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Prepositions with nouns

Prepositions used with doctor

Different prepositions with doctor express qualification, direction, agency, purpose, or field of work.

Quick answer

Which preposition should you use with doctor?

Use to with visits, as in go to the doctor. Use by for actions performed by a doctor. Use of in titles such as Doctor of Medicine. Use for when describing purpose or need. Use in with medical fields or locations.

You should go to the doctor soon.
She was treated by a doctor immediately.
He earned a degree as a Doctor of Medicine.
She specialises in child medicine.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
to the doctor

Visiting a doctor

Use to after go, speak, or refer when directing someone toward a doctor.

I need to go to the doctor tomorrow.
The nurse referred him to a doctor.
2
by a doctor

Actions performed by a doctor

Use by in passive structures to show who performed an action.

The patient was examined by a doctor.
The certificate was signed by the doctor.
3
Doctor of + field

Academic and professional titles

Use of in formal degree names and titles.

She became a Doctor of Philosophy in chemistry.
He is a Doctor of Medicine.
4
doctor in + field

Specialisation or workplace

Use in for fields, departments, or locations.

She is a doctor in emergency medicine.
There is no doctor in the village tonight.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
of doctor
The phrase of doctor alone is not standard.
Use doctor of plus a field for formal titles instead.
to doctor
Patients were sent to the doctor.
Shows movement or referral toward a doctor.
by doctor
The form was signed by a doctor.
Shows the person performing an action; an article is usually needed.
for doctor
She studied for her doctor qualification.
Possible in limited contexts about preparation or purpose, but not the main pattern.
in doctor
In doctor is not idiomatic for profession or location.
Use doctor in plus a field or place instead.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using in doctor for profession

English uses doctor in plus a field, not in doctor.

✕ He works in doctor ✓ He works as a doctor

Leaving out the article after by

Singular countable nouns usually need an article.

✕ treated by doctor ✓ treated by a doctor

Using of doctor instead of doctor of

Formal titles place doctor before of.

✕ of doctor medicine ✓ Doctor of Medicine

Quick practice

Choose the expression that matches the intended meaning.

1. You should go ___ the doctor if the pain continues.
2. The patient was examined ___ a doctor.
3. She earned the title Doctor ___ Philosophy.

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Frequently asked questions

Is go to doctor correct?

In standard English, use an article: go to the doctor or go to a doctor.

When do we use doctor in?

Use doctor in before a field or place, such as doctor in oncology or doctor in the clinic.

Can for doctor be correct?

Yes, but only in special contexts, such as studying for a medical qualification.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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