Medics will go unpaid and services will suffer, the health directorates said, due to the suspension of the donor funding they receive.
Medical facilities are being rehabilitated and services are being restored in Iraq's westernmost province following the ouster of ISIS.
Mosul steps up efforts to remove the remains of the group's dead fighters from under the rubble.
The extremist alliance raided the Idlib Free Health Directorate building in Kafr Nabl and detained a number of doctors, a local activist said.
Most hospitals in Idlib are in danger of shutting down or limiting the services they provide as international support is suspended.
Doctors and paramedics have been forced to operate out of basements and shelters as most of the enclave's medical facilities have been hit.
Thousands of civilians who suffered severe injuries or disabilities at the hands of ISIS are now receiving local government support.
The corpses of dozens of ISIS fighters remain exposed on the streets, hindering the efforts of residents to return and resume normal life.
Jalawla General Hospital has been restored to service after undergoing extensive renovations to repair heavy damage caused by ISIS.
A bout of food poisoning swept through Hassan Sham and al-Khazer camps outside Mosul, with the outbreak thought to be linked to an iftar meal.
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With Tahrir al-Sham dominating Idlib, I am most alarmed that:
The Lebanese militia has encouraged the families of fighters slain in Syria to keep quiet about their deaths, a source close to the group reveals.