Meds for narcolepsy: This is the specialty that is supposed to do this and gets bulk, but isn't exactly a common condition, so rarely is this done.
Meds for insomnia. Some simply don't prescribe meds for this but hammer on CBTi. There are a handful of (older) docs who shell out the Zs.
Meds for RLS. Usually PCPs are treating, but a small percentage of sleep practice. PCPs may even take over.
Meds for OSA. Rare. The sleep docs I've been around, basically don't or if they do, they have like 5 or less or some rediculous low number of these pts.
Meds for RBD. So few patients. Benzo meds can also be easily assumed by PCPs or psych.
Meds for various parasomnias. Rare.
In grand summary rarely are meds prescribed in this specialty, but even with so few Narcolepsy patients the nuances of needing them on a monthly basis requires some effort to complete this task.