Does anyone have an lo with a missing baby tooth?

Lo has all of his teeth except for his 2year molars and one lower incisor. He got the rest of his incisors about 6 months ago, all at once. I am starting to wonder if he just doesnt have one. My understanding is that if they dont have a baby tooth then the permanent one cant develop either.

Anyone have experience with this? Should i take him to a pediatric dentist? Is there anything they can do?