Welcome to Our Practice

Welcome to Paul A. Diercks, DDS, Your Dentist in San Mateo, CA

Our team uses the latest technology and materials to make each patient’s dental visit as relaxed and pain-free as possible. We love getting to know our patients and enjoy helping them create and keep the smile of their dreams. Dr. Paul Diercks, DDS stresses patient education and believes that a patient that is educated about their oral health can make better decisions about their treatment.

We provide quality dental care, conveniently in your neighborhood and cater to your schedule. Because your comfort is important to us, we offer many of the modern amenities you’ve come to expect in a dental office. We believe that whatever your dental needs may be, you will be treated with the highest quality dentistry available and with the most compassionate, respectful care you deserve.


Infection control has always been a top priority for our practice. Our office follows infection control recommendations made by the American Dental Association (ADA), the U.S. Centers for Disease Control and Prevention (CDC), and the Occupational Safety and Health Administration (OSHA). We follow the activities of these agencies so that we are up to date on any new rulings or guidance that may be issued. We have implemented some additional procedures with the concern of COVID-19 exposure to further enhance our infection control procedures.

You may see some changes when it is time for your next appointment. We made these changes to help protect our patients and staff.

Contact Us

Send us an email today!

Meet Our Dentist


    San Mateo Dentist Dr. Paul Diercks, DDS has been practicing dentistry in San Mateo since 1998. He provides the latest treatments in dentistry including digital x-rays, cosmetic dentistry, dental implants and children’s dentistry.


Our Reviews

  • "Paul is a consummate professional and an outstanding dentist. He takes a meticulous, thorough and holistic approach to dentistry - while my first visit was a bit rough, he helped me realize precisely how to improve my oral hygiene in order to meet his high standards. Every visit afterwards was nearly painless. The guy knows what he is doing, and he is invested in every aspect of his patients’ oral health.

    He is friendly, knowledgeable and caring. I strongly recommend his services to anyone in San Mateo County seeking a dentist, and I wish he and his assistant Christy all the best!"
    JACK S.
  • "Paul is a great dentist but what sets him apart, aside from being incredibly patient and gentle, is his genuine care for your wellbeing and not just his bottom line.

    When you step into his office you are getting the attention of a person focused on your health."
  • "When I moved from Fremont to San Mateo, I decided to find a new dentist closer to my home. I randomly picked Dr. Paul from the Metlife website and I got lucky. He is always able to see me at 7:30am before I have to go to work. I’m pretty good about brushing and flossing so I’ve only had him do my exam and cleanings. I’m very happy with his services. And he always answers my questions in language I understand no matter how silly they are.

    5 stars for Dr. Paul! Love how he gives me a really good toothbrush, too!"
    MISS C.

Featured Articles

Read about helpful topics

  • Dental Implants

    If you have recently dealt with an injury or disease that affected your oral health, there are options available to recover the smile you once had. You may even be able to achieve a better smile than the one you had. Dental implants make it possible to renew your smile if you have lost some teeth. There ...

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  • Tooth Decay Prevention

    What is tooth decay? Tooth decay begins with the Streptococcus mutans bacteria. These bacteria join with food particles and fluids in the mouth to create plaque, a constantly forming biofilm which sticks to the surface of tooth enamel. The bacteria in plaque convert the sugars in our foods into lactic ...

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  • Root Canal Treatment

    Every tooth has two sections: a crown, the visible part of the tooth above the gum line, and one or more roots, which anchor the teeth within the jaw. Each tooth has three basic layers: an outer layer of hard enamel (which protects the crown) or cementum (which covers the root), a middle layer of softer ...

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  • Fillings

    The bacteria in plaque produce acids that erode tooth enamel, eventually creating a hole, or cavity, in the tooth surface. Left untreated, this decay can spread to the interior of the tooth, and might lead to the need for a crown, a root canal, or even extraction. When caught early, your dentist can ...

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  • Veneers

    A dental veneer is a thin, durable porcelain shell that is custom-fabricated to cover the front of a tooth. Veneers can restore the appearance of teeth with chips, cracks, and stains, can close small gaps between the teeth, and can reshape misshapen or slightly misaligned teeth. Veneers are a popular ...

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  • Educational Videos

    Take a few minutes to watch our educational videos and learn more about different dental treatments and procedures. Video topics include general & cosmetic dentistry, Implants, oral health and hygiene, orthodontics and preventative dentistry. ...

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  • Laser Decay Diagnostics

    Using lasers, dentists can detect tooth decay that is not yet visible and would otherwise be undiagnosed using traditional methods. Laser cavity detection is based on the fact that healthy tooth structure reflects light, or “fluoresces,” differently than does decayed tooth structure. Teeth with decay ...

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  • Laser Dentistry

    Lasers direct a controlled force of energy that can remove or alter bone and tissue. By applying varying wavelengths of energy, dental lasers are used to detect and treat a myriad of oral health issues, including detecting oral cancer and treating small cavities. There are two different types of dental ...

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  • Same-Day Crowns

    A tooth that has been structurally damaged by decay or trauma sometimes needs to be crowned or “capped” so that it can look good and function properly again. A crown is a durable covering that is custom-made to fit over the entire tooth from the gum line up. Getting a crown used to mean multiple ...

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Our Location

320 N San Mateo Dr. Suite #3 San Mateo, CA 94401

Hours of Operation

Our Regular Schedule

San Mateo Dental Office


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-12:00pm | 12:00 pm-5:00 pm By Appointment


By Appointment Only


By Appointment Only