Understand Your Cancer Treatment Team

Cancer care today rarely rests on just one doctor. From medical oncologists and surgeons to nurse navigators, dietitians, social workers, and rehab therapists, you’ll work with a full team—each with a specific role in your diagnosis, treatment, and recovery. This overview explains who’s on your cancer treatment team, what they do, and how understanding their…

Dr. C H Weaver MD
5–7 minutes
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Cancer care is increasingly delivered by a multidisciplinary team. That means your treatment plan is developed and coordinated by several different specialists who each bring their own expertise. It’s normal—and important—to meet many different professionals during diagnosis, treatment, and recovery. Knowing who they are and what they do can help you feel more informed and empowered.

For many cancers, especially common ones like lung and breast cancer, treatment should not start until the team has discussed the best overall approach with you. A surgeon may be the first doctor you see and may perform a biopsy to diagnose the cancer, but in many situations chemotherapy, immunotherapy, or other systemic treatments are given before surgery. Your team works together to decide what’s right for your specific case.

Medical oncologist

The medical oncologist is often the central doctor in your cancer care team.

  • Reviews your medical history, examines you, and orders tests such as blood work and scans.

  • Determines the type of cancer and its stage—how big the tumor is, how far it has grown into nearby tissues, whether lymph nodes are involved, and whether it has spread to other parts of the body. Staging is crucial because it strongly influences treatment choices and expected outcomes.

  • Develops your initial treatment plan and adjusts it as needed, prescribing chemotherapy, immunotherapy, targeted therapies, or other medications.

  • Coordinates with other specialists, such as surgeons and radiation oncologists, and continues to see you for follow‑up visits after your first course of treatment is finished.

Surgeon / surgical oncologist

Surgery is an important part of treatment for many cancers.

  • You may be referred to a surgeon by your primary care doctor, another specialist, or your medical oncologist.

  • Surgeons who specialize in cancer surgery or in a particular type of cancer can sometimes offer better outcomes than general surgeons, depending on the situation.

  • Before surgery, you’ll have a consultation where the surgeon reviews your records, examines you, and may order additional tests. This is a good time to ask questions about the procedure, recovery, and possible risks.

  • The type and extent of surgery are tailored to your cancer and overall health, and surgery is usually planned as part of the broader treatment strategy, not in isolation.

Radiation oncologist

Radiation oncologists are doctors who treat cancer with radiation therapy.

  • Decide whether radiation is appropriate, and if so, determine the exact dose and where it should be delivered.

  • Meet with you to go over your diagnosis, discuss the goals of radiation, and explain what to expect during treatment.

  • Arrange imaging tests during therapy to see how the cancer is responding, and interpret those scans.

  • If radiation is your only treatment, the radiation oncologist may be the main physician you see during and after therapy.

Oncology nurse navigator

An oncology nurse navigator helps you and your family move through the healthcare system more smoothly.

  • Identifies and reduces barriers to care, such as scheduling problems, transportation challenges, or insurance issues.

  • Helps coordinate appointments and communication among different doctors, clinics, and hospitals.

  • Connects you with support services, including financial counseling, language interpretation, or community resources.

This role is designed to make complex care easier to manage, so you can focus more on your health and less on logistics.

Physician assistant (PA)

Many cancer centers include physician assistants as part of the clinical team.

  • Work closely with doctors and nurses under physician supervision.

  • Perform physical exams, order tests, prescribe certain medications, and review test results.

  • May carry out some medical procedures or assist in surgery.

  • Often provide education about your diagnosis and treatment, and can be a key contact for questions about hospital discharge and follow‑up care.

Dietitian / nutritionist

Dietitians and nutritionists focus on your nutritional health during and after treatment.

  • Assess your nutritional needs and develop individualized eating plans.

  • Work with your doctors to support healing, maintain strength, and manage treatment‑related side effects.

  • Help address issues such as loss of appetite, taste changes, nausea, or weight loss by suggesting practical food choices and recipes.

Good nutrition can improve energy, support immune function, and help you tolerate treatment better.

Oncology social worker

Oncology social workers support you and your family emotionally and practically throughout the cancer experience.

  • Provide counseling and help you cope with the emotional impact of diagnosis, treatment, and survivorship.

  • Explain medical terminology, paperwork, and procedures, and help you understand your rights within the healthcare system.

  • Connect you with community resources, such as financial assistance, transportation, lodging near treatment centers, and support groups.

  • Help you prepare important documents, such as advance directives, living wills, or medical powers of attorney.

  • Support families with end‑of‑life care and bereavement when needed.

Rehabilitation therapists

Rehabilitation specialists help you regain function and independence.

  • Physical therapists focus on strength, mobility, and endurance. They teach exercises and activities to reduce pain and fatigue and improve physical functioning.

  • Occupational therapists help with everyday tasks such as dressing, bathing, and eating, and may suggest tools or strategies to make these activities easier.

Rehabilitation can be beneficial during and after treatment, supporting recovery and quality of life.

Putting it all together

Your cancer treatment team may include many different professionals, each with a specific role:

  • Medical oncologist

  • Surgeon or surgical oncologist

  • Radiation oncologist

  • Oncology nurse navigator

  • Physician assistant

  • Dietitian or nutritionist

  • Oncology social worker

  • Rehabilitation specialists

Understanding who these team members are and how they contribute to your care can help you ask the right questions, make informed decisions, and feel more confident as you move through treatment. If you are unsure about someone’s role, it is always appropriate to ask how they fit into your care and what they can help you with.

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Connect With Others for Support and information

Cancer Connect was the first social network created for people with cancer. Founded by oncologists to support cancer patients and their caregivers, over 40 million individuals have accessed Cancer Connect programs since 1997. Cancer Connect is used by leading cancer centers like Dana Farber and Roswell Park to support their patients. Join the conversation, ask questions, share your experience, and learn how the best cancer centers are treating cancer from others. Share your experience, ask a question, or start a conversation by posting on Cancer Connect.

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