He is. The guy has published an absolutely preposterous number of books and has at least one out this year. They also did a Fear Street netflix series somewhat recently, last year I think.
Was that based on a more adult (but still young) reading level? The name sounds familiar and I grew up on RL Stine until I found the deluge of books set in the forgotten realms (Dungeons and Dragons setting, for clarity, not written by Stine)