Dr. Ezra Hahn – Oncologist / Hematologist | Toronto, ON

Dr. Ezra Hahn, a Radiation Oncologist, utilizes advanced radiation therapies to treat various forms of cancer, working as part of a multidisciplinary team. Practicing at Keele Street Surgery in Toronto, ON, he is part of a dedicated healthcare team committed to providing patient-centered, hopeful cancer care. His expertise includes the precise planning and delivery of radiation therapy for a variety of cancer types, with a focus on improving outcomes and quality of life for his patients. Dr. Hahn adheres to the highest standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring comprehensive and safe treatment for adults with suspected or diagnosed cancer or blood disorders, supported by access to state-of-the-art diagnostic and treatment facilities.

He graduated with a Medical Degree from the University of Toronto in 2013 and has been practicing as a Radiation Oncologist for over 6 years since 2018. Dr. Hahn is certified as a RCPSC Specialist in Radiation Oncology, specializing in cancer treatment with radiation, which reflects his dedication to maintaining excellence in his field and staying current with the latest advancements.

Dr. Hahn’s clinical philosophy centers on multidisciplinary collaboration, evidence-based treatment approaches, and compassionate support for patients and their families. He is committed to advancing cancer care through continuous education and research, ensuring that every patient receives personalized, effective treatment. Fluent in English, he is dedicated to providing clear communication, hope, and reassurance to those he cares for in Toronto and the surrounding community.

Dr. Ezra Hahn has expertise in managing a wide range of conditions, including:

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.
• 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.
• Sarcomas (Bone & Soft Tissue - Radiation Aspects): Role of radiation therapy in the multidisciplinary management of sarcomas, often used before or after surgery.

Common Cancers (Solid Tumors) Treated

• Prostate Cancer: Cancer developing in the prostate gland in men, with treatment options including hormone therapy, chemotherapy, radiation, or active surveillance.
• Neuroendocrine Tumors (NETs): A diverse group of tumors that arise from cells of the endocrine (hormonal) and nervous systems, treated with various systemic therapies.
• Colorectal Cancer (Colon & Rectal Cancer): Cancer that starts in the colon or rectum, often managed with surgery, chemotherapy, radiation (for rectal), and targeted therapies.

Hematologic Malignancies (Blood Cancers) Treated

• Non-Hodgkin Lymphoma (NHL) (e.g., Diffuse Large B-Cell, Follicular, Mantle Cell): A diverse group of blood cancers that develop from lymphocytes, with many different subtypes requiring tailored treatments.
• Chronic Myeloid Leukemia (CML): A type of cancer that starts in certain blood-forming cells of the bone marrow, often managed with targeted therapies.
• 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.

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. Ezra Hahn 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).
• 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.
• Comprehensive Oncologic & Hematologic Consultation: In-depth evaluation of medical history, review of diagnostic imaging and pathology, cancer staging (if applicable), and development of personalized treatment plans for various cancers and blood disorders.
• 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.
• Performance Status Assessment & Treatment Eligibility Evaluation: Evaluating a patient's overall fitness and ability to tolerate specific anti-cancer treatments.
• Prophylactic Cranial Irradiation (PCI): Preventative radiation treatment to the brain for certain cancers at high risk of brain metastases.

Note: This list provides a general overview of services offered in Radiation Oncology (Cancer Treatment with Radiation). Treatment plans are highly individualized. Dr. Hahn provides a wide array of diagnostic, therapeutic, and supportive care options tailored to each patient's specific condition and needs. Please discuss with Dr. Hahn 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. Ezra Hahn practices at Keele Street Surgery, located in the vibrant Bay Street Corridor (Discovery District) neighborhood of Toronto. The practice is conveniently situated near Kensington Market, providing easy access for patients. Public transit options are plentiful, with the TTC (Subway, Streetcar, Bus) stops within walking distance, making travel straightforward. The facility is wheelchair accessible, ensuring barrier-free access for all patients. Metered street parking is available nearby for those arriving by car, offering additional convenience for visitors to the practice.

Are consultations and treatments with Dr. Hahn, 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. Hahn 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. Hahn'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. Hahn, an Radiation Oncologist?

Yes, a referral from your family physician or another specialist is almost always required to see an Radiation Oncologist like Dr. Hahn 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.

Why might I need a bone marrow biopsy, and what does it involve if Dr. Hahn recommends it?

A bone marrow biopsy and aspiration are procedures used to collect and examine bone marrow, the soft tissue inside your bones where blood cells are made. Dr. Hahn might recommend this test to diagnose or monitor various blood disorders, including leukemias, lymphomas, myeloma, anemias, or infections. The procedure is usually done on the back of the hip bone under local anesthesia. A needle is used to withdraw a small sample of liquid marrow (aspiration) and a small core of bone marrow tissue (biopsy). You may feel some pressure or brief pain.

What is palliative care, and when might Dr. Hahn discuss it?

Palliative care is specialized medical care focused on providing relief from the symptoms and stress of a serious illness, like cancer or advanced blood disorders. The goal is to improve quality of life for both the patient and the family. It can be provided at any stage of illness, alongside curative treatments, not just at the end of life. Dr. Hahn may discuss palliative care if you are experiencing significant symptoms, to help manage pain, fatigue, nausea, anxiety, or other issues, and to provide an extra layer of support.

Keele Street Surgery
Suite 200, 610 University Ave
Toronto, ON M5G 2M9

Phone: (416) 946-4501

The facility is wheelchair accessible.

Dr. Hahn 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/Hahn-Ezra/0288762-100776