Raynato Castro, DDS

I’ve been seeing Dr. Van Dyk for my dental care for the last 30 years. Admittedly I was a little apprehensive when I found myself being transitioned over to Dr. Castro. But I shouldn’t have worried. He’s a class act. Very knowledgeable of his craft. Funny and highly skilled. He genuinely cares for his patients and he is adamant about teaching you how to maintain your dental health. Run don’t walk to see Dr. Castro– he’s the best dentist in the area. I still get to see and chat with Dr. Van Dyk on my visits which makes the entire experience of going to the dentist that much better.

Dr. Castro is the best dentist I’ve ever had. He’s funny, kind and very knowledgeable. The entire staff is very friendly and gentle. I’m never in any pain or discomfort.
Dr. Castro makes you feel right at home. He was very helpful when our insurance lapsed and he even donated some dental bibs for our school production of Little Shop of Horrors!
Thank you to the whole staff for such a great experience every time my husband and I come!

I have been going to Dr. Van Dyke since I was 4, that’s 30 years! In the recent years, my care has been taken over by Dr. Castro. He does a great job so I will continue to commute from San Francisco to Dr. Castro for my dental care.

I’ve been seeing Dr Castro and his awesome staff for 3 years already! I hate to admit it, but when I lived in the south bay, I frequented the dentist, and many of them. By far, Dr Castro tops them ALL! The BEST thing I love about going to him (who loves going to the denist, EVER) is that he explains everything– before, during and after. I’ve been to his office so often that I trust him for my 3yo’s teeth and my son trusts them too! Please don’t hesitate, if you’re looking for an honest, funny, down to earth Dentist… Dr Castro is your guy! All of his «girls» aka staff or his angels, as I like to call them, are amazing too! I feel like part of their family EVERY time I visit. The only thing I would change, is to move him to the south bay, so that every one I know can be his patient too!

The difference between Dr. Castro and other dentists is that he genuinely cares about YOU. He’s got a great sense of humor, a gentle spirit, and, as mentioned, he cares. I never thought I’d look forward to going to the dentist, but I now do. It’s as though everyone who walks through that front door is family.
Here are some examples of his genius: I have a fake front tooth that was longer than the teeth adjacent to it and gave me a goofy grin. I asked Dr. Castro if there was anything he could do about it because my daughter’s wedding was approaching and I didn’t want to ruin any photos. Dr. Castro took care of the problem ingeniously and I felt confident about smiling again.
At the next checkup, Dr. Castro said «Now let’s take care of that space.» (He was referring to a space where a tooth once was). I was so surprised as I had given up on that and hadn’t even mentioned it even though I hated having the gap between teeth. I had lost that tooth years ago because I refused to put a crown on the tooth after a root canal (turns out crowns — or at least back then — had a metal base that causes me pain). The empty space left was causing my teeth to shift, and Dr. Castro had a plan that did not involve any metal. I now have a 3-​piece bridge that covers the adjacent teeth and fills the empty space with a new tooth. It’s one piece and made of a new material — wish I’d remembered the name — but it looks natural. The work was amazing, but even more amazing than that, Dr. Castro was the one who saw the problem and then provided a plan to fix it. His solution was a third the cost that had been quoted to me by other dentists whose plans included the metal-​based crowns (which is why I had given up hope of ever having it fixed) .
After the work was completed, Dr. Castro told me there weren’t any more problems with my teeth so he’d see me in six months for a cleaning. He is the best! and I am so happy and fortunate to have found him!

Dr Castro is awesome in every way… I haven’t been to the dentist in like 7 years, now I look forward to going to the dentist now instead of shying away like i used to. His staff is friendly and informative and they make you feel like family. Dr Castro himself is very non intrusive and walks you through every step of every procedure and does it with humor and being very personable. Since going to him my dental hygiene has improved dramatically and myself and my family will be a life long patients.

Dr Castro is comforting in professionalism and he’s also easy on the eyes, his bow tie choices exudes his unfaltering pursuit in the world having a greater smile. He’s the batman of dentistry in many ways really, he’s not the hero your molars want but he’s the one they need and 2. He doesn’t kill people. I can’t wait to get better insurance to fix my whole situation up at some point, I’m definitely sticking with dr Castro and his assistant, as she is comforting and easy to talk to. Genuinely good work from genuinely nice people, and what better can you say of someone.

I’m a new patient of Dr. Castro. I’ve had a ton of dentist experiences (including a dentist in Thailand on my honeymoon). Dr. Castro is by far the best dentist I’ve ever experienced. He is kind, knowledgeable and understanding. Not only did he make me feel comfortable in office, but he takes extra time to check in after my more intensive appointments to make sure I’m feeling ok. I’m so excited I found him.
Side note, his front office and dental hygienist are just as wonderful!

A very friendly dentist and kind to his colleagues and patients. Dr. Castro is humorous but not lacking in professionalism. A graduate of UOP and practiced under Dr. William Van Dyk after completing his education.
I used to live in Richmond but I recently moved to the Antioch/​Brentwood area and Dr. Castro’s knowledge and care is worth the drive.
Dr. Castro’s staff and hygienists are intelligent and skilled. I feel very comfortable with them.
I had all four of my wisdom teeth extracted here and I did not feel pain. His assistant even cleaned them up for me in a special solution once I asked if I could have them.
As far as I could tell, he only recommends necessary procedures.
I would recommended him to anyone seeking a dentist that truly cares for his patients.

Best dentist ever. He tells you whats wrong and and gives tips. You will bever be scared of the dentist again.

Dr. Castro is hands down the best dentist I’ve ever been to. Over the years I’ve had far too many truly traumatic dental experiences at other places… Dr. Castro has been nothing but calm, understanding, patient, and empathetic. He will keep you laughing through all procedures, and you will leave with a smile, and no pain. (Seriously, best cleaning I’ve ever had was with Dr. Castro.) Everyone in his office is very sweet and is willing to take the time to explain things and answer even the silliest questions.

I have been seeing Dr Castro for approximately 2 years. He is probably one of the BEST dentists who graduated from UOP better yet in the USA. Dr Castro is very patient, intelligent, funny and very artistic. Dr Castro did major work for me and I looked forward to every visit and was so excited to see the final result. He is very thorough, very respectful, works well with his assistants and colleagues. His skills, conviction and knowledge of the job is above and beyond what a person can ask for! I highly recommend Doctor Castro. You will leave with CONFIDENCE and a MILLION DOLLAR SMILE!
Dr Castro — thank you for my beautiful smile and a big thanks to your assistants and staff Luz, Star, Marlene and Lily for their kindness and patience–
Sincerely,
C. Anderson

I went to Dr. Castro in order to have cavity work done on a bunch of my teeth — actually 7 total. We broke it up into 3 appointments and each one went flawlessly. Very relaxed atmosphere. Dr Castro and his assistant Star were both very attentive to how I was feeling, making sure there wasn’t any pain (there was none). After the fillings they made sure my bite was even and I came out of every appointment feeling good.

This dentist and her staff were very friendly and accommodating. The exam areas, restrooms and lobby were exceptionally clean.
Unfortunately I’m not happy with the cosmetic crown I had placed on my front tooth :(The color is a fine match but the shape and size of the tooth is off. (Not the same width as it’s match or as wide as it was before. The new crown has a rounded edge when it was a sharp corner before and I requested it stay that way). Also, I’ve been left with a space/​gap where there wasn’t one before. As a result a tooth that was fine before has begun to move or of place.
This dentist did not actually make the crown in unhappy with. However this is the product she sells. Perhaps she’ll consider contracting with another vendor. Stinks that I got stuck with the bad match tooth :(
My tooth was ugly before and IS better now. BUT to make matters worse, because of the other tooth moving out of place I feel that I’ll need braces to get my teeth as straight as they were before.
Lesson learned, be careful what you wish for. If only I could have just dealt with my old «ugly» tooth. It would have saved me a huge headache.
That being said, I am not a dentist and this is only my opinion.

Best dentist! This place makes my dentist experience personal. I walk in and im greeted by name. Appointments start on time, i get a reminder text or call. Ever modern advance we have they use from the equipment used down to there means of service.

Not sure how it happened, but I was switched from Dr Backstrom to Dr Castro at Artesa about a year or so ago. I probably asked for a specific day/​time and he was the doc that was in. Anyway, Dr Castro is super cool. He is just the right amount of chatty for a dentist… but not that annoying kind where they ask questions that you can’t answer because his hands are in your mouth– you know what I’m talking about. I think I’ve seen him three or four times, cleanings with exams and for a crown and no problems or complaints. I’m not a lover of going to the dentist, but actually like Dr Castro. He’s really funny and will keep you entertained through the whole visit. it will be over before you know it!