Head of household is a special status you can use if you have been separated from your spouse, you pay for more than half the costs of keeping your home, and you provide care in your home for a qualifying person who is usually your child dependent who lives with you more than half the year.
If you don't have a child dependent, or your child lives with you less than half the year, your only option is to file as Married Filing Separately.
When filing MFS, you should only need your spouse's name and SSN. You only need their income (I think) if you are claiming the health insurance subsidy. If you don't have the right information, you may need to file by mail and attach a written explanation.
