Yes, but usually only his social security number. If the family had a Marketplace health insurance plan and received a subsidy, you might need some income information.
Note regarding filing status. While it is true that filing jointly is allowed (if you agree) and often results in lower taxes, what the others did not mention is that when you sign a joint return, both spouses are equally and jointly liable for all income and claims, and if there is an error, deficiency, or omission, the IRS can come after either spouse, or both, or whoever has the most money to seize, even if it is not that person's fault. Filing separately may be the better option when you are in the process of separating and divorcing.
