You will have to find another doctor who will prescribe this for you.

你要再找别的医生开这个处方给你。

youdao

I have low back pain for two years, was diagnosed with lumbar disc herniation, the more rule to find another doctor more pain, doctors recommended surgery.

我腰痛两年，被诊断为腰间盘突出，找别的医生越治越痛，西医建议做手术。

youdao

Another doctor examined her and could still find nothing wrong.

另一个医生对她进行了检查，仍然找不出任何毛病。

《柯林斯英汉双解大词典》

Ms. Felice received a letter from her pediatrician a few years ago stating that because the family chose not to vaccinate, it needed to find another doctor.

WSJ: More Doctors 'Fire' Vaccine Refusers

So if you have a physician who makes you wait for long periods every time he sees you, then I encourage you to find another doctor who values your time.

CNN: Long wait at the doctor's office? Blame the patients