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Oncologist

An oncologist specializes in diagnosing and treating cancer. They’ll identify treatment options and discuss each option’s benefits and side effects. They’ll also oversee your treatment and manage your post-treatment care. Many oncologists go through training to provide a particular type of cancer treatment, like surgery or radiation therapy.

Overview

What is an oncologist?

An oncologist is a cancer doctor. These healthcare providers specialize in oncology — the branch of medicine that focuses on diagnosing, staging and treating cancer.

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A visit to an oncologist gives you an opportunity to talk with a specialist who understands what you’re going through. Oncologists also have experience in helping people cope with the stress and anxiety a possible cancer diagnosis can bring. They’re ready to help, and they’ll walk with you every step of the way.

What does an oncologist do?

Oncologists can:

  • Run tests to diagnose cancer
  • Offer a second opinion on a previous diagnosis
  • Identify treatment options
  • Discuss each option’s benefits and side effects
  • Oversee cancer treatment
  • Manage post-treatment care

Does seeing an oncologist mean I have cancer?

Seeing an oncologist doesn’t necessarily mean you have cancer. An oncologist gets involved if you have symptoms that might be cancer. If your healthcare provider refers you to an oncologist, don’t wait to schedule an appointment. The sooner you get a diagnosis, the better. Many cancers are more treatable in the early stages.

Types of oncologists

Cancer is a complex disease. People with cancer often need multiple oncologists on their healthcare team. This multidisciplinary approach allows each specialist to focus on a different area of your treatment with a common goal of collaborative, compassionate care.

Some oncologists specialize in certain treatments:

  • Surgical oncologists. If your biopsy shows cancer cells, this healthcare provider will do surgery to remove cancer that hasn’t spread. They’ll remove your tumor and surrounding tissues. They’ll also help you prepare for and recover from your surgery.
  • Medical oncologists. These providers treat cancer using chemotherapy, hormonal therapiesimmunotherapy and other targeted treatments. People often think of the medical oncologist as their primary cancer doctor. This is because they typically see them the most often. Most medical oncologists also specialize in hematology (the diagnosis and treatment of blood disorders and blood cancers).
  • Radiation oncologists. These healthcare providers use radiation therapy to treat cancer. Radiation can shrink tumors before surgery or kill remaining cancer cells after surgery. You might have radiation as a stand-alone treatment or in combination with other therapies.

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Other oncologists specialize in diagnosing and treating certain kinds of cancer:

What should I expect during my first visit to an oncologist?

Meeting with an oncologist for the first time can bring a sudden sense of uncertainty. Do I have cancer? How long have I had it? What will my life look like now? If these are the questions racing through your mind, you’re not alone. Your oncologist is here to help you navigate these emotions.

During your first visit, your oncologist will:

  • Ask you to describe your symptoms in detail
  • Do a physical examination
  • Review your medical records, including family history and any past or current health conditions
  • Run any necessary tests (like imaging tests or lab work) to learn more about your symptoms
  • Determine whether you need a biopsy

Once your oncologist gathers the information they need, they’ll:

  • Discuss the results of your tests
  • Send their findings to the healthcare provider who referred you
  • Tell you whether you have cancer and if so, what kind
  • Talk to you about different treatment options
  • Listen to your concerns and anxieties
  • Give you resources that can offer support and additional information

Your first oncology visit may take up to three hours. Besides talking with your medical oncologist, you might also meet with counselors, social workers or other oncology specialists.

Follow-up oncology visits

You’ll see your oncologist regularly during cancer treatment. How often you have appointments depends on the type of cancer you have and your current treatment regimen. During your first visit, your oncologist can tell you what to expect.

Questions to ask my oncologist

Here are some questions you might want to ask your oncologist:

  • Where is my tumor?
  • How big is it?
  • What stage of cancer do I have?
  • What’s the survival rate for people with my diagnosis?
  • How long will my treatment take?
  • Will I be able to work during treatment?
  • Will treatment affect my fertility?
  • Do I need additional testing?
  • How often will I have follow-up visits?
  • How can I take care of myself during treatment?
  • Are there support groups available?
  • How do I tell my family about my diagnosis?

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When should I call my oncologist?

If you’ve already started cancer treatment with an oncologist, some things warrant an immediate phone call to your provider. Call your oncologist right away if you develop:

Additional Common Questions

What education do you need to become an oncologist?

All oncologist educations begin with obtaining a bachelor’s degree and a medical degree. Oncologists who specialize in medical oncology, surgical oncology, radiation oncology or hematology oncology complete residencies and fellowship programs before obtaining licensure and certification. All in all, it takes about 14 to 16 years to become an oncologist.

A note from Cleveland Clinic

You might be anxious about seeing an oncologist because you’re worried you could have cancer. And if you’re diagnosed with cancer, you may wonder what your future looks like. It’s normal to feel frustrated, too, because you have questions for which there are no easy, black-and-white answers. Your oncologist understands those emotions, and they’re here to help however they can.

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Medically Reviewed

Last reviewed on 11/25/2024.

Learn more about the Health Library and our editorial process.

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