Dr. Joel Eisenberg is Night Vale's only flying dinosaur expert. He was consulted when a group of pteranodons appeared through a portal and began attacking women who wore glasses. Unfortunately, he had still not recovered from his 2011 bout with throat spiders, and so was unable to grant any assistance.
- Episode 4 "PTA Meeting": He has not yet recovered from his bought with throat spiders.
- Bonus episode 1 "Minutes": He used to be the teacher for the Freshmen Seminar at Night Vale Community College, until his extended medical leave.
- Episode 130 "A Story About Us": He attempts to perform the Heimlich maneuver on Thomas Charles, to no avail.
- Episode 152 "The Great Golden Hand": As part of Applebee’s visiting experts program, Joel prepares a "fun dinosaur presentation".
- Episode 153 "The Heist, Part 1": He is a bank patron and is there during the robbery.
- Episode 154 "The Heist, Part 2": He is a bank patron and is there during the robbery. He offered the robbers his wallet, to which they were pleasantly surprised.
- Live show #8 "A Spy in the Desert"
- Episode 172 "Return of the Obelisk": At some point previous to this episode, he won second place in a chili cook-off judged by Susan Willman.
- Episode 176 "The Autumn Specter"
- Episode 184 "The Fog"
- Episode 192 "It Doesn't Hold Up"