"Night Court" star John Larroquette was involved in a brutal car accident that severely injured a reality TV star, who claims he can't get no satisfaction ... from John or his insurance company.
The alleged victim is Joe Meinwieser -- a tattoo artist on Oxygen's "Tattoos After Dark" -- and his list of injuries are horrific: broken ribs, fractured spine, fractured hand, and loss of half his kidney.
Meinwieser claims Larroquette made an illegal turn out of a Venice, CA parking lot in December -- smashing into him and his motorcycle.
Police investigated, and law enforcement sources tell us it's unlikely JL will face criminal charges.
That's not sitting well with Joe -- who claims Larroquette promised to cover his medical expenses ... but the actor's insurance company won't pay up. He says he can't work, and his unpaid medical bills are mounting.
Unclear if Larroquette is aware of Meinwieser's situation. We've made multiple attempts to contact him, but his people aren't responding. Joe says his next move will be a lawsuit.