Want the truth?? I'm shocked that you didn't receive more interviews. I mean, okay, brutally honest, your GPA is slightly low and that 16 may stand out on your DAT, but who cares about reading when you have those science scores?
Moving forward, I would improve my Personal Statement, GPA, and maybe find a way to make yourself UNIQUE. Idk what your extracurriculars are? Do some charity work. I don't mean cancer walks, everyone can do that. Go volunteer time at a veterans home, go do some habitat for humanity, go to a community health clinic and volunteer in the dental clinic (super fun, honestly).
I'm wondering if there's some underlying reason I'm not seeing as to why they didn't call you? Very strong DAT, not a terrible GPA, Math major (cool for the diversity they look for)... I don't know what's missing.
I would start there! I would also consider emailing the dean of admissions from the school you interviewed at and see what he/she thinks you could improve.
Let me know if I can help in any way! You're very close.
Best of Luck,
Gage