Русско-англо-русский юридический словарь

The proportion of foreign nationals increases for professionally qualified clinical staff (14%) and even more so for doctors (26%), prompting the British Medical Association (BMA) to observe that without the contribution of non-British staff, "many NHS services would struggle to provide effective care to their patients". (The Guardian)

sick note: a letter from a doctor to your employer that says that you are too ill to work (Cambridge Business English Dictionary)

Professional services are occupations in the service sector requiring special training in the arts or sciences. Some professional services require holding professional degrees and licenses and they also require specific skills such as architects, accountants, engineers, doctors, lawyers and teachers. (Wikipedia)

If symptoms persist, consult a doctor without delay.

An increasing number of people are consulting their accountants about the tax laws.

I need to consult with my lawyer.

You should consult your lawyer before exchanging contracts. (Longman Dictionary of Contemporary English)