Contact Us

Send Us An Email Today

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.

  • Jackie - Dental Hygienist

    Jackie has been a dental hygienist for 17 years. She started her career as a dental assistant and loved the field so much that she decided to become a hygienist. She has a passion for health, nutrition, and creating a warm, comfortable experience for each person in her care. Jackie and her husband moved to Phoenix from St. Louis. They have 2 grown sons.

  • Tyler - Dental Assistant

    Tyler was born and raised in Tucson and moved to Phoenix in 2015. He worked in prosthetics manufacturing for 2 years before moving to Utah. He became a dental assistant in 2017, working primarily in endodontic offices. He moved back to Phoenix in 2020 to finish prerequisites nursing school. He hopes to work as a critical care flight nurse and rescue hikers and outdoorsmen from their bad decisions.

Contact Us

Send Us an Email

Our Location

Find us on the map

Hours of Operation

Our Regular Schedule


9:00 am-5:00 pm


12:00 pm-7:00 pm




8:00 am-4:00 pm


9:00 am-5:00 pm