I saw this guy on LinkedIn who is a trained dentist, medical doctor, and Ph.D. holder. I thought it was pretty impressive. I also noticed that his MD was from 2020-2021. I guess he was admitted with advanced standing based on his dental degree. Here's the details on his educational achievement: https://www.shaysharon.com/education-training
Before I click, I'm going to assume he is an oral maxillofacial surgeon. <clicks> Aha! I was right. In the US, a lot of these surgeons get a combined DDS/MD in their programs. The PhD though, that one is surprising. I noticed it was in Dentistry, I wonder if he was in a triple doctorate program. Edit: Actually, I was mistaken. Actually, you enter with a dentistry degree and then do a 6-year program leading to an MD and the completion of the surgical residency: Oral and Maxillofacial Surgery/MD Residency | College of Dental Medicine
An oral-maxillofacial surgeon typically firsts attain either a dental doctorate or a medical doctorate, then residency, and they may get the other doctorate in a shortened program generally integrated with residency, but not all do, if I'm not mistaken. There was a program at least as recently as 2019 where an entering medical student could take a dual DMD and DO degree at Nova Southeastern University. Just a handful of students pursued it. There also used to be a program where an entering medical student could take a dual DMD and MD degree at Case Western Reserve University, but they seemed to stop offering it earlier than 2019.
Education: BMedSc> MSc> DMD> PhD> MD all from Israel... Training seems interesting as well, he did his research fellowship and fellow here in the US, but his internship and residency previously was done in Israel...
It is normal for students to do a PhD while completing their MD. It normally involves doing a doctoral dissertation on top of one's medical studies. It's not common, but it's pretty normal.
Seems to me the basic science part, the first two years, of the MD is about the same as for the DDS? That would make things easier. Here in New Mexico, one of our outlying metro areas had a regional hospital whose Chief of Surgery was a DDS. That caused our Medical Board some heartburn. The guy was the goods, though. He did things like facial reconstruction and bone grafts. Hard to claim he wasn't doing "surgery".
Legally, there are three professionals we recognize as "physician and surgeon". These are MD/DO, DDS/DMD and DPM.