Dr. Gregory Jan Czarnota – Oncologist / Hematologist | Toronto, ON

Dr. Gregory Jan Czarnota, a Radiation Oncologist, utilizes advanced radiation therapies to treat various forms of cancer, working as part of a multidisciplinary team. Practicing at a specialized cancer centre within a hospital department in Toronto, ON, he is part of a dedicated healthcare team committed to providing comprehensive cancer care. His approach aligns with the standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring high-quality, safe, and effective treatment. Dr. Czarnota's expertise includes the precise planning and delivery of radiation therapy for a variety of cancer types, aiming to improve patient outcomes and quality of life.

He graduated with a Medical Degree from the University of Toronto in 2000 and has been practicing as a Radiation Oncologist for over 19 years since 2005. He is certified as a RCPSC Specialist in Radiation Oncology (Cancer Treatment with Radiation), demonstrating his specialized training and commitment to excellence in his field.

Dr. Czarnota is dedicated to providing multidisciplinary, evidence-based care tailored to each patient. He values clear communication and compassionate support, working closely with patients and their families throughout the treatment journey. Fluent in English and Polish, he strives to serve Toronto’s diverse community with professionalism and empathy.

Dr. Gregory Czarnota has expertise in managing a wide range of conditions, including:

Hematologic Malignancies (Blood Cancers) Treated

• Chronic Myeloid Leukemia (CML): A type of cancer that starts in certain blood-forming cells of the bone marrow, often managed with targeted therapies.
• Myelodysplastic Syndromes (MDS): A group of diverse bone marrow disorders in which the bone marrow does not produce enough healthy, mature blood cells.
• Acute Lymphoblastic Leukemia (ALL): A type of cancer of the blood and bone marrow that affects white blood cells called lymphocytes, common in children but also occurs in adults.

Common Areas/Cancers Treated with Radiation Oncology

• Head & Neck Cancers (e.g., Laryngeal, Pharyngeal, Oral Cavity): Utilizing radiation therapy as a primary treatment, or in conjunction with surgery and/or chemotherapy for cancers of the head and neck region.
• Gynecologic Cancers (e.g., Cervical, Uterine, Vaginal, Vulvar - Radiation Aspects): Application of external beam radiation and/or brachytherapy for cancers of the female reproductive tract.
• Genitourinary Cancers (e.g., Prostate, Bladder, Testicular): Using radiation therapy, including brachytherapy for prostate cancer, to treat cancers of the male and female urinary and reproductive systems.

Common Cancers (Solid Tumors) Treated

• Colorectal Cancer (Colon & Rectal Cancer): Cancer that starts in the colon or rectum, often managed with surgery, chemotherapy, radiation (for rectal), and targeted therapies.
• Genitourinary Cancers (Bladder, Kidney, Testicular, Penile): Cancers affecting the urinary system (kidneys, bladder) or male reproductive organs (testes, penis), managed with chemotherapy, immunotherapy, or targeted agents.
• Melanoma & Advanced Skin Cancers: Aggressive forms of skin cancer, where oncologists manage systemic treatments like immunotherapy or targeted therapy for advanced or metastatic disease.

This list provides examples of common conditions treated and is not exhaustive. Cancer and blood disorders are complex, and treatment is highly individualized. For personalized advice, please discuss your specific situation with Dr. Gregory Czarnota or your referring physician.

• Stereotactic Body Radiotherapy (SBRT) / Stereotactic Ablative Radiotherapy (SABR) / Stereotactic Radiosurgery (SRS): Delivering highly focused, high-dose radiation to precisely targeted tumors or lesions in the brain or body, often in a few treatment sessions.
• External Beam Radiation Therapy (EBRT) - 3D Conformal, IMRT, VMAT: Developing precise, individualized plans for delivering radiation using external machines (e.g., linear accelerators) with techniques like Intensity-Modulated Radiation Therapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT).
• Genetic Counseling & Testing Referrals for Hereditary Cancer Syndromes: Assessment of family history and risk factors, and coordination of referrals for genetic counseling and testing for inherited predispositions to cancer (e.g., BRCA).
• Radiation Therapy Consultation & Treatment Planning: Comprehensive assessment to determine if radiation therapy is an appropriate treatment modality, followed by meticulous 3D/4D simulation and treatment planning.
• Image-Guided Radiation Therapy (IGRT): Utilizing advanced imaging during treatment delivery to precisely target tumors and adapt to changes, while minimizing exposure to healthy tissues.
• Total Body Irradiation (TBI) - Component of Stem Cell Transplant Regimens: Radiation therapy delivered to the entire body, often used as part of the conditioning regimen before a bone marrow or stem cell transplant.
• Performance Status Assessment & Treatment Eligibility Evaluation: Evaluating a patient's overall fitness and ability to tolerate specific anti-cancer treatments.

Note: This list provides a general overview of services offered in Radiation Oncology (Cancer Treatment with Radiation). Treatment plans are highly individualized. Dr. Czarnota provides a wide array of diagnostic, therapeutic, and supportive care options tailored to each patient's specific condition and needs. Please discuss with Dr. Czarnota or your healthcare team for details relevant to your care.

All medical services and treatments are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO) and relevant cancer care guidelines. A referral is required.

Dr. Czarnota practices at a specialized cancer centre located within a hospital department in the Lawrence Park neighborhood of Toronto. The facility is conveniently situated near the Port Lands area, with accessible public transit options including TTC (Subway, Streetcar, Bus). The centre is wheelchair accessible to accommodate all patients. Paid parking options are close by, ensuring ease of access for patients and visitors seeking expert cancer treatment in Toronto.

Are consultations and treatments with Dr. Czarnota, an Radiation Oncologist, covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary consultations, diagnostic tests (like biopsies, imaging reviews), chemotherapy, immunotherapy, targeted therapies, radiation therapy planning and delivery, and management of blood disorders by a licensed Radiation Oncologist such as Dr. Czarnota are generally covered by Ontario Health Insurance Plan (OHIP) in ON when a referral from a family doctor or another specialist is in place. Specific drug coverage for newer therapies can vary by provincial formularies and may require special authorization. It's always recommended to discuss coverage specifics with Ontario Health Insurance Plan (OHIP), Dr. Czarnota's office, the hospital's patient financial services, or the cancer care navigation services at the treatment facility.

Do I need a referral to see Dr. Czarnota, an Radiation Oncologist?

Yes, a referral from your family physician or another specialist is almost always required to see an Radiation Oncologist like Dr. Czarnota for assessment or treatment of cancer or significant hematological conditions. This ensures that your primary care provider is involved in your care continuum and that you are directed to the most appropriate specialist for your specific situation. Cancer care programs often have centralized intake systems that manage referrals to ensure timely access.

How will treatment decisions be made for my condition by Dr. Czarnota?

Treatment decisions in oncology and hematology are highly personalized and made collaboratively. Dr. Czarnota will consider many factors, including the type and stage of your cancer or blood disorder, your overall health, genetic markers of the disease (if applicable), current treatment guidelines, and importantly, your personal preferences and values. Often, cases are discussed in multidisciplinary team meetings (tumor boards) with other specialists to ensure a comprehensive approach. You will be an active participant in this decision-making process.

Does a Hematologist only treat blood cancers?

No, Hematologists treat a wide range of blood disorders, not just cancers. This includes benign (non-cancerous) conditions such as various types of anemia (e.g., iron deficiency anemia, vitamin B12 deficiency, sickle cell anemia, thalassemia), bleeding disorders (like hemophilia or von Willebrand disease), clotting disorders (thrombophilia, deep vein thrombosis, pulmonary embolism), and issues with white blood cells (like neutropenia) or platelets (like ITP). Dr. Czarnota, if focused on hematology, can diagnose and manage these conditions.

2075 Bayview Avenue
Toronto, ON M4N 3M5

Phone: (416) 480-4982 | Fax: (416) 480-6002

The facility is wheelchair accessible.

Dr. Czarnota is a licensed Radiation Oncologist regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Regulated Health Professions Act, 1991 and Medicine Act, 1991 in ON. A referral from a family physician or other specialist is required for most consultations and treatments under the provincial health plan.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Czarnota-Gregory-Jan/0168501-75024