Welcome to Our Practice

Welcome to Cornwall Family Dentistry. Cornwall Family Dentistry proudly features a state of the art dental facility that is specifically designed to deliver outstanding dental care using the latest and best in dental technologies.  Our experienced and dedicated team is committed to creating an environment that is both comfortable and caring.  We believe in delivering quality care, and developing long-term relationships with our clients.   We look forward to meeting you and working with you to achieve the smile you desire! 

Our staff is dedicated to giving our patients the very best care dentistry has to offer. We do this by continuing our education and keeping up with the latest developments. We believe in giving our patients a comfortable office. We want you to be comfortable talking to anyone on our staff. We are there to answer your questions. It is our goal to give you a friendly and professional atmosphere so you are comfortable coming to your dentist.

Meet Our Doctors

Learn Who We Are

  • Dr.
    Richard Koslowski DMD

    Dr. Koslowski has practiced in Lebanon County for almost 30 years. He began his pathway to dentistry and perfect smiles by graduating with a Bachelors of Arts from the University of Pittsburgh. He received his Doctorate in Dental Medicine in 1991 from the University of Pittsburgh. He moved to the Lebanon area and joined Dr. Donald Gigler where he took over the practice in 1992. At the end of 2015, he changed the practice into a group, Cornwall Family Dentistry, and moved to 850 Norman Drive where it is located today. Dr. Koslowski has been a member of the American Dental Association and the Pennsylvania Dental Association for over 30 years.

    Dr. Koslowski is known for being very personable and has an astute sense of humor. He takes pride in providing patients with high quality work and fair practices. He has supported countless charitable organizations and believes in giving back to his community. Recently his family was honored to fund and co-host Jay Day for a few years until it was moved to Arizona to stay in the Silverman Family name.

    Dr. Koslowski married his college sweetheart, Ann Marie and they have two wonderful children, Zachary and Hallie. He enjoys watching football (especially the Pittsburgh Steelers), studying history, playing
    guitar, golfing and spending time with his family which includes playing with the family dogs, Bruno and Toby.

  • Dr.
    Kasey Thomas

    Dr. Thomas is a Lebanon County native who graduated from Cedar Crest High School. She received her Bachelor’s degree in biology from the University
    of Pittsburgh. She graduated Summa Cum Laude receiving her Doctorate of Dental Medicine from The Kornberg School of Dentistry at Temple University. She is currently a member of the American Dental Association, the Pennsylvania Dental Association and the International Academy of Facial Aesthetics. In addition to general dentistry; Dr. Thomas provides neurotoxin treatments to enhance aesthetics and functionality of the head and neck.

    Dr. Thomas is happy to have returned to her hometown community to treat patients, She knew she wanted to be a dentist since she was 12 years old. 

    While pursuing her degrees, she began an internship at Cornwall Family Dentistry in 2016 to begin preparing for her career.

    In her free time, Dr. Thomas enjoys spending time with her family, cooking, reading, and taking road trips.

  • Dr.
    Ryan Walters DMD

    Dr. Walters is a highly energetic and enthusiastic professional with a deep passion for providing tailored dental care to his patients.

    Dr. Walters received his Bachelor of Science from Providence College in 2013, and his Doctorate of Dental Medicine from Temple University School of Dentistry in 2018. Following the completion of his dental degree, Dr.
    Walters joined Cornwall Family Dentistry in the summer of 2018. He is currently a member of the Pennsylvania Dental Association, the Academy of General Dentistry, the American Dental Association, the American Academy of Cosmetic Dentistry and the International Congress of Oral Implantologists.

    In keeping with his belief of giving back to the community, Dr Walters has provided dental care to those in need through serving others on a mission
    trip to Haiti, donating his time to support Jay Day in our own community, as well as volunteering with the MOM-N-PA dental missions.

    Dr. Walters is committed to providing the highest level of dental care through the combination of science and artistry. He believes in working with each individual patient to build a trusting. relationship and provide
    tailored care that fits the needs and lifestyle of each patient.

    On a personal note, Dr. Walters resides in Lititz with his wife and two dogs. As a former collegiate athlete, Dr. Walters enjoys many outdoor activities including skiing, golfing, surfing, and hiking with his wife, two beautiful boys and two pups!


What Our Clients Say About Us

  • "Many thanks to Dr. Walters and Lauren for taking care of my dental distress on Monday. Dr. Walters explains everything he is doing as it is happening. Great care from both of them."
    Anne Brubaker
  • "Beautifully remodeled office & technology with the warm and caring dental staff. Dr. Koslowski & his team are some of the most professional staff I’ve ever met – The best office in the county that truly cares about each & every patient. As a hygienist I am very lucky to be here."
    Lindsey Marie
  • "My family loves Dr. Silverman! Lindsay does a great job cleaning my teeth!"
    Lisa Allison
  • "I by no means iam a fan of any dentist. This staff knows my anxiety level goes through the roof, and are always no nice and friendly with helping me get through my visits."
    May Mosteller
  • "Dr. Richard Koslowski has built a practice based on excellent professional care. The technology they employ is very patient friendly and minimally invasive. However, what sets this practice apart is the kindness with which they treat their patients. The entire staff is professional and courteous. From the waiting room to the exam chair your entire family will feel comfortable and secure in the capable hands of this practice."
    Christine Leonard-Strunk
  • "Wonderful staff, great facility, and Dr K is by far the best doc I've ever seen!"
    Michael Murphy

Featured Articles

Read about helpful topics

  • Bridges

    When you lose a tooth, it affects not just the appearance, but the function of your smile. It can be difficult to eat or speak naturally, extra stress is put on your remaining teeth, you’re at greater risk for developing gum disease, your remaining teeth can shift out of position causing bite problems, ...

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  • Orthodontic Retention

    Getting your braces off is definitely a cause for celebration. You can finally enjoy your new smile after all that work and effort! But getting your braces off isn’t the end of treatment. Once your braces come off, you will enter the retention period of treatment. During the retention period, you will ...

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  • Inlays and Onlays

    Inlays and onlays are indirect restorations used to repair molars and premolars damaged by decay or trauma. Inlays and onlays fit more securely and last longer than fillings, strengthen compromised teeth, and preserve more natural tooth structure than crowns. An inlay is used to restore the center of ...

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  • 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 ...

    Read More
  • 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 ...

    Read More

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Our Location

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Hours of Operation

Our Regular Schedule


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm