There is no simple answer to this question.  One reason is that the file may be lacking in medical proofs.  Many claims will not only need the requisite medical records to help prove a claim, but the claim may need expert opinions from treating physicians.  Another reasons is that SSA is concerned with people filing fraudulent claims.  If SSA is going to pay benefits on your claim, SSA will require that you prove your claim.  An experienced Disability Laweyr can help you do this.