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Allergy & Immunology Specialist, Pediatrician
29 years of experience
Video profile
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).

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Tad Johnson is Excellent. Dr. Johnson has been reviewed by 1 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Specialties & Research

Dr. Tad Johnson, MD is board certified in Allergy & Immunology and Pediatrics.

  • He has special expertise in 11 areas:
  • Allergy
  • Anaphylaxis
  • Asthma
  • Atopic Dermatitis
  • Drug Allergy
  • Eczema
  • Food Allergy (Hypersensitivity)
  • Hay Fever (Seasonal Allergic Rhinitis)
  • Immunotherapy
  • Latex Allergy (Latex Hypersensitivity)
  • Nasal Allergy (Rhinitis)

Education & Awards

Dr. Johnson graduated from Mayo Medical School, Rochester.


Dr. Johnson has 22 hospital affiliations:

  • Oconomowoc Memorial Hospital 
  • Columbia Hospital, Inc. 


  • Spanish
  • English

> > > > Dr. Tad Johnson, MD

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Additional Information
Dr. Tad Mark Johnson MD is a male Allergist & Immunologist, has 29 years of experience and practices in Pediatrics and Allergy & Immunology.
Where does Dr. Tad M. Johnson practice?
Dr. Tad Johnson has 8 office locations.
Dr. Tad Johnson practices Pediatrics and Allergy & Immunology near Milwaukee, WI.
Additional practice locations include: Janesville, WI and Mequon, WI.
See Milwaukee Pediatricians and Milwaukee Allergists.