About
Viesselman John O MD, a trusted Doctor in Fontana, CA, provides top-notch medical care to patients of all ages. With a convenient location at 9310 Sierra Ave., Fontana, CA 92335, our office is dedicated to delivering personalized health services in a comfortable and welcoming environment. As a reputable Doctor, Dr. Viesselman and his team strive to build long-term relationships with their patients, taking the time to listen to their concerns and develop effective treatment plans. Whether you're seeking routine check-ups, preventive care, or treatment for a specific condition, our experienced Doctor is committed to providing exceptional care that meets your unique needs. Contact us today to schedule an appointment and experience the difference that compassionate, patient-centered care can make.
Wheelchair accessible entrance 
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