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).
Learn more about Dr. John Marcinak:
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Specialties & Research
Dr. John Marcinak, MD is board certified in Pediatrics and Pediatric Infectious Diseases.
- He has special expertise in 2 areas:
- Sickle Cell Anemia
- Staphylococcal Infections (Staph Infection)
Education & Awards
Dr. Marcinak graduated from The Ohio State University , Columbus.
Dr. Marcinak has 4 hospital affiliations:
- The University of Chicago Medicine
- Holy Rosary Healthcare