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Meet the Staff

All professionals at Renuka Kumar DDS maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

  • Sandra Cortez - Office Manager

    Sandra began her career in the dental field as an assistant and worked her way up to becoming an office manager. She has over twenty years of experience in the dental field. Sandra is the first face you will see at Dr. Kumar's office and loves interacting with patients both on the phone and in person. She will explain your dental insurance benefits and financial options and answer any questions you may have. Sandra has enjoyed getting to know Dr. Kumar's patients personally over the years.

    When she is not helping patients, Sandra enjoys spending time with her husband and two sons. They also own two dogs (a German Shepherd and a Labrador mix) as well as a rescued desert tortoise. 

  • Denise Crum - Dental Hygienist

    Denise began her career as Oral Surgical Assistant and found that she loved Dentistry so much that she went back to school to become a Dental Hygienist. She has been a Dental Hygienist since 1986. She loves working with people and developing relationships and enjoys educating them about oral health. She is the devoted mom of 3 children. She also volunteers her skills as a Hygienist at an orphanage in Mexico. She is active in her church and loves to ride motorcycles.

  • Nancy - Dental Hygienist

    Nancy has been in the dental field for the past 18 years. She started out as a dental assistant and enjoyed her work so much that she decided to go to dental hygiene school. She likes to think of teeth as pretty little pearls and loves to make them shine! She is an expert at making her patients feel comfortable and educating them about oral health. In her spare time, she likes to hike, read, write, bake and spend time with her family.

  • Laura Zito - Dental Hygienist

    Laura has been a Hygienist since 2013 when she graduated from Northern Arizona University. She loves taking care of her patients’ teeth and helping them improve their oral health! Laura prides herself on being thorough with a gentle touch, and ensures that each patient feels comfortable during the appointment. She is mom to two young daughters who are her pride and joy. She enjoys watching movies with her family and reading fantasy novels. 

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Hours of Operation

Our Regular Schedule


9:00 am-5:00 pm


12:00 pm-7:00 pm




7:00 am-4:00 pm


9:00 am-5:00 pm