Our Mission
Friendly Care Close to Home
Williams Dental Care and Westgate Dental Care are proud to serve the communities of Williams and Woodland, CA, with compassionate, affordable dental care for the whole family. From preventive cleanings to dental implants, our team is here to support your smile at every stage of life.
Dr. Quintana and Dr. Reyes bring warmth, expertise, and a patient-first approach to every appointment. Our team is proud to offer care in both English and Spanish, so every patient feels at ease.
We are currently welcoming new patients at both of our offices! Call our office or request an appointment to schedule your first visit with our team.
Dr. Yvan Carlos Quintana Castrillon
Dr. Yvan Carlos Quintana Castrillon is a dedicated dentist and the owner of Williams Dental Care and Westgate Dental Care. He earned his dental degree from the prestigious University of Buenos Aires in June 2009 and has been committed to providing exceptional dental care ever since.
Fluent in both English and Spanish, Dr. Quintana Castrillon takes pride in serving a diverse patient population and ensuring that every patient feels comfortable, informed, and confident throughout their dental treatment. His patient-centered approach focuses on building lasting relationships based on trust, compassion, and open communication.
In 2015, Dr. Quintana Castrillon founded Williams Dental Care with the vision of creating a practice where patients receive high-quality, comprehensive dental care in a welcoming and family-friendly environment. Through his leadership, both Williams Dental Care and Westgate Dental Care have grown to become trusted providers of preventive, restorative, cosmetic, and emergency dental services.
Dr. Quintana Castrillon is passionate about helping patients achieve and maintain healthy, beautiful smiles through personalized treatment plans and the latest advancements in dental technology. His commitment to clinical excellence and patient satisfaction continues to guide the mission of both practices.
When not caring for patients, Dr. Quintana Castrillon enjoys spending time with his family, staying current with advances in dentistry, and giving back to the communities he proudly serves.
- Languages Spoken: English and Spanish
- Dental Degree: Doctor of Dental Surgery, University of Buenos Aires (2009)
- Practice Founder: Williams Dental Care (2015)
- Practice Owner: Williams Dental Care & Westgate Dental Care
Dr. Francisco Reyes
Dr. Francisco Reyes is a dedicated general dentist with several years of clinical experience providing comprehensive dental care with a strong focus on patient comfort, precision, and long-term oral health. He is experienced in diagnosing and treating a wide range of dental conditions and is committed to delivering high-quality, personalized care for every patient.

His clinical experience includes restorative dentistry, cosmetic procedures, deep cleanings, crowns, fillings, root canal treatments, and surgical extractions, including wisdom teeth extractions and other oral surgery procedures. Dr. Reyes emphasizes thorough diagnosis, attention to detail, and clear communication to help patients feel informed and confident throughout their treatment.
Known for his professional yet approachable style, Dr. Reyes believes in creating a welcoming environment where patients feel comfortable and genuinely cared for. He is passionate about improving oral health while helping patients achieve healthy, functional, and confident smiles.
Dr. Reyes stays committed to continuing education and modern dental techniques in order to provide efficient, up-to-date treatment options tailored to each patient’s individual needs.
Office Amenities
Your Comfort is Our Priority
We want every visit to feel as comfortable and stress-free as possible. Our offices are designed with your ease in mind, so you can relax from the moment you walk in.
Our offices feature:
- Comfortable waiting areas with TVs
- Free Wi-Fi
- Educational brochures
Financial Options
Easy & Affordable Payment Options
We accept most traditional insurance plans and are in-network with Delta Dental. We are happy to answer any questions you have about your coverage.
No insurance? No worries!
We offer flexible financing options through Cherry and CareCredit, as well as in-house payment plans, so cost never has to stand in the way of a healthy smile.