Meet Our Team


Team Photo

  • Anna John



    In our office, there is one member of our team who is always a gentle breeze, the calm in the storm, a lighthouse on a dark night. Anna John is our dearly cherished, behind-the-scenes Practice Manager. Faithful, trustworthy, she consistently works hard with bookkeeping, marketing, and all of the administrative work involved in managing a growing practice.

    Anna and Dr. John have spent years serving the Sugarland/Stafford community and are in leadership in their place of worship, the International Bible Church of Stafford. When she is not working hard in our practice, she loves taking care of their two children, Nathan (future movie producer) and Amy (Hook ‘EmHorns).

  • Krystal Munoz



    As our Lead Dental Assistant, Krystal is the go-to person here at Advanced Dentistry. Her smile has welcomed our patients for many years. As a team, she and Dr. John have perfected their skills working hand-in-hand, striving to create perfection in the mouths of our patients.

    Krystal excels at educating our patients about the pros and cons of different treatment options. With our cosmetic procedures, she is a gifted assistant with an eye for what will best flatter each individual.

    At home, Krystal is actively encouraging her three sons to set goals, reach for the sky and do their absolute best in everything. She and her husband enjoy taking adventures as a family and creating memories together

  • Frances Sheila Roberts



    Frances, AKA “Frankie,” is our Lead Dental Hygienist. She has devoted herself to a lifetime goal of improving the oral health of patients, initially as a Certified Dental Assistant and later as a Dental Hygienist.

    Frankie is our most requested clinician ever having built incredible rapport with each person she treats, knowing their likes, dislikes, preferences, concerns. Few people in your life will really care that you are flossing and brushing regularly, but you can be sure, Frankie is someone who does care!

    She too is an amazing artist, creating magnificent cakes with different themes and designs. She also loves to be out on the water with her husband Joey, sailing away in her spare time.

  • April Marie Lopez


    April is our Hygiene Coordinator. She brings 20 years of dental experience to our practice as both a Certified Dental Assistant and Administrator.

    April is extremely knowledgeable about all aspects of dentistry and enjoys educating patients on the benefits of quality care. She works closely with our Hygiene Department to assist patients with maintaining regular preventive care as well as reviewing necessary treatment options. April’s kind and pleasant demeanor help to create a warm and welcoming environment.

    When she is not working hard in the office, you will find April cheering on her kids on the softball field.

  • Jamie Castro


    Jamie is one of our Certified Dental Assistants. He is an amazingly talented artist, having spent many years in the dental field.

    Jamie relocated from California and has experience in all aspects of dentistry, but excels in cosmetic and advanced procedures. He brings a wealth of knowledge to our practice and is very gifted at calming anxious patients.

    On his off time, Jamie enjoys working with his hands by creating works of art with different kinds of wood. He would be happy to show you some of his creations!

Our Happy Customers

"As someone who is a baby when it comes to getting her teeth cleaned, I can say that the folks at advance dentistry are amazing! Everyone there are always so kind and make what used to be miserable experience pleasant. I would highly recommend them to anyone else who suffer from teeth/gum sensitivity as I do. Also, they are really conveniently located, which is another bonus!"

Jessie S. Jessie S.

"This office is amazing!!! I highly recommend all of your family and friends to come see this brand new state of the art practice with the most friendliest staff to make you feel very comfortable 5 Star!!"

Ryan H. Ryan H.

"My experience with Dr. John and his staff is one of the most positive ones I have ever had. He and his staff treat you like a great friend. I am so grateful. He gave me my smile back as well as my confidence. I would highly recommend anyone to make your next appointment with his office. He can answer all of your questions and put you at ease. Thank you so much Dr. John and your staff. Sincerely, Nancy"

Nancy A. Nancy A.
We're here to help you get the perfect smile!
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