720 Olive Way Suite 835
Seattle, WA 98101

Your health, your teeth,
and your comfort are
our priority

About us

Mark Germack Endondist in Downtown Seattle

Mark Germack DDS


I was born and raised in Spokane, Washington. Like any young kid I had dreams of being a point guard for the Sonics. At the age of six I figured out that wasn’t going to happen and I set my sights on becoming a dentist.

I made it to Western Washington University and was committed to becoming a dentist. I graduated with a degree in Cellular and Molecular Biology and was then accepted to the dental school at Marquette University. After dental school, I returned to Washington where I owned a successful general practice in Issaquah for 10 years.

Having experienced some episodes of extreme dental pain myself, I could always relate to patients who were in distress. Even though I had a great practice I felt compelled to practice endodontics and surgery. I decided to apply and was accepted into the residency program in Endodontology at the prestigious Oregon Health and Science University.

During that time my research focused on antibiotics and the prescribing habits of dental practitioners. Our research was published in the Journal of Endodontics and was used to help develop the most recent presiding guidelines for dental infections.

We are very excited to be a part of the dental community in downtown Seattle and are sincerely here to be a resource for our patients and referring providers.

Traditional root canal therapy can be stressful and overwhelming.  I want to change that.

Seattle Top Dentist root canal specialist

Stephanie Chen DDS

Board Certified Endodontist

I was born in Dallas, Texas and raised in Taipei, Taiwan. I have always been creative but with a passion for the sciences, dentistry is the perfect combination of both. I received my Doctor of Dental Surgery degree from Taipei Medical University and a certificate in general practice residency training from Chang Gung Memorial Hospital. After practicing for four years as a general dentist, I decided that specializing in Endodontics was truly where my passion was. I was lucky to return to the United States and complete an advanced specialty training program in Endodontics at the University of Pennsylvania.  I am also proud to have received the distinguished honor of becoming one of the only Board Certified Endodontists in the greater Seattle area.

During my time at UPenn, I taught microendodontic techniques such as those for apical surgery to visiting endodontists from around the world. My research in bioceramics earned recognition as one of the top research projects at the American Association of Endodontics national meeting.

In my free time, I love working out (fitness training), playing tennis, painting and photography. After having traveled around the world, it was the breath-taking sights of Washington State that captured my heart and brought me to Seattle.

At CORE Endodontics, we strive to treat all patients with genuine compassion, while minimizing dental anxiety and discomfort throughout the entire visit. With the patient and the General Dentist in mind we offer Comprehensive, Restoratively-Driven Endodontics.

We sincerely look forward to continuing to provide you and your patients the very best experience when working with our office.

Our Team

Ranita our awesome dental assistant in our downtown Seattle endodontic office


Dental Assistant

I spent several years caring for children which I loved tremendously. I decided to make a change to dental assisting, because I have always loved teeth and thought it would be a great opportunity to marry two of my passions, being a nurturer and helping patients care for their teeth.

Our awesome dental assistant Rachel in our endodontic office in downtown Seattle.


Dental Assistant

I have always been passionate about working in the medical field.  I really enjoy having the opportunity to help people feel comfortable, welcomed and cared for.  My passions are focusing on the patient experience and improving their health and well-being.

Keya, our dental assistant in our downtown Seattle endodontic office.


Dental Assistant

Dentistry is something I have always been passionate about.  From my childhood I have always loved to care for people.  It gives me great joy to comfort others.  I love to educate my children on great oral hygiene.  Dentistry has always been a part of my life!

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