Caring for Simi Valley Smiles Since 2007
Honest Dentistry. Personalized Care. A Practice That Feels Like Family.
At Dr. Kosta’s dental office, we believe great dentistry begins with trust. Since 2007, Dr. Konstantinos Proussaefs, affectionately known as Dr. Kosta, has been helping individuals and families throughout Simi Valley and the surrounding communities maintain healthy, confident smiles.
Our philosophy is simple: treat people with honesty, kindness, and respect. We understand that every patient has unique needs, concerns, and goals. That’s why we take the time to listen, answer questions, and explain treatment options clearly, so you can feel comfortable and confident in the decisions you make about your dental health.
From preventive care and routine cleanings to restorative dentistry, crowns, and dental implants, our practice offers comprehensive dental services for patients of all ages. Whether you’re visiting us for a regular checkup, addressing a dental concern, or looking to restore your smile, our focus is always on providing thoughtful, individualized care with your long-term oral health in mind.
What truly makes our practice special is the relationships we build along the way. Many of our patients have trusted us with their smiles for years, and we’re grateful for the opportunity to care for their children, spouses, parents, and friends. We believe that familiarity, open communication, and genuine compassion can make a real difference in the dental experience.
Dr. Kosta brings decades of clinical experience, a gentle approach, and a genuine commitment to doing what’s right for his patients. Together with our dedicated team, he strives to create a welcoming environment where patients feel heard, respected, and never pressured into treatment.
We invite you to get to know the dentist behind our practice and discover the experience and personal values that guide his approach to patient care.
We look forward to welcoming you and your family!
Call 805-526-8296A Family Dentist Who Treats You Like Family
Dr. Konstantinos Proussaefs, known to his patients as Dr. Kosta, took over this Simi Valley practice from a retiring dentist in 2007 and has cared for local families since then.
Dr. Kosta founded this practice on a simple philosophy: “Treat my patients like my own family.” That means taking the time to listen, explaining every diagnosis and treatment option clearly, and never recommending care that is not truly needed. Honesty, integrity and kindness guide every interaction in our office.
Whether you are visiting for a routine cleaning or a complex procedure, you can expect gentle, friendly care and clear communication. Call 805-526-8296 to discuss scheduling or questions about your care.
Our Approach to Dental Care
We believe the best dentistry is conservative dentistry. Dr. Kosta always tries to save your natural teeth first and only recommends treatment when it is genuinely necessary. If a filling can solve the problem, he will not suggest a crown. If a tooth can be preserved, he will exhaust every option before considering an extraction.
Clear communication is at the heart of our approach. Before any treatment begins, Dr. Kosta takes the time to walk you through what he sees, what your options are and what each option involves — so you can make informed decisions about your own oral health. There are no surprises on your bill and no pressure to accept treatment you do not understand.
This conservative, transparent approach has earned the trust of families throughout Simi Valley and the surrounding communities. Learn more about our full range of dental services or general dentistry offerings.
Comprehensive Care Under One Roof
One of the greatest conveniences we offer is the ability to receive nearly all of your dental care in a single location. Rather than referring you to multiple specialists, Dr. Kosta provides a broad range of treatments right here in our Simi Valley office.
Our services include:
- General and preventive dentistry — cleanings, exams, fillings and more
- Restorative dentistry — crowns, bridges, dentures and dental implants
- Cosmetic dentistry — veneers, teeth whitening and dental bonding
- Periodontics — deep cleanings and gum disease treatment
- Endodontics — root canal therapy
- Oral surgery — extractions and wisdom teeth removal
From your child's first dental visit to your own long-term care plan, your whole family can receive the treatment they need without the hassle of coordinating between offices.
Modern Technology for Better Care
We invest in modern dental technology because it directly benefits the patients who sit in our chair. Our office is equipped with tools that help Dr. Kosta diagnose more accurately, plan treatment more precisely and keep you more comfortable throughout the process.
Our intraoral camera captures high-resolution images of the inside of your mouth, giving you a close-up view of your teeth and gums. This technology helps you see potential concerns for yourself and makes conversations about treatment options more transparent and productive.
By combining experienced clinical judgment with advanced diagnostic tools, we are able to catch problems earlier, treat them more conservatively and help you maintain a healthier smile for the long term.
Meet Our Team
For Dr. Konstantinos Proussaefs — known to his patients as Dr. Kosta — dentistry is about much more than healthy teeth. With more than 25 years of experience, he brings clinical expertise, a gentle approach, and a genuine passion for caring for his patients.
Dr. Kosta is supported by Nicole, our Registered Dental Hygienist. Together, they help patients feel welcomed, heard, and never rushed.
Conveniently Located in Simi Valley
Our office is located at 1445 E. Los Angeles Ave., #300, Simi Valley, CA 93065, right on East Los Angeles Avenue with convenient access for families throughout the Simi Valley area.
Office hours: Monday through Friday, 7:00 AM – 4:00 PM. We are closed on Saturday and Sunday.
We know your time is valuable, which is why we offer early morning appointments and work hard to stay on schedule. Whether you are dropping by before work or fitting in a visit during your lunch break, our hours are designed to accommodate busy families.
Ready to schedule? Call 805-526-8296 or visit our contact page for directions and additional information.