About RDC Dental

About Dr. Peter Riordan

Meet Your Local Dentist

Dr. Peter Riordan

Dr. Peter Riordan’s expertise in dentistry is unsurpassed by his concern for his patients.

As an experienced dentist, his extensive knowledge within the field of dentistry allows him to effectively diagnose and treat your dental needs.

Dr. Riordan’s mission is not just to clean your teeth and provide you with a treatment plan, but to get to know you and help you achieve your dental goals.

He will clearly define your dental options and walk you through every step from your initial consultation, to long after your treatment plan is complete.

Did You Know We Provide Financing?

Complete Services

We truly are your one-stop-dental-needs shop.

Judgement Free

We're here to help and no one will criticize you.

Everyone's Welcome

We're all about maintaining an inclusive environment.

Simple Billing

We're connected to all of the major insurance companies.

We're Accessible

We doesn't our clinic with your comfort in mind.

Free Private Parking

Forget about street parking, fees, tickets & long walks.

Free WiFi

Fast & free, use our office WiFi and save your data.

We're Open Late

You can schedule convenient evening appointments.

We've Been Serving Oshawa & Durham Region Since 1958

As one of the oldest dental clinics in Oshawa (and Durham Region), we have been serving families for decades.

Family owned and operated, my father originally opened “Riordan Dental Care” 1958 and we have been successfully serving families like your own ever since.

My sister and I eventually joined the practice – and our dad – and worked with him for years until he retired. We’ve always enjoyed working with local families and being an important part of their dental health.

These days, a lot of our patients are the children of people my dad used to care for and we look forward to continuing all of our relationships well into the future.

At RDC Dental Care

You’re In Good Hands

At RDC Dental Care, we provide our patients with not only gentle and effective dental work, but the knowledge that they are in the hands of true professionals.

Our team of dental experts all have extensive training and experience in all forms of dentistry and we provide emergency dentistry services at our Oshawa dental office as well.

Whether you are coming in for a general cleaning, or more advanced procedures like Mini Dental Implants or Invisalign Clear Aligners, you can rest assured that our team is more than prepared to handle your case.

Your comfort is our number one concern, and we will make every effort to address any of your concerns and calm your fears going into your treatment.

The quality dentistry we provide is an investment in your health, appearance and well being.

About Riordan Dental Care Oshawa

View Our Office Below


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Riordan Dental Care Oshawa Ontario

Driving Directions:

Located in Oshawa, Ontario, we are on the east side of Simcoe Street North, just south of Beatrice Street East and north of Sunset Drive.

If you are driving south on Simcoe, continue past Beatrice Street and Liz’s No Frills (you’ll see it on your right side). We are just past that plaza, on the left (east) side.

If you are driving north on Simcoe Street, go past the Long & McQuade Musical Instruments store (on your left) and the Petro Canada gas station (right side).

The next street on your left will be Sunset Drive (where the Shell gas station is) and we are just past that intersection, on the right (east) side.


Free parking is available on the south (right) side of the building.

Public Transit:

You can take the Simcoe Street Northbound or Southbound bus.

Both directions have stops at Sunset Drive, just south of the clinic.

The Simcoe Southbound Bus Stop ID is: 715

The Simcoe Northbound Bus Stop ID is: 686

Please visit the Durham Region Transit website’s schedule page for routes, fares and times.


The clinic is fully accessible.


You can call the clinic during regular business hours or leave a message if we aren’t able to take your call.

Our Service Areas:

Oshawa Neighbourhoods: