Hours of Operation

Monday and Wednesday
9:00 AM – 5:00 PM

Tuesday and Thursday
12:00 PM – 8:00 PM

Friday to Sunday

We are closed on Christmas Day, Independence Day, Labor Day, Memorial Day, New Year’s Day, and Thanksgiving Day.


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  • Lithuanian

Your Teeth are Our Business

Your smile is something you will have with you for your entire life, so it’s important to keep it healthy and shining with routine cleaning and preventative care. John F Mazeika DDS is dedicated to providing our patients in Oswego, IL with comprehensive dental services that are guaranteed to ensure a healthy smile. Don’t hesitate to call us today to schedule your first appointment! We can’t wait to hear from you and to treat you with prompt, professional care.




John F Mazeika DDS

8 E. Merchants Dr.
Oswego, IL 60543

Phone: 630-892-5577


Payment Options:

  • Checks
  • Insurance accepted
  • MasterCard
  • Payment plan options
  • Visa