About Dr. Diane E. Casey

General Dentist & Family Dentist

Diane Casey, DDS, is a skilled general dentist known for her positive chairside manner and exceptional services at her private practice in Sunnyvale, California. Dr. Casey is a long-time resident of Santa Clara Valley and is proud to have served the local dental community for over 30 years.

Dr. Casey received her undergraduate degree in biochemistry from UC Berkeley in California. She went on to earn her Doctor of Dental Surgery degree from Creighton University in Omaha, Nebraska. She brings her extensive educational background to help patients resolve their dental needs.

With more than 15 years of experience in multi-dimensional dental services, Dr. Casey provides the latest care available in dentistry. In addition, she is a liaison to Community Relations and Membership Committees and an SCCDS delegate to CDA House of Delegates.

Dr. Casey stays active in her field and maintains membership with the American Dental Association, the California Dental Association, the Santa Clara County Dental Society, and the American Academy of Cosmetic Dentistry.


Words from our patients

  • Google

    "Highly recommend to all my friends and family! Thank you for taking good care of me always."

    Debbie A.
  • Google

    "Diane is always available for any kind of problem or issue, she called right away for my cleaning after her office opened up."

    Meta C.
  • Google

    "Dr Casey is an excellent dentist. When she gets down to work she fixes everything at once I love the results. I would highly recommend Dr Casey"

    Debbie Z.
  • Google

    "The absolutely best dentist ever! We have been seeing Dr Casey for about 25 years and recommend her to everyone we know."

    Susan F.
  • Google

    "Dr. Casey and her team were great — very personable and helpful. Provided great feedback and tips on how to better take care of my teeth."

    Andrew E.
  • Google

    "Dr Casey was extremely knowledgeable and solved my dental problem. The office was very nicely decorated...."

    Cynthia G.
  • Google

    "I take my kids here and they make them feel so comfortable that they leave asking when is the next visit."

    Catherine B.
  • Google

    "She has treated everything, regular teeth clean, filling, Invisalign, retainers , emergency. I highly recommend Dr. Casey ."

    Dora E.


Diane E. Casey, DDS
877 West Fremont Avenue, Suite D3
Sunnyvale, CA 94087
Phone: 408-528-2956
Fax: 408-736-3883

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