I did a bit of digging. He's doing alot of blogs/squidoo/etc. and some spammy things, like linking to his website with a bunch of keywords & zip codes from his personal G+ page:
Orthodontist Iowa City IA, (319) 471-4202, pediatric orthodontist, pediatric orthodontics, family orthodontist, family orthodontics, best orthodontist, interceptive orthodontic, interceptive orthodontist, emergency orthodontist, emergency orthodontics, invisalign dentist, teeth whitening, clear braces, orthodontic care for teens, dental implants, veneers, 52240, 52245, 52241, 52242, 52243, 52244, 52245, 52246, 52333, 52317, 52358, 52327, 52755, 52340, 52353, 52247, 52276
You can see the entire list of blogs/subscriptions/etc on his g+ page.
Lots of videos and citations. Just google his phone # or use NAP Hunter (chrome app) to find them all.
I don't have any more time to dig deeper, but this should give you a start! I classify citations as links. Or rather, citations, links, unstructured citations as "References" to a website. References gives a better picture of authority & reach IMO than # of links.
Hope this helps!