Mercy Walworth Hospital and Medical Center in Lake Geneva Welcomes New Allergist

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Dr. Johnson treats patients of all ages, from infants to senior adults. His areas of special interest include asthma, food allergies, hay fever, eczema, hives, drug allergies, sinus problems, and insect sting reactions.

Tad Johnson, MD

Tad Johnson, MD

Mercy Walworth Hospital and Medical Center Welcomes New Allergist Tad Johnson, MD

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Mercy Health System welcomes board certified allergist/immunologist, Tad M. Johnson, MD, to the allergy/immunology staff at Mercy Walworth Hospital and Medical Center, Hwys. 50 and 67, Lake Geneva. He joins board certified allergist/immunologist, Ronald Ragotzy, MD.

Dr. Johnson earned his medical degree at Mayo Clinic College of Medicine, Rochester, MN, and served his pediatric residency at Children’s Hospital of Wisconsin, Milwaukee. He then completed his allergy/immunology fellowship at the Medical College of Wisconsin, Milwaukee. Dr. Johnson is certified by the American Board of Pediatrics and the American Board of Allergy and Immunology.

Dr. Johnson welcomes new patients from all areas of Walworth County Wisconsin including Elkhorn, Delavan, Darien, Lake Geneva, Williams Bay, Fontana, Walworth, Whitewater, Burlington and East Troy. To make an appointment, please call (262) 245-0535 or toll-free (877) 893-5503.

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