What Is An Oncologist? Types & What They Do
Understanding oncologists: specialists in cancer diagnosis, treatment planning, and comprehensive patient care.
What Is An Oncologist?
An oncologist is a medical doctor who specializes in diagnosing and treating cancer. These highly trained physicians dedicate their careers to understanding the complexities of cancer and developing personalized treatment strategies for each patient. Oncologists work with patients from the moment of diagnosis through treatment and into survivorship, providing compassionate care and expert medical guidance every step of the way.
The role of an oncologist extends far beyond simply prescribing medications or recommending procedures. These specialists take time to thoroughly understand each patient’s unique situation, identify all available treatment options, and discuss the benefits and potential side effects of each approach. They serve as the quarterback of the cancer care team, coordinating with other specialists to ensure comprehensive, multidisciplinary treatment.
One of the most important aspects of visiting an oncologist is the opportunity to speak with a medical professional who truly understands what you’re experiencing. Oncologists have extensive experience helping patients cope with the emotional stress, anxiety, and fear that often accompany a cancer diagnosis. They’re equipped not only with medical expertise but also with empathy and communication skills to guide patients through this challenging journey.
Why You Might Need An Oncologist
Cancer is inherently a complex disease that rarely responds to a single treatment approach. Most patients with cancer benefit from having multiple oncologists on their healthcare team, each bringing specialized expertise to different aspects of treatment. This multidisciplinary approach ensures that every angle of the disease is addressed and that treatment decisions are made collaboratively with a shared goal of delivering compassionate, evidence-based care.
An oncologist can help you in several important ways:
- Provide accurate diagnosis using advanced diagnostic tools and techniques
- Identify all available treatment options specific to your cancer type and stage
- Explain the potential outcomes, benefits, and side effects of each treatment option
- Develop a personalized treatment plan tailored to your individual needs and preferences
- Oversee your treatment and monitor your progress
- Manage side effects and complications
- Provide survivorship care and long-term follow-up
- Connect you with support services and resources
Types Of Oncologists
Oncology is a diverse field with specialists who focus on different aspects of cancer treatment. Understanding the various types of oncologists can help you appreciate the breadth of expertise involved in comprehensive cancer care.
Medical Oncologists
Medical oncologists are the primary cancer specialists who diagnose cancer and oversee overall cancer treatment strategies. They specialize in using systemic therapies such as chemotherapy, immunotherapy, targeted therapy, and hormone therapy to treat cancer throughout the body. Medical oncologists often serve as the central coordinator of cancer care, working with other specialists to develop and implement comprehensive treatment plans.
Surgical Oncologists
Surgical oncologists specialize in removing tumors and affected tissues through surgical procedures. They possess advanced surgical skills and specialized training in oncologic principles to ensure that tumors are removed completely while preserving as much healthy tissue as possible. These surgeons often work closely with medical oncologists to determine the best timing and approach for surgical intervention.
Radiation Oncologists
Radiation oncologists are specialists who use high-energy radiation therapy to target and destroy cancer cells. They develop precise treatment plans using advanced imaging and planning technologies to deliver radiation directly to tumors while minimizing exposure to healthy surrounding tissues. Radiation therapy can be used alone or in combination with other treatments depending on the cancer type and stage.
Other Specialized Oncologists
Beyond these three main categories, oncologists may specialize in treating specific types of cancer. For example, some focus exclusively on breast cancer, lung cancer, colorectal cancer, or pediatric cancers. These specialists develop deep expertise in the unique characteristics, treatment approaches, and management strategies specific to their disease focus. This specialization allows them to stay current with the latest research and innovations in their particular area.
What Happens During Your First Oncology Visit
Your first appointment with an oncologist is an important step in your cancer care journey. Understanding what to expect can help you prepare and make the most of this crucial meeting.
Initial Evaluation
During your first visit, your oncologist will gather comprehensive information about your health and cancer diagnosis. This typically includes:
- A detailed review of your medical history
- Discussion of your current symptoms and concerns
- Assessment of how the cancer is affecting your daily life
- Evaluation of your overall health status and any existing medical conditions
- Review of any previous cancer treatments you may have received
- Discussion of your family history of cancer
Diagnostic Review And Testing
Your oncologist will review all diagnostic tests, imaging studies, and pathology reports related to your cancer diagnosis. They may order additional tests or imaging to better understand your specific cancer and determine the most appropriate treatment approach. These tests help the oncologist understand the extent of your cancer and identify any genetic or molecular characteristics that might influence treatment decisions.
Treatment Planning
Once your oncologist has gathered all necessary information, they will develop a personalized treatment plan specifically for you. This plan will outline the recommended treatment approach, the expected timeline for treatment, potential side effects you might experience, and what you can expect during the treatment process. The oncologist will discuss all available options and explain the reasoning behind their recommendations.
Extended First Visit
It’s important to note that your first oncology visit may take up to three hours. During this time, you may meet not only with your medical oncologist but also with counselors, social workers, nurses, and other oncology specialists who will play a role in your care. This multidisciplinary approach ensures that all aspects of your care—medical, emotional, and practical—are addressed from the beginning.
Ongoing Cancer Treatment And Follow-Up Care
After your initial evaluation and treatment planning, you’ll see your oncologist regularly throughout your cancer treatment. The frequency of your appointments depends on the specific type of cancer you have and your current treatment regimen. Your oncologist will tell you what to expect in terms of appointment frequency during your first visit.
During ongoing appointments, your oncologist will:
- Monitor your response to treatment through physical exams and diagnostic tests
- Assess and manage any side effects from treatment
- Adjust your treatment plan as needed based on your progress
- Provide supportive care and symptom management
- Answer questions and address your concerns
- Connect you with additional resources and support services
The Multidisciplinary Approach To Cancer Care
Modern cancer treatment recognizes that no single specialist can address all aspects of cancer care. Cancer is such a complex disease that people with cancer often need multiple oncologists on their healthcare team. This multidisciplinary approach allows each specialist to focus on a different area of treatment while maintaining a common goal of collaborative, compassionate care.
A comprehensive cancer care team might include:
- Medical oncologists who oversee systemic treatment
- Surgical oncologists who perform tumor removal procedures
- Radiation oncologists who deliver targeted radiation therapy
- Pathologists who analyze tissue samples and tumor characteristics
- Radiologists who interpret imaging studies
- Nurses and nurse practitioners who provide ongoing support and education
- Social workers and counselors who address emotional and practical concerns
- Nutritionists who help optimize nutrition during treatment
- Palliative care specialists who focus on symptom management and quality of life
This collaborative approach ensures that treatment decisions are made with input from multiple experts, each bringing their specialized knowledge to develop the most effective treatment strategy for your unique situation.
Frequently Asked Questions
What is the main difference between medical, surgical, and radiation oncologists?
Medical oncologists oversee cancer treatment and specialize in systemic therapies like chemotherapy and immunotherapy. Surgical oncologists remove tumors and affected tissues through surgery. Radiation oncologists use high-energy radiation to target and destroy cancer cells. Each plays a distinct but complementary role in comprehensive cancer care.
How long does an initial oncology appointment take?
Your first oncology visit may take up to three hours. This extended appointment allows time for thorough evaluation, review of diagnostic tests, treatment planning discussions, and potentially meetings with other team members like counselors and social workers.
Will I see the same oncologist throughout my cancer treatment?
You will typically see your primary medical oncologist regularly during treatment. Depending on your specific cancer type and treatment plan, you may also work with surgical oncologists, radiation oncologists, and other specialists throughout your treatment journey.
What should I bring to my first oncology appointment?
Bring all medical records related to your cancer diagnosis, previous test results, imaging studies, and pathology reports. Additionally, bring a list of current medications, a notebook to take notes, and consider bringing a trusted family member or friend for support and to help you remember important information.
Can my oncologist help with managing side effects?
Yes, managing side effects is an important part of your oncologist’s role. During treatment, your oncologist will regularly assess and manage any side effects you experience, adjusting your treatment plan as needed to help you maintain the best possible quality of life.
What happens after my cancer treatment is completed?
After treatment ends, your oncologist will provide survivorship care and long-term follow-up. This typically includes regular appointments to monitor for any signs of cancer recurrence, manage any lasting side effects from treatment, and help you transition to life after cancer treatment.
References
- National Cancer Institute – Understanding Cancer — National Institutes of Health. Accessed December 2025. https://www.cancer.gov/about-cancer/understanding
- American Society of Clinical Oncology – Oncology Career Information — American Society of Clinical Oncology. Accessed December 2025. https://www.asco.org/patient-advocacy
- Cleveland Clinic – Hematology & Medical Oncology Department — Cleveland Clinic. Accessed December 2025. https://my.clevelandclinic.org/departments/cancer/depts/hematology-medical-oncology
- Cleveland Clinic Taussig Cancer Institute – Comprehensive Cancer Center Overview — Cleveland Clinic. Accessed December 2025. https://my.clevelandclinic.org/departments/cancer/outcomes/828-institute-summary
- What Is An Oncologist? Types & What They Do — Cleveland Clinic. Accessed December 2025. https://my.clevelandclinic.org/health/articles/22145-oncologist
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