Skip to Main Content

Mario Sznol, MD

Medical Oncology, Melanoma and Onco-Dermatology, Genitourinary Oncology
Telehealth is available
Learn more about telehealth
Patient type treated
Accepting new patients
Referral required
From patients or physicians
Board Certified in
Internal Medicine and Medical Oncology


Mario Sznol, MD, is a medical oncologist at Yale Medicine and the co-director of the Cancer Immunology Program at Yale Cancer Center. He sees patients with melanoma (a type of skin cancer), or kidney cancers.

Dr. Sznol became interested in melanoma and kidney cancers early in his career following his research interest in immunotherapies. Those immunotherapies were particularly effective for melanoma and kidney cancer patients.  

As a clinician, Dr. Sznol aims to be honest and straightforward with his patients. “We have a very frank discussion with our patients about the disease, what to expect, and all the options for treatment if treatment is indicated.” From there, he engages his team to help patients schedule their treatments and feel as comfortable as possible with the experience. “One of the best ways to make sure our patients and their families feel most comfortable is to provide reassurance that our team at Smilow is available to provide support and help whenever necessary.”

Dr. Sznol believes that his team’s expertise and genuine care for patients, as well as the easy access to great medical colleagues, is what sets him apart as a doctor. “We get excited when we can help people and return them back to their normal lives,” he says.

In addition to seeing patients, Dr. Sznol conducts research on new treatments for melanoma and kidney cancers with a major focus on immunotherapies. He is also a professor of medicine (medical oncology) at Yale School of Medicine.



  • Professor of Medicine (Medical Oncology)
  • Co-Leader, Cancer Immunology, Yale Cancer Center
  • Co-Director, Yale SPORE in Skin Cancer

Education & Training

  • Fellow
    Mount Sinai College of Medicine (1987)
  • Resident
    Baylor College of Medicine (1985)
  • MD
    Baylor College of Medicine (1982)
  • BA
    Rice University (1979)

Languages Spoken

  • English
  • Español (Spanish)

Additional Information

  • Yale Cancer Center - Melanoma Program
    Smilow Cancer Hospital at Yale New Haven
    35 Park Street, Ste North Pavilion 8
    New Haven, CT, 06511