The deadline to file the Department of Health (DOH) in 2023 may vary depending on the specific jurisdiction or country you are referring to. Since you did not provide a specific location, it is not possible to give an accurate answer. In general, however, if you are referring to tax-related documents, the filing deadline for taxes is typically determined by the tax authorities and often falls on a specific date each year, such as April 15th in the United States. It is recommended to check with your local jurisdiction's tax authority or consult a professional tax advisor for the specific deadline in your area.