About Us

Serving Concord with compassionate, comprehensive dental care since 2013.

Our Story

Casa Dental Group was founded in 2013 by Dr. Katie Tran with a mission to provide exceptional dental care to the Concord community.

We believe everyone deserves access to quality dental care, which is why we offer our Casa Dental Plan for uninsured patients and a fully Spanish-speaking team.

At Casa Dental, everyone is family.

Exterior view of Casa Dental clinic with beige brick walls, a white door.

What We Believe

Family First

We treat every patient like family and create a welcoming environment for all ages.

Comprehensive Care

From routine cleanings to complex procedures, all under one roof.

Community Focus

Serving our Concord neighbors with accessible, premium dental care.

Meet the Team

Our dedicated team of dental professionals brings together years of expertise, compassion, and a shared commitment to providing exceptional care. Get to know the faces behind your smile.

Dr. Katie Tran

General Dentist

Born and raised in Concord, California, Dr. Tran has deep roots in the community. She earned her undergraduate degree at UC Berkeley and began dental school at NYU College of Dentistry at age 19. She was the youngest graduate in her class. For more than 15 years, Dr. Tran has cared for patients in New York and California, and has also taken part in dental outreach programs in Honduras. Patients appreciate her gentle touch and fun, easygoing nature, which help make dental visits feel more comfortable. Dr. Tran takes a whole person approach to oral health. She enjoys helping patients understand how everyday habits, diet, TMJ concerns, teeth grinding, and sleep can relate to their dental health. She keeps up with current research and loves sharing what she learns with her patients. Outside the office, you’ll often find Dr. Tran at the gym, trying a new recipe, or driving her kids to Brazilian jiu jitsu practice.

Dr. Dominique Pham

General Dentist

Dr. Pham was born and raised in the East Bay. She attended UC San Diego for her undergraduate degree where she earned a Bachelor of Science in General Biology as well as a post-baccalaureate at California State University, East Bay. She earned her Doctor of Dental Medicine degree at Midwestern University in Arizona in which she graduated with honors and received the Omicron Kappa Upsilon Chapter Award and International College of Dentists Student Leadership Award. Dr. Pham has done dental volunteer work in Samoa and Tonga and enjoys all aspects of general dentistry. In her free time Dr. Pham enjoys spending time with her dog and trying to find the next best thing to watch on Netflix.

Dr. Hak Kim

General Dentist with Focus in Oral Surgery

Originally from South Korea, Dr. Kim has had many years of experience in oral surgery. He completed his dental school degree in South Korea and specialized as an oral surgeon since 1996. Upon coming to the United States, Dr. Kim was one of the few candidates to be accepted into UCSF Dental School's prestigious international 2-year program where he obtained his Doctor of Dental Surgery in 2018 here in the States. He limits his practice to removal of teeth and the placement of dental implants. In his spare time, he can be found playing golf and spending time with his family of wife, twin daughters and their two dogs.

Dr. Fardad Endodontist at Casa Dental Group

Dr. Fardad Tayebaty

Endodontist (Root Canal Specialist)

We are proud to have Dr. Tayebaty serve our patients' root canal needs. He received his bachelor's degree in biology from UCLA with honors. He went on to receive his dental degree from the prestigious Harvard School of Dental Medicine where he graduated Magna Cum Laude. Dr. Tayebaty then moved to New York and earned his specialty certificate in Endodontics at the NYU College of Dentistry. Patients love him as he is able to make any root canal quick and painless. During his free time he enjoys playing soccer, hiking and spending time with his wife and their young son.

Dr. Sarah To, D.D.S.

General Dentist

Dr. Sarah earned her Doctor of Dental Surgery degree from the Herman Ostrow School of Dentistry at USC, following a double major in Human Biology and Human Development at UC San Diego and a Master’s degree in Biology with honors. She completed her General Practice Residency at Stony Brook University Hospital in New York before returning home to the Bay Area.

Dr. Sarah lives locally and calls the east bay her home. She is married to a fellow dentist, so safe to say dentistry is a big part of her world. She brings a warm, patient-first approach to general and preventive care, and takes the time to make sure every patient feels comfortable and informed.

We’re thrilled to have her as part of the Casa Dental Group team!

Dr. Cesar Macias

General Dentist

Dr. Macias, also known as Dr. Cesar, was born in Guadalajara, Mexico where he obtained his dental degree in 2001. He joined our practice in January 2013 and values whole-body approach to dental health. He loves helping others by improving their health through dentistry. Although you might not guess it, growing up Dr. Macias was afraid of going to the dentist! As a career goal he vowed to provide the most gentle and kind care to all his patients. When not at work, Dr. Macias enjoys good dinners, going to the gym, playing tennis, listening to music, and traveling.

Dr. Sandra Guereca, D.D.S.

General Dentist

Dr. Sandra Guereca has more than 20 years of experience in dentistry. She earned her Doctor of Dental Surgery degree in 1999 from Universidad Juárez del Estado de Durango (UJED) in Durango, Mexico. After moving to the United States, she completed the requirements to practice dentistry in California. Dr. Sandra believes good dentistry starts with listening. She takes time to understand each patient’s concerns, explain what she sees, and review treatment options so patients can make informed decisions and feel comfortable asking questions. She emphasizes prevention and preserving natural teeth whenever possible. Outside the office, Dr. Sandra enjoys spending time with her two sons. She also makes daily exercise and weight training part of her healthy lifestyle.