Serving Beloit and surrounding areas

Contact John G Onderak, DDS - Beloit, WI | 608-363-9400
Dental service

If you’re looking for a friendly, professional and reliable dentist in or around Beloit, there is no better name to trust than John G Onderak, DDS. Call us to make an appointment today.

John G Onderak, DDS

1215 Cranston Road

Beloit, WI 53511


608-363-9400 ask for John

Fax: 608-363-9837



Monday 8:00 AM - 6:00 PM Tuesday 8:00 AM - 12:00 PM Wed to Fri 8:00 AM - 5:00 PM

Saturdays - Seasonal

Business Hours

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Rock County Dental Society

ADA Wisconsin Dental Association