Вам стоит обратиться к врачу.

Because Russian often uses the pattern:

[person in the dative] + стоит + infinitive

So Вам стоит обратиться literally works like To you it is worth consulting..., which naturally means you should consult...

Here, Вам is the dative form of вы.

• вы = you
• вам = to you / for you

This dative construction is very common in Russian when giving advice.

Here стоит comes from стоить, which usually means to cost or to be worth.

In this pattern, though, it does not mean money. It means something like:

• it is worth
• it would be a good idea
• you should

So Вам стоит обратиться к врачу means that seeing a doctor is advisable.

This is a fairly natural and moderate way to give advice. It is usually less forceful than a direct command.

Because стоит is being used in the structure:

кому + стоит + infinitive

Examples:

• Вам стоит подождать. = You should wait.
• Тебе стоит поехать. = You should go.
• Нам стоит поговорить. = We should talk.

So обратиться stays in the infinitive because it is the action being recommended.

They are aspect partners:

• обратиться = perfective
• обращаться = imperfective

In this sentence, обратиться is used because the advice is about a single completed action: going to a doctor for help / consulting one.

So:

• Вам стоит обратиться к врачу. = You should consult a doctor.
  (one recommended action)

If you used обращаться, it would sound more like a repeated, habitual, or general process, depending on context.

Very often, with advice about one concrete step, Russian prefers the perfective infinitive.

Literally, обратиться can mean something like to turn to, to address, or to apply to someone for help or advice.

With к + dative, it often means:

• to turn to someone
• to consult someone
• to seek help from someone

So обратиться к врачу is literally to turn to a doctor, but in natural English it is usually to consult a doctor or to see a doctor.

Because the verb обратиться commonly takes the preposition к when you are turning to a person for help, advice, or contact.

The pattern is:

обратиться к + dative

So:

• к врачу = to a doctor
• к другу = to a friend
• к специалисту = to a specialist

The preposition к requires the dative case, which is why врач becomes врачу.

Because врач is masculine, and after к it must be in the dative singular.

For many masculine nouns, the dative singular ending is -у or -ю.

So:

• врач → врачу
• друг → другу
• учитель → учителю

That is why you get к врачу.

It can be either:

• formal singular: speaking politely to one person
• plural: speaking to more than one person

Russian вы / вам works both ways, just like you in modern English works for both one person and several people.

So without context, Вам стоит обратиться к врачу could mean:

• You should consult a doctor.
  (said politely to one person)
• You all should consult a doctor.
  (said to multiple people)

It is usually advice, not a direct command.

Вам стоит... sounds like:

• You should...
• It would be a good idea to...
• You’d be better off...

It is softer than:

• Обратитесь к врачу. = Consult a doctor.
  (imperative)
• Вам нужно обратиться к врачу. = You need to consult a doctor.
  (stronger necessity)

So стоит often feels helpful and advisory rather than forceful.

Yes, but the tone changes.

• Вам стоит обратиться к врачу.
  Advice; fairly natural and moderate.

• Вам нужно обратиться к врачу.
  Stronger; more like you need to.

• Вам следует обратиться к врачу.
  Also you should, but slightly more formal or bookish.

• Вам надо обратиться к врачу.
  Common in speech; practical, sometimes stronger than стоит.

So they are similar, but not identical in tone.

Yes. Russian word order is flexible, and the basic meaning stays the same.

Possible variants:

• Вам стоит обратиться к врачу.
• К врачу вам стоит обратиться.
• Обратиться к врачу вам стоит.

The most neutral version is the original one.

Changing the order usually changes emphasis, not the core meaning. For example:

• К врачу вам стоит обратиться puts more focus on to a doctor
• Вам стоит обратиться к врачу sounds straightforward and neutral

The stress is:

• Вам — one syllable
• стОит
• обратИться
• к врачУ

A rough pronunciation guide:

• Вам = vahm
• стоит = STO-it
• обратиться = uh-bra-TEET-sa
• к врачу = k vra-CHOO

A few helpful notes:

• ться at the end of обратиться is pronounced roughly like -tsa
• к врачу can be a little hard because of the consonant cluster; listen for the stress on the last syllable: врачУ

Because Вам already identifies the person involved, and Russian often does not need a separate subject in this kind of construction.

This is not built like standard You should... in English. Instead, it is more like an impersonal recommendation structure:

Вам стоит обратиться...

That sounds complete and natural on its own.

Adding вы would usually be unnecessary here.

It would be similar, but not exactly the same.

• обратиться к врачу = to consult a doctor / turn to a doctor for help
• сходить к врачу = to go see a doctor

The second one focuses more on the physical act of going. The first one sounds a bit more formal and emphasizes seeking medical help or advice.

So both can fit many situations, but обратиться к врачу is often more formal or official-sounding.