Yemen’s al-Masirah TV said the casualties occurred on Monday as Saudi fighter jets carried out airstrikes on the health facility in the town of Abs in Hajjah province.
The report said ambulances rushed to the scene of the attack to help the injured.
Masirah said that medical staff, including doctors and nurses, as well as children were among those killed.
The Houthi Ansarullah movement, which rules the capital, Sana’a, condemned the attack, saying it was carried out in clear violation of a ceasefire agreement which has been holding across Yemen over the past four months.
Medical aid group Doctors Without Borders (MSF) confirmed on Twitter that “Abs hospital was targeted by air strikes today at 15:45 Yemen time (1245 GMT),” but said that the number of deaths and casualties still remain unknown.
MSF spokeswoman Malak Shaher told AFP the agency has had a team at the public hospital in the coastal town since 2015.
The Paris-based relief agency noted that medical teams were still attending the wounded.
The attack comes less than 48 hours after MSF said that Saudi airstrikes on a school in the northern province of Sa’ada killed 10 children.