The documentary you are thinking of is indeed "Pandemic: How to Prevent an Outbreak" on Netflix, and the doctor you are remembering is Dr. Holly Goracke.
Dr. Goracke was featured in the docuseries as the sole physician at Jefferson County Hospital in rural Oklahoma.[1][2] Her storyline highlighted the immense pressure and challenges faced by healthcare professionals in under-resourced rural areas.[1][2] The series showed her working exhausting 72-hour shifts and grappling with the potential of a widespread pandemic hitting her small community.[1]
As you recalled, the immense stress of her demanding job ultimately led her to leave her position at the hospital to prioritize time with her family.[3]
While the series also featured other prominent medical figures like Dr. Syra Madad in New York City[4] and various scientists, Dr. Goracke's personal and professional struggle in a rural setting was a particularly compelling and memorable part of the documentary.