About

Dr. Diane Casey has more than 15 years of experience in multi-dimensional dental services. Dr. Casey is a long-time resident of Santa Clara Valley and was the president of Santa Clara County Dental Society in 2008. Dr. Casey is also a proud member American Dental Association, California Dental Association and American Academy of Cosmetic Dentistry which shows her dedication and passion in the field of dentistry.

Education & Certifications
education DDS Creighton University School of Dentistry
certification Dental Board of California Jul 21, 1988
Verified Patient Reviews
Based on 17 reviews across 2 sources
5.0 /5
Staff 5.0
James D. Checkmark Verified Patient

Very thorough and professional. Absolutely fantastic visit. She tells you where your teeth are in detail and provides tailored recommendations.

Reviewed on November 5th, 2024

Jordon H. Checkmark Verified Patient

Great, professional service! Dr. Casey changed my dentist experience by considering my goals for my smile even though I was in for a routine cleaning. Recommendations and fun conversation were not something I expected during my visit.

Reviewed on January 6th, 2024

Rahul M. Checkmark Verified Patient

Okay

Reviewed on August 9th, 2023

Aadhar J. Checkmark Verified Patient

Dr. Casey and the staff were very friendly and easy to talk to - however they were short staffed on the day of my visit and the wait was therefore quite long. The whole setup didn't seem extremely professional but Dr. Casey seemed very knowledgeable.

Reviewed on July 5th, 2023

Sonal J. Checkmark Verified Patient

Overall service was good.

Reviewed on May 31st, 2023

Srikanth V. Checkmark Verified Patient

Feel good response and easy procedure for oral cleaning.

Reviewed on March 4th, 2023

Xochitl B. Checkmark Verified Patient

Signing up was quick and the online instructions were simple. Finding a dentist in my area was easy. My dentist was friendly, patient, and knowledgeable.

Reviewed on January 30th, 2023

Christine H. Checkmark Verified Patient

Dr. Casey was fantastic. I have some dental issues to address, and she did not make me feel ashamed about my teeth at all. She also took time to explain my care options in detail. I recommend her highly.

Reviewed on January 27th, 2023

Saurav P. Checkmark Verified Patient

Doctor did a great job on my cleaning. She explained the steps and care plan needed for me.

Reviewed on September 20th, 2022

PRABHAT J. Checkmark Verified Patient

very experienced dentist, did a great cleaning and answered all questions with options

Reviewed on August 10th, 2022

Sayantan D. Checkmark Verified Patient

She is really caring and shares information with patients (like me ☺️) and so far after taking her service I’m doing good! She guided me for best care possible for my teeth and gums! I really appreciate her service and the cleaning she did today with utmost care! Thank you Dr. Casey

Reviewed on May 4th, 2022

Siddhartha S. Checkmark Verified Patient

Very professional, patient and kind doctor. Took time and explained everything in detail and made sure to answer even the smallest questions.

Reviewed on July 7th, 2021

Dr. Casey has been our family dentist since last year. We are very pleased with her services, and are glad that we found her. Her office is located close to where we live in Sunnyvale (even if it wasn't close, we'd still travel to see her). She is always pleasant and calm, both with adults and kids. Our 11-year-old is not scared about seeing the dentist at all; he enjoys talking to Dr. Casey and having her take care of his teeth and getting his goody bag at the end of the visit. She is attentive and thorough and doesn't rush us out the door. Last but definitely not the least, we feel that we can trust her care and her recommendations, and feel that she wouldn't recommend things we don't need just to make more money. We are planning to keep coming back.

Reviewed on June 9th, 2018

I can't even express my appreciation for Dr. Casey....which she may not always feel as I try to get out of the door as soon as possible. As a child I always had a hard time getting numb and I was terrified as a child of going to to dentist (soft teeth, etc, cavity prone), that I was in for torture, and I mean that. I still remember shaking, crying begging for my mother, unable to express how I was feeling. I would throw out the appointment reminders before she checked the mail, delete the messages of dental reminders until my mom finally had to have them call her own office. I eventually left my "child" dentist and did the usual thing, went to the dentist my mother sees. He would give me the shot of Novocaine would shake, cry, convulse in pain and tell him I could feel it all. He would give me more shots, and then continue, and when I begged him to stop he said I've given you too much already and we need to get this done. I thought maybe my previus fears were from before, and it was my adrenaline causing the shots to not work. He offered gas, but by this point my phobia was so bad, I would vomit immediately when it was out on. The ONLY thing that got me through those years was this wonderful assistant who knew me as one of her sons friends. The last syraw was when my mom called in saying I was on my way (18 at the time) and I was dealing with major anxiety. Afterwards the guy at the front laughed at me, and offered me a toy. I never went back after that, I felt humiliated. After this is I went 10 years without dental care. I just couldn't imagine the pain anymore. The pain in my mouth constantly was better than being in that chair. I tried self help groups, I tried message boards. I flew to Hawaii in desperate need for a root canal, but finally the root died, and I felt some relief. Of course never mentioning any pain, for the phobia I now had. The final straw came at a Christmas party for work, that same tooth, hurt so bad, I went to thr bathroom and did jumping jacks to have blood rush to my face, which gave me some relief, along with putting my head down to have the blood rush to my face. This was my lowest point. When you have such a bad phobia, you lose perspective. Dr. Casey was recommended to me by a friend. I reluctantly went to her office, after 10 years of avoiding this at all costs. (Literally crying reading this). her office was welcoming.....it didn't have that "dentist" smell (I can smell that off people hours after they leave their appointment). I explained my situation, and she sat and listened, and changed my life. She explained bone density, and how some people need more time to get numb, and that it shouldn't hurt, and if it does, we can stop. I've been seeing her a few years now, she explains what she does which helps me feel more in control. I had sinus surgery as a kid, and never breathe naturally through my nose, and she is so patient about how often I get in my own way. I still see a therapist to help, I try to make follow ups before I leave, I am better about not obsessing over the day. Thank you Dr. Casey, for never judging me, or putting me down, or not listening, you saved my life. Now if I could just make sure you never ever retire ;)

Reviewed on October 27th, 2016

Had a nasty fall at home and called Dr Casey on her day off to ask for help. An hour later I'm In her chair and a couple of hours after that I have perfect looking repairs to my chipped teeth. She's always cheerful, knows (and explains) everything about dental health and she treats our boys like gold. We've been her patients for years and will remain so as long as she'll have us.

Reviewed on December 26th, 2015

Dr. Diane Casey and her staff are phenomenal! I have been a "career" dental patient, having nearly every milk tooth filled in childhood. I am now challenged with my adult teeth, old fill ins and gum recession. Dr. Diane recently replaced a fragmented tooth with multiple fillings, with a "cap". The procedure was comfortable and the crown matches beautifully! She is not just a Technical Dentist, she is an artist too! Additionally, I was overdue for Dental Planing, a deep scale cleaning for those of us with gum recession challenges. Dental Hygienist Laura was a true delight. She made a seemingly rough procedure a breeze. If you are looking for professionals that take pride in their work, and love the art of the smile, this is the place for you!

Reviewed on January 19th, 2012

Dr. Casey and staff -- they're great! Not only do I feel oral/dental accomplishment after each visit, but I feel content knowing new things about my mouth--like my number 32 molar is missing--, or that I should floss better between number 26 incisor and 27 canine. I've also always picked up new knowledge here that are completely unrelated or semi-related to dentistry. For example, today I picked up their Periodontal Diseases pamphlet to peruse after I got tired of doing mental equations from my Quantum Physics book, and I actually learned the etymology of "long in the tooth". Simply amazing. "Wisdom" (tooth) probably has its "roots" from dental clinics like these. Let me just say that I've been coming to this dental office since I first arrived here from Canada right after college. Our chief executive back then is now part of the dead president's club--no...not the Eisenhower administration silly. I'm not that old. Let's just say that the Police were popular and they weren't the ones tasering people at Bart Stations. I've never switched. It was Dr. K back then, and I transitioned right to Dr. C. If you want cosmetic work, Canadian silver fillings replaced, or you simply want to know more about composite fillings of organic polymer of bisphenol-A-glycidyl methacrylate (BIS-GMA) versus inorganic particles, then this is the place for you. Whether you're a "bucking bronco" kid of 6 in a dental chair, or a jaded-techie-marketing-geek who likes to write long-winded Yelp reviews, this is the place for you. If you want the gentle touch of my fav hygienist, Laura, who for many years have warned of the pain I would endure with her scalers should I fail to remove traces of calculus after each meal, then this the place for you. Should you want to debate in basic Spanish or Tagalog the influences of lumpia and coca cola on ones' abutment (and the other buttments), inlay/onlay (oh lay) or acrylic resins, then this is the place for you. Visit Dr. Casey, Laura, Leniese and Moj! Do it today! Get your cavities filled or simply drop by, say hello, and expand your knowledge with new things like domestication of foxes in the Department of Fur Animal Breeding in Moscow. But one thing for certain:--- FLOSS.

Reviewed on July 20th, 2011

Frequently asked questions
Where is Dr. Diane Elizabeth Casey's office located?

Dr. Diane Elizabeth Casey's office is in Sunnyvale, CA.

What services does Dr. Diane Elizabeth Casey offer?

Dr. Diane Elizabeth Casey offers Braces and Retainers, Bridges and Dentures, Fillings and more. Learn more about Dr. Diane Elizabeth Casey's services on Opencare or book your appointment today.

Does Dr. Diane Elizabeth Casey accept insurance?

Dr. Diane Elizabeth Casey accepts MetLife, Aetna, Delta Dental and more. Enter your insurance details on Opencare to check coverage.