
Medical Registration Verified
Dr. John Johanson is a Gastroenterologist and Internal Medicine in Janesville 53546, Janesville WI and has an experience of 36 years in these fields. Dr. John Johanson practices at in Janesville 53546, Janesville WI. Some of the services provided by the doctor are: Shortness of Breath,Intestinal Diverticulosis,Insomnia,Diabetes Type 2 and Gas-Bloat Syndrome etc.
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93 Surgeries & Treatments

liver biopsy
Hemorrhoidectomy or Excision of Anal Tags
Endoscopy
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy

anoscopy

Wheezing

Vitamin D Deficiency

Vitamin B Deficiency
Venous Insufficiency
Urinary Tract Infection (Uti)