It's realistic, as a DO, to match at:
A top tier pyschiatry, family medicine, anesthesia, PM&R or pathology program.
A mid-tier internal medicine, neurology, pediatric, Ob/gyn or emergency medicine program
A mid to low tier general surgery or radiology program.
It's also realistic to match AOA orthopedics and general surgery, as well as emergency medicine, family medicine, pediatrics, internal medicine, psych and Ob/gyn.
It's unrealistic to match Acgme orthopedics, neurosurgery, urology, ENT, derm, radiation oncology and plastic surgery. Opthamology may or may not be unrealistic (not enough data to determine).
It's unrealistic to match aoa surgical subspecialities, except for aoa general surgery and orthopedics, because there are so few spots ( 14 neurosurgery, 24 ENT, 17 urology, and 15 opthamology). This is in contrast to the 135 general surgery spots and 100 orthopedic spots offered last year.
Similar there are few AOA anesthesia, radiology, and derm spots (about 30 for each speciality). However, acgme anesthesia is very DO friendly and acgme radiology is pretty DO friendly. AOA derm is weird because you don't apply as a 4th year, you apply as an intern, so I don't know how realistic aoa derm is.