your blog that shows this. It would automatically update every time you made a new post on Medium. Once people clicked on it, it would take them to your Medium site (so they wouldn’t actually be reading the post on your website):
Or, you could copy and paste a code from Medium into a new wordpress post every time you create a new post on medium. It’s a little more work, but they actually make it pretty simple. There’s a button you click to copy a line of embed code. You just create a new WordPress post and hit paste. Once again, they would click on the article and wouldn’t be taken to your Medium site (wouldn’t be reading on your wordpress site). But you’d still have your archive that showed when the post was posted, etc, this way. It would look like this: