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Oncology Specialist (cancer)
31 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Specialties & Research

Dr. Mark Ratain, MD is board certified in Medical Oncology.

  • He has special expertise in 3 areas:
  • Cancer
  • Epidemiology
  • Gene Therapy

Education & Awards

Dr. Ratain graduated from Yale University, New Haven. He has 2 awards.

Castle Connolly America's Top Doctors® (2002 - 2008, 2010 - 2015)
Castle Connolly America's Top Doctors® for Cancer (2005 - 2007, 2009 - 2012, 2014 - 2015)


Dr. Ratain has 1 hospital affiliations:

  • The University of Chicago Medicine 


  • English

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Additional Information
Dr. Mark J Ratain MD is a male Oncologist , has 31 years of experience and practices in Medical Oncology.
Where does Dr. Mark J. Ratain practice?
Dr. Mark Ratain has 3 office locations.
Dr. Mark Ratain practices Medical Oncology near Chicago, IL.
Additional practice locations include: Burr Ridge, IL.
See Chicago Oncologists.