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805-526-8296

WELCOME TO KOSTA SMILES

Family & Cosmetic Dentistry in Simi Valley, CA

We believe great dentistry is about more than healthy smiles — it’s about people.

Our team takes the time to listen, understand, and create care that’s designed for your long-term health and confidence.

From routine care to full-arch dental implants, advanced cosmetic treatments, and same-day solutions, you’ll find comprehensive dentistry in a relaxed, welcoming environment.

Call 805-526-8296
Inside the Kosta Smiles dental office in Simi Valley

Personalized Care

Treatment built around your goals.

Family-Focused Dentistry

Care for every stage of life.

Multilingual Team

English, French, Greek, and Spanish.

Comfortable Experience

Gentle, welcoming care in Simi Valley.

Dr. Konstantinos Proussaefs, dentist at Kosta Smiles in Simi Valley

WELCOME TO KOSTA SMILES

Comprehensive Carefor a Lifetime of Smiles

At the dental office of Konstantinos Proussaefs DDS Inc., we love helping our patients discover a healthy, beautiful smile. Our practice is a family business, and Dr. Proussaefs provides comprehensive dental care for patients of all ages with team members who speak English, French, Greek, and Spanish.

We proudly welcome families from across the Camarillo-Simi Valley area, including Moorpark, Oak Park, Thousand Oaks, and Chatsworth. Call or visit us today to set up your next appointment — we are eager to see you!

  • Personalized Care

    We take the time to get to know you and your goals.

  • Comprehensive Dentistry

    From preventive care to advanced treatments.

  • A Comfortable Experience

    A relaxing environment for patients of all ages.

COMPREHENSIVE CARE

Dental Services Designed Around You

From preventive care to advanced treatments, we offer comprehensive, conservative, and personalized dentistry for every stage of life.

View All Services

REAL RESULTS

Beautiful Smiles. Life-Changing Results.

We are dedicated to helping our patients achieve healthy, beautiful smiles. Check out our smile gallery to see some of our work!

  • After Porcelain Veneers treatment
    Before Porcelain Veneers treatment
    BeforeAfter

    Porcelain Veneers

    A brighter, more confident smile with natural-looking results.

  • After Dental Crowns treatment
    Before Dental Crowns treatment
    BeforeAfter

    Dental Crowns

    Rebuild and protect your smile with durable, natural-looking crowns.

  • After Full Restoration treatment
    Before Full Restoration treatment
    BeforeAfter

    Full Restoration

    Comprehensive care that transforms both function and appearance.

  • After Dental Implants treatment
    Before Dental Implants treatment
    BeforeAfter

    Dental Implants

    A long-term solution that looks, feels, and functions like natural teeth.

View More Smile Transformations

PATIENT REVIEWS

What Our Patients Say

See what our patients have to say about us! We are committed to providing each patient with an exceptional dental experience.

4.9 out of 5 — based on 525+ patient reviews

Dr Kosta's has worked on my teeth for several years now. He's a great surgeon. I've never had any post dental procedure or surgery problems. He's quick and thorough. I completely trust him. The staff are friendly and thorough. There is no long wait, they take you in right away. I recommend Dr. Kosta Dental office to any one.

Christine Z.

Patient

From the moment my wife and I walked in we felt welcomed. The staff is all super friendly as is Dr. Kosta. My wife and I both have severe dental anxiety and Dr. Kosta and his team put us at ease. Dr. Kosta is also gentle, and explains everything clearly before doing anything. I cannot recommend this office enough!

Brandon G.

Patient

Dr. Kostas is a great dentist who is always honest and transparent with his patients. He genuinely cares about your oral health and takes the time to explain everything clearly. I've always felt comfortable during my visits and never once felt misled or taken advantage of. I highly recommend his office. It's rare to find a dentist who makes you feel this at ease both financially and personally.

Valerie

Patient

Dr. Kosta has been my dentist for the last 6 years. I have always had a great experience when I visit his office. I love the entire staff — they are so warm, caring and friendly! I have never had a problem with making an appointment or having a long wait in the waiting room. I would highly recommend Dr. Kosta's Dental Office for all your dental needs!

Debbie G.

Patient

I have been a patient of Dr. Kosta for years. He is the best dentist I have ever been to. He is a great dentist and a wonderful person. He and his entire staff provide a welcoming environment so I enjoy going to the dentist.

Christy D.

Patient

The staff is friendly and helpful from the moment you walk inside the door. Dr. Kosta is extremely friendly, helps you understand any issues occurring orally, and applauds those who take care of their dental hygiene. I recommend this office to anyone I know looking.

Lindsay W.

Patient

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READY TO GET STARTED?

Your Healthier, Brighter Smile Awaits

We’re here to provide compassionate, comprehensive dental care for you and your family.

Confident woman with a bright smile