Yes, it is, been going there for decades. We don't go to US dentists. The last US dentist that we went to, an endodontist, did shoddy work, then wouldn't stand behind it. Our dentist is in Algodones, even for twice yearly clean and checks. Both DW and I have had major dental work done there, at a fraction of the cost in the US, and the work was quality. Our Mexico dentist's equipment was more up to date than the dentist we used to go to in the US. We also sometimes pick up some meds there at a pharmacy.
Sometimes we park on the US side and walk in, and sometimes we drive in, as our dentist has covered parking.