A clínica está credenciada para a avaliação psicológica.

In Portuguese, the definite article is used much more often than in English. So a clínica is the normal way to say the clinic.

Leaving out the article can sound incomplete in a normal sentence, though it may happen in:

• signs
• headlines
• labels
• very technical or note-like writing

So in standard speech and writing, A clínica... is the natural choice.

Estar here emphasizes the clinic’s current status: it is accredited / is currently authorized.

So A clínica está credenciada... suggests:

• the clinic has obtained accreditation
• that status is valid now

You may also see é credenciada in some contexts, especially in institutional or descriptive language, but está credenciada often sounds more like a present, official condition.

A rough contrast:

• está credenciada = it is currently accredited
• foi credenciada = it was accredited
• é credenciada = it is an accredited clinic / it is accredited as a general characteristic

Credenciada comes from the verb credenciar, which means to accredit, authorize, certify, or officially recognize.

In this sentence, credenciada means something like:

• accredited
• authorized
• officially approved
• credentialed

So the clinic is not just capable of doing the evaluation; it has the proper official recognition to do it.

Because it agrees with clínica, which is a feminine singular noun.

Portuguese adjectives and many participles must agree in gender and number with the noun they describe.

Examples:

• a clínica credenciada = the accredited clinic
• o hospital credenciado = the accredited hospital
• as clínicas credenciadas = the accredited clinics
• os hospitais credenciados = the accredited hospitals

So credenciada matches clínica.

It is best understood as a past participle being used like an adjective, together with estar.

So:

• está = is
• credenciada = accredited

This is very similar to English is accredited.

You can think of está credenciada as describing the clinic’s state or official status.

Here para expresses purpose or scope.

So credenciada para a avaliação psicológica means:

• accredited for psychological evaluation
• accredited to perform psychological evaluation

A fuller paraphrase would be:

A clínica está credenciada para realizar a avaliação psicológica.

That version makes the implied action more explicit: to carry out the psychological evaluation.

Because avaliação is a feminine noun, and here it is used with the definite article a.

So:

• para = for
• a avaliação psicológica = the psychological evaluation

Together: para a avaliação psicológica = for the psychological evaluation

This is completely normal Portuguese structure.

Because à only comes from the contraction of a + a:

• preposition a
• article a

Example:

• Vou à clínica. = I’m going to the clinic.

But in your sentence the preposition is para, not a:

• para + a = para a

In informal Brazilian Portuguese, para a is often reduced in speech to pra:

• pra avaliação psicológica

But in more careful or formal writing, para a is very normal.

Yes, that is possible.

Both are natural, but they can feel slightly different:

• para a avaliação psicológica = a bit more complete or specific
• para avaliação psicológica = a bit more general, compact, or bureaucratic

In official or administrative language, dropping the article is common. But the version with a is also fully correct and natural.

Because in Portuguese, adjectives usually come after the noun.

So:

• avaliação psicológica = psychological evaluation
• literally: evaluation psychological

That word order is the normal one in Portuguese.

Putting psicológica before the noun would sound unnatural here.

Usually clínica means clinic, but depending on context it can also refer to:

• a medical practice
• a healthcare center
• a specialized facility

In this sentence, a clínica is simply the institution that has official authorization to carry out psychological evaluations.

Yes, it sounds fairly formal and institutional.

That comes from words like:

• credenciada
• avaliação psicológica

This is the kind of sentence you might see:

• on a website
• in official documentation
• in healthcare administration
• in legal or professional contexts

In everyday speech, someone might use a less formal paraphrase, such as:

A clínica tem autorização para fazer avaliação psicológica.

That means basically the same thing, but in simpler language.