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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. Marshall Cusic:

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Specialties & Research

Dr. Marshall Cusic, MD is board certified in Allergy & Immunology and Pediatrics.

  • He has special expertise in 4 areas:
  • Asthma
  • Food Allergy (Hypersensitivity)
  • Hay Fever (Seasonal Allergic Rhinitis)
  • Nasal Allergy (Rhinitis)

Education & Awards

Dr. Cusic graduated from University of Wisconsin at Madison.


Dr. Cusic has 15 hospital affiliations:

  • Saint Joseph's Hospital-Marshfield 
  • Howard Young Medical Center 


  • Spanish

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Additional Information
Dr. Marshall E Cusic MD is a male Allergist & Immunologist, has 43 years of experience and practices in Allergy & Immunology, Allergy, and Pediatrics.
Where does Dr. Marshall E. Cusic practice?
Dr. Marshall Cusic has 1 office location.
Dr. Marshall Cusic practices Allergy & Immunology, Allergy, and Pediatrics near Marshfield, WI.
See Marshfield Allergists and Marshfield Pediatricians.