About Our Doctors

  • Dr.
    Colin Ilas

    Dr. Colin Ilas has been providing state-of-the-art dentistry with a gentle and caring touch for young children and adults since 1990. He received his dental degree from the University of the East in Manila, Philippines. To stay up-to-date on the latest advancements in the field of dentistry, Dr. Ilas maintains memberships with the American Dental Association, California Dental Association, Santa Clara Dental Society, CEREC Study Club and the Academy of General Dentistry.

    Dr. Ilas and his wife, Lorelei, have been married since 1987 and have been blessed with four amazing children: Calvin, Trisha, Coby and Trixie. He enjoys traveling and dedicates whatever free time he may have to his wife and children, whether it be watching movies, dining out or spending quality time with the kids. Aside from dentistry, his other passions include architecture and landscaping.

  • Dr. Latrisha Ilas

    Dr. Trisha is a Bay Area native and second-generation dentist. She has grown a passion for dentistry ever since she was a little girl. You may recognize her in the past when she was a dental assistant for Dr. Colin Ilas during her high school and college years. Dr. Trisha received her Doctorate of Dental Surgery (DDS) degree from the world-renowned University of the Pacific Arthur A. Dugoni School of Dentistry in San Francisco, CA, where she was Class President of her DDS class. Dr. Trisha stays up-to-date in dentistry as an active dental member of the American Dental Association (ADA), California Dental Association (CDA), and Santa Clara County Dental Society (SCCDS).  

    You can find Dr. Trisha treating patients at both San Jose and Concord locations. Dr. Trisha believes in providing quality comprehensive dental care while caring for the patient as a whole - their oral health and overall health. She is known for her light and gentle hands, attention to detail, and thorough explanations. Outside of dentistry, Dr. Trisha enjoys traveling, eating out (she’s a big foodie!), shopping, and spending time with her loved ones and 5 dogs. 

  • Dr.
    Juan Diego Sahagun

    Dr. Juan Diego Sahagun was raised in the Delta River area of the San Joaquin Valley, where he graduated from the University of the Pacific in 1982. He earned his Doctorate of Dental Surgery degree from Loyola University of Chicago School of Dentistry in 1992 and then moved to San Jose where he opened his private practice.

    In 1993, he married the most big-hearted, wonderful lady, Ferial Bagha, D.D.S., a classmate from dental school. They have two children: Arshome and Atehsa.

  • Dr.
    Michael Tancio

    “I love taking care of my patients! Dentistry has been truly rewarding by providing me the ability to take care of patients utilizing art, cutting-edge dental science, and technologies… more importantly, it’s allowed me to improve my patients’ quality of life!”

    Dr. Tancio has been practicing for 20 years. His dental philosophy provides patients with an individualized, comprehensive dental plan to help them attain optimum oral health harmonious with their overall well-being.

    He graduated from the College of Dentistry, Centro Escolar University and actively keeps abreast on the latest trends. He has also attended the acclaimed Dawson Academy for Advanced Dental Studies and his clinical strengths are in functional occlusion and dental cosmetics. He is an active member of the American Dental Association, California Dental Association and the Southern Alameda County Dental Society. Dr. Tancio is a veteran having served in the U.S. Air Force Dental Service. He has also served as a Clinical Director and on a Dental Board for a large dental corporation for over 10 years.

    He loves to spend time with his family and friends through gatherings and trips. He is an avid San Francisco Giants, 49ers and Warriors fan! He also enjoys playing sports and photography when time permits.

  • Dr.
    Roger Sanding

    Bio coming soon.

  • Dr. Theresa Herrera

    Bio coming soon.

Contact Us

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Our Locations

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Hours of Operation

Our Regular Schedule

Concord Office

Monday:

10:00 am-7:00 pm

Tuesday:

Closed

Wednesday:

10:00 am-7:00 pm

Thursday:

10:00 am-7:00 pm

Friday:

10:00 am-7:00 pm

Saturday:

9:00 am-5:30 pm

Sunday:

Closed

San Jose Office

Monday:

9:00 am-7:00 pm

Tuesday:

9:00 am-7:00 pm

Wednesday:

9:00 am-7:00 pm

Thursday:

Closed

Friday:

9:00 am-7:00 pm

Saturday:

9:00 am-5:30 pm

Sunday:

Closed