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John C. Mastrud, D.D.S.
"Hours Varies Bi-Weekly Please Call to Set an Appointment"
About Us
John C. Mastrud, D.D.S., in Lemont, IL, is a leading dentist serving Lockport, Homer Glen, Darien and surrounding areas since 2003. We offer teeth whitening, crowns, fillings, veneers, preventative care, TMJ treatment, dental implants, general and cosmetic dentistry, and more. For all of your dental care needs, contact John C. Mastrud, D.D.S. in Lemont.
Areas Served
Lemont, IL | Lockport, IL | Homer Glen, IL | Darien, IL | Bolingbrook, IL
Our Professional Associations
- Lemont Chamber of Commerce
What We Offer
Our Specialties include:
- General Family Dentistry
Our Services include:
- Evening and Morning Hours Available
- Implant Restoration
- General, Cosmetic and Laser Dentistry
- Cleanings
- Oral Exams
- Bridge Work
- Teeth Whitening
- Crowns
- Fillings
- Veneers
- Preventative Care
- TMJ Treatment
- Hours Varies Bi-Weekly Please Call to Set an Appointment
Testimonials
On 9/10/2025
Al Kirkus
had this to say:
In my 56 years on the planet, I’ve visited quite a few dentists. Without a doubt, Dr. Mastrud and his staff are the most caring, understanding and professional dental practitioners I’ve ever encountered. From opening his office for an unexpected dental emergency on his day off, to resolving insurance issues that other dental offices would likely have said « so sorry, but we can’t do anything to help », to being thorough enough to notice things that required additional follow up with a physician that others would likely have missed, this office is unmatched.
Dr Mastrud CLEARLY loves what he does. From my point of view I think he sees his work as a passion, not a job. It’s rare to find individuals who feel and act this way, but how lucky it is when you do! You just want to let everyone know.
I simply don’t write reviews: I think this is my first - but in his case I felt compelled to write this based on the depth of my positive experience with this group.
If you have any need for a dentist you cannot do better than Dr Mastrud and his team.
On 11/21/2024
Bryan (Joliet, IL)
had this to say:
I have been going to John for around 20 years. For me it's non-negotiable, I will not go anywhere else but to John, as long as he is in practice. John & his staff are all friendly, nice, gentle and fun! When I talk dentist stuff with friends they will often say " I want a dentist who can give service with no pain." Well today I was at his office & had 2 fillings-- no pain at all! Another thing about his office is they do it the right way. They do not over book a time slot, and make you wait an hour to get in. If your appointment is at @ 2:00, You will be called from the waiting room at 2:00. Speaking of the waiting room the facility is nice, clean, modern and is located at a safe location. If you need a dentist go here, you will be treated like family... Bryan~
On 10/7/2024
Mr. M.
had this to say:
We love Dr. Mastrud’s office ! As clients for over 10 years, we continue to be impressed with their commitment to excellent dentistry. He is very thorough and also an artist . His staff is always friendly, professional, and prompt. We are lucky to have found them. !
On 10/7/2024
Matt M.
had this to say:
We couldn't be happier with Dr. Mastrud's Office! As clients for over 10 years, we continue to be impressed with their dedication to excellent dentistry. He is both very thorough and also an artist . His staff is always professional , knowledgeable, friendly , and prompt . If you are looking for a great dentist's office - look no further.
On 6/13/2024
Kim Anderson
had this to say:
The staff at Dr. Mastrud’s office are working hard each day to meet the needs of the customers they serve. They do an excellent job.
I’ve been a customer for over 25 years!
Contact Us
John C. Mastrud, D.D.S.
15947 W. 127th St. Ste. H Lemont, IL 60439
Phone: (630) 257-2133
Email: john_mastrud_dds
127th Street Just West of the Post Office
Where To Find Us
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Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: By Appointment Only
Tuesday: 11:00 AM - 6:00 PM By Appointment Only
Wednesday: 8:00 AM - 2:00 PM By Appointment Only
Thursday: 10:00 AM - 5:00 PM By Appointment Only
Saturday: 8:00 AM - 2:00 PM By Appointment Only
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