No, it is not sufficient, unfortunately. You must have form 1095-A. In fact, form 1095-A is more important than form 1095-B. Form 1095-B is only a receipt confirmation that you had insurance through the employer and is not even entered on your tax return. All you have to do is indicate that you had insurance for the months that show on form 1095-B.
Form 1095-A is the one that calculates how much insurance premiums you paid, how much government paid and, based on your income if have to pay some of it back or receive a Premium Tax Credit.
I recommend that you contact 1095-A issuer and request a copy or log into your account and see if you can print it there...Otherwise, your return will not be complete and accurate and you may receive a letter from the IRS in the summer asking to correct it.
