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. Leonard Grayson:
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Specialties & Research
Dr. Leonard Grayson, MD is board certified in Allergy & Immunology and Dermatology.
- He has special expertise in 4 areas:
- Acne (Acne Vulgaris)
- Acne Rosacea
- Nasal Allergy (Rhinitis)
Education & Awards
Dr. Grayson graduated from Rosalind Franklin University, North Chicago.
Dr. Grayson has 1 hospital affiliations:
- Blessing Hospital at 11th St