Mercer & Mercer Dentistry
Shirley Mercer, DDS:
Practice Profile Page


Mercer & Mercer Dentistry
Shirley D. Mercer, DDS
Rancho Cucamonga, CA













A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Pediatric dental care

Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

Sleep apnea therapy

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 8:00 am to 5:00 pm

Tuesday: 8:00 am to 5:00 pm

Wednesday: 7:00 am to 5:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: 7:00 am to 3:00 pm

Saturday: Closed

Sunday: Closed





Check out what some of our happy patients are saying about us:

Debra R. from San Francisco, CA (Source: Yelp)


I love this dentist office.  Everyone is so friendly and I feel so welcomed and comfortable.  You know how some times you get a little nervous when you have to go to the dentist, well not at this place.  Everything is so clean and you can trust that they have your best interest at heart.  They only use the best materials on your teeth.  Thank you everyone!

Kimberly Encinas (Source: Google)


What a great Dental office and Staff. I had my teeth cleaned and they felt so clean and smooth after. Now my teeth shine nice and bright. I would recommend this office to everyone. Easy payment options are available too, if you go over your Insurance. This is a private husband and wife office who really care about you and your dental health!

Jaime E. from Pomona, CA (Source: Yelp)


These Doctors are great. They offer services that most other dentist don’t offer such as zoom whitening and laser fillings without a shot. You never have to wait and the staff brings you in on time for your appointment.  They accept most Insurances and give you a very detailed  breakdown on all treatment and estimates. These doctors are honest and fair. This dental office has up to date equipment and digital X-rays. I love how they spend time with you to explain what you need. I would refer all my friends and family here

John P. from Carmel-by-the-Sea, CA (Source: Yelp)


While traveling out of town, I suddenly lost my front tooth cap eating a pice of candy. I got on Yelp, and called the office . Within 30min. They had crates me and fixed my tooth.  This was a blessing to me! What a great group of women! Thank you so much

James Giglio (Source: Google)


Had my teeth cleaned: first time since the Corona-Craziness … Alex did her usual FANTASTIC job. First time they offered a “Numbing Rinse” before my cleaning … best $10 I’ve ever spent! Been with Dr Tom and Dr Shirley for over 30 years now … I highly recommend them!

Ajay K. from San Bernardino, CA (Source: Yelp)


I had a great experience with Dr. Mercer and his team. The appointment booking process was easy. The front staff was good at communicating the date and time of the appointment, the appointments always started and ended on time. I had a root canal done on one teeth and a new crown applied on another, the process was painless and not at all intimidating. Dr. Mercer was good at explaining the steps he was undertaking taking at each stage of the process, due to this I never felt anxious or nervous. Overall a great experience. Would definitely recommend

Andrew D. from Buena Park, CA (Source: Yelp)


Outstanding experience! They have the most friendly and welcoming staff. They do a very clean and thorough job each time. They are very helpful, considerate, and loving. I have no complaints whatsoever. I will definitely be coming back for future cleanings and checkups

Jo Ann A. from Rancho Cucamonga, CA (Source: Yelp)


Dr. Tom and Shirley Mercer have been wonderful to me and my family. We have been patients of their office for over 20 years. We started seeing them for our dental needs when our autistic son was about four years old. The dentist, whom we were using at the time, refused to treat him. We were so happy to find Mercer and Mercer Dentistry, because they not only would treat our son, but were so kind to him. Their staff is cherry and friendly and have always treated us with the upmost respect. Our son is now 22 years old and we are still patients. An added bonus is that they can perform fillings without shots and use laser. We would recommend them in a heartbeat

Sally B. from La Mirada, CA (Source: Yelp)


I think it’s been about eight years I’ve been going to Dr. Shirley Mercer.  Can’t say enough about her and everyone in the office.  I don’t live in Rancho Cucamonga anymore but make the drive out there for my dental care.  I wouldn’t go anywhere else

Michelle M. from Claremont, CA (Source: Yelp)


My family has been coming to this office for about 3 months now and we receive exceptional care from the ENTIRE office.  Every single person here contributes to our consistently above average experience.  My 6 year old has said on a few occasions that “they all make a great team.” :). Aside from the friendly and thorough staff, the office is very clean and I’ve never experienced a greater wait time than 5-7 mins.  This is the first time in my my receiving Dental care have I ever received a cleaning from a hygienist.  Michele, the hygienist there has brought so much knowledge and education to how I currently care for my teeth.  For anyone who has ever received a cleaning from a Dentist vs a hygienist, it is a very different experience.  It would be comparable to seeing an eye specialist vs a Physician if you had a problem with your eye.  Thank you Kim, Lorena, Sandy, Dr Tom, Dr. Shirley and Michele for your expertise and care

Sue D. from Rancho Cucamonga, CA (Source: Yelp)


A truly amazing dentist office! The most experienced and professional dental office I have ever encountered. It is very easy to get an appointment within the week and they send notifications via text. They truly care about their parents and follow up any major procedures. I recommend them to my family and friends.

Michael M. from Rancho Cucamonga, CA (Source: Yelp)


Friendly staff, and ethical Dentists that don’t misdiagnose just to charge you more.  Unfortunately many places will do that.  They’ve been doing Dentistry for many years and have the most up to date technology.  They use lasers for fillings instead of drills and can use the lasers for all sorts of interesting things.  The best part is the laser doesn’t hurt at all so you don’t have to be numbed up for half the day.  With so many dentists around it’s important to find one you can trust.  These are the best dentists I’ve ever been to, and there hygienists are really good at what they do as well.  If you need a teeth cleaning this is the best place to go.  They have the best hygienists in the IE

Joanne S. from Rancho Cucamonga, CA (Source: Yelp)


I’m very happy with the treatment I received from Dr Mercer I was in a very tight spot my back molar had broken not only did they get me in ASAP but the very next day was able to fix it I’m new here and had no clue who to trust and my expectations were exceeded I highly recommend this practice

Tracy W. from Victorville, CA (Source: Yelp)


I have visited this dental office for many years. I have had my teeth cleaned by Michele and Alex and both are terrific. I have seen both Dr. Tom and Dr. Shirley and both of them are caring, gentle and very thorough. I always feel like my teeth have been completely cleaned and examined and are in tip-top shape when I leave the office. And the reception staff are always pleasant and helpful. Just a nice place to visit. I feel fortunate to be able to call this my Dental office. It’s a bit of a drive but I’m willing to make it!

Dorothy J. from Rancho Cucamonga, CA (Source: Yelp)


Searched many Dentist in the area of Rancho Cucamonga. What a  complete oral exam I received from Dr Shirley Mercer, she explained everything in great detail. I was at complete ease with her, and the wonderful courteous, kind and professional staff from the minute I walked in until I left. This is the best dentist I have been to in years. Recommend them highly, The wait was short for being a new patient. I can’t wait to start with my beautiful smile that I’ll have once again when Dr Shirley has completed all the work

Sally Backstrom (Source: Facebook)


I’ve been going to Dr. Shirley for eight years now. She and all the staff are so kind and friendly. Shout out to Michelle who cleaned my teeth today!

Antonia T. from Rancho Cucamonga, CA (Source: Yelp)


I wasn’t happy with my past dentist, so I decided to just look at reviews for dental offices in my area and I came across, Mercer and Mercer dentistry.
Dr. Shirley Mercer is the best dentist. From calling the office to schedule an emergency appointment, to getting my work done, to scheduling payments for what my insurance did not cover, all of it went very smoothly. I felt well taken care of and at ease under a very painful/stressful situation. I would recommend this dental office to anyone looking for a dentist. The best dentist I’ve been to thus far

Tracy Walters (Source: Google)


My teeth are very sensitive and Brandy took the time and care to make my cleaning a pleasant experience. Always feel like I get the best service possible with Dr Tom, Dr Shirley, and their office staff. Thank you very much

Gordon B. from Oceanside, CA (Source: Yelp)


Dr Thomas & Shirley Mercer have been our Dentist’s since 1996 when we were living in Rancho Cucamonga. We both had various prior experiences with different dentists–some good–some bad, but we were impressed on our first visit and 19 years later we are still driving 100 miles from Oceanside, CA 2-3 times a year to continue our dental treatments with the Mercers. In 2004 we moved to Oceanside, CA and decided to try out a new dentist in the local area. What a disaster. On our first visit to the new dental office, examinations with X-Rays were completed and we were told that my wife needed to replace 2-3 crowns and to remove and refill 2-3 teeth. My exam was not so severe, but indicated I needed some major work. The office even had a financial consultant to help us with the approximately $5000.00 in proposed treatments. That was a major red flag for us. My wife was so upset that we immediately made an appointment with the Mercers and informed them of the new dentist findings. Since we had seen them regularly for over 8 years, they reviewed the other dentist recommendations and informed us that we needed no additional treatments. That did it for us. We will be their patients as long as they are in practice. Over the 19 year with the Mercers, we have both had regular cleanings, fillings, crowns and even one dental implant. Not once have we been dissatisfied with any of these procedures, nor did we feel pressured to have a procedure completed immediately. If you are looking for a dental team who are extremely professional, competent, honest, and have terrific hygienists and a friendly and helpful office staff–look no further. We give them our highest recommendation!!!!

Michelle Z. from Rancho Cucamonga, CA (Source: Yelp)


Drs. Mercer and Mercer provide above and beyond dental services.  They are honest, professional and most of all, really good!!! All their staff are helpful and courteous. I have been with them for over 15 years. If you are looking for a dentist…I highly reccomend them.

Marcus R. from San Bernardino, CA (Source: Yelp)


Great service as always!  The experienced team is amazing and were able to get me in and out of there pain free with the highest level of quality you can expect. Thanks to Dr. Mercer and the entire team I enjoy going to the dentist!  Thank you

Frances Knox (Source: Facebook)


The staff is so friendly and professional. Doctor Mercer shows a deep concern for his patients. He is gentle, explains exactly what needs to be done, and he wants to make sure that you understand. I have been going to this office since 1998, and I have never had any problems. I can truly say that I still have at least 70% of my own teeth in my “senior” year!

Ken D. from Buena Park, CA (Source: Yelp)


My wife, two boys, and I all returned to Drs. Mercer and Mercer for exams and teeth cleaning. My teeth are in good shape, but my gums are receding. I need to floss everyday, brush with a soft toothbrush, and use a water pick. My boys had significant calculus and needed a thorough cleaning. They were surprised and gentle it was and how much better their mouths felt. It was evident they were brushing wrong and needed to know how to brush better. They are excited to use a water pick to help their oral health. We are very happy with Drs. Mercer and Mercer and highly recommend them.

Craig S. from Anaheim, CA (Source: Yelp)


Dr’s shirley and  tom in my humble opinion are fantastic practitioners
their office has the latest and greatest equipment, everyone there actually cares about the patients, and work with them in their required procedures. I’ve gone through many other dental practices (unhappily) until I was recommended there last year.  I’ve been getting my care there ever since

M. H. from Rancho Cucamonga, CA (Source: Yelp)


Who wants to go to the dentist? Not me. NOT EVER! With that said, I’ll add the fact that I wouldn’t consider going anywhere else but to the Mercers. This is a family business that makes me feel like part of the family. And it’s apparent that both Dr Tom and Dr Shirley take extreme pride in their work and in their efforts to keep me informed on the best decisions I need to make concerning my dental care. I’ll also add my take on the rest of the staff from Kim the receptionist to Michelle the hygienist. Everyone there is pleasant and inviting

Cissy M. from Rancho Cucamonga, CA (Source: Yelp)


I have been a patient of Mercer and Mercer for over 20 years. The years have not diminished their outstanding customer service or their quality of service. They are up to speed on the latest advances in modern dentistry. They are extremely warm and personable. I have referred many friends. Their staff is awesome and so friendly. They engage in genuine conversation from visit to visit which shows they actually know me and my interests. Finally, their patients have the best view of the mountains from any room that a patient enters for service. The beautiful view and lovely music makes you forget that you are at the dentist

Lydia B. from Fontana, CA (Source: Yelp)


Our family has been coming to Mercer & Mercer since 2002. I myself was very nervous to start a new dentist because I did not have a good experience with my childhood dentist. I was so pleased with the atmosphere of the office staff and when I met Dr. Tom & Dr. Shirley I knew we were in good hands  Since then we never considered going to any other dentist. This office makes sure we are well taken care of, from the moment we walk in to the moment we leave.Knowing this is a family dentistry makes it that much more special. Everyone greets you like your part of the family. We have never had any problems with costs. The accounting staff is always on top of letting us know what the insurance is taking care of and what we are responsible for

Kelly M. from Rancho Cucamonga, CA (Source: Yelp)


This is the best dentist I have been to in years. I highly recommend them, everyone from the receptionist to the dentist was professional kind and courteous. There was no long Waiting line when you have an appointment. I can’t wait to start my new adventure with my beautiful smile that they are giving me

Dave T. from Upland, CA (Source: Yelp)


This is my new dental office. Clean caring and professional. Had a emergency and Kim got me right in. Dr. “Shirley” was excellent, caring and gentle. Dr.Tom also looked in on me on his day off. What a team what a office. Call for an appointment and see for yourselves.

Roxanne P. from Ontario, CA (Source: Yelp)


Dr Mercer is amazing !! I was made to feel welcome from day 1 ! Everyone there is friendly and make you feel welcome and very comfortable. They are always  very informative on my care .Best dentist I have gone too . Would definitely refer my family and friends!

Jennifer D. from Rancho Cucamonga, CA (Source: Yelp)


I have been coming here for 12 years now and will never leave…Seriously I had the same dentist since I was 2 and when I married and we moved I was so scared to leave me dentist soooooo I used to drive. One day I had an emergency and went on a wing and a prayer to this office and I was in love. They take amazing care of the patients needs no matter what. I have called many times with urgent appointments needs as I have three kids as well. I’ve always been taken right in and my kids love them as well. They have bent over backwards for myself and my family and I absolutely love them and it feels like family after a while. They always ask about the family and actually know my family and remember what we’ve spoken about…truly caring …amazing office to day the least

Dima E. from Los Angeles, CA (Source: Yelp)


I’ve been a patient here since 2011 and I have nothing negative to say. The staff is very nice and helpful. They focus on prevention, which I think is necessary. I really enjoy getting my teeth cleaned because they explain step by step where you are at and what you need to do in the future. I find my visits to be very educational and informative. I have a very curious mind, so naturally, I like to know why things are the way they are and the staff at this office are more than willing to answer any questions, provide advice, and help you through any means

Alejandro Muñiz (Source: Facebook)


I think I’ve been coming here for right around 18 years I think. When I was pretty small anyway. Dr. Tom and Dr. Shirley Mercer are great dentists. They have always been very accommodating, informative, and realistic when I’ve needed work, and it has been extensive over the years. Its also been great to know they’re there when family members have been in car accidents and needed emergency dental services. Have I mentioned the staff? Hygienists are out of this world nice and gentle, and so are the assistants. They’re also pretty funny. That’s why I drive up from long beach still to see them

Dan B. from Rancho Cucamonga, CA (Source: Yelp)


I’ve been a patient of the Mercers since 1997! Dr. Shirley and staff are patient and caring. When my children came in for their first visit years ago, they went slowly and explained everything which was a blessing as my kids were very anxious about the dentist. If we ever need anything, they are always willing to work us in for any concrete have. Always provide a reminder call so we never forget a visit. In short, we’re not just patients,We’ve built a relationship and feel like they genuinely care about us

Derrick P. from Claremont, CA (Source: Yelp)


Our family has been seeing Advanced Dentistry by Mercer & Mercer for over 20 years. Dr. Shirley and Dr. Tom are caring, patient, and compassionate. They have their patients’ best interests at heart. The staff is friendly and cheerful. Our appointments are on time and Kim is great at accommodating our busy schedules. Kim is also considerate and helpful when explaining our insurance coverage. We highly recommend Mercer & Mercer


We are a full-service and comprehensive dental office, treating the whole families oral health and creating beautiful, healthy smiles. We are certified to offer laser, Invisalign, and ZOOM! Whitening treatments, alongside providing personalized cleanings and checkups. Our expertise also includes the procedures of root canals and dental implants. We pride ourselves on offering a comfortable, welcoming office while staying current with the most advanced techniques and products available for your smile. We offer saving your teeth in a Tooth Bank! Tooth Banking is the storing of dental stem cells that have the ability to regenerate into various cell types. When your child's tooth or your own is extracted by a dental professional, dental stem cells are harvested from the dental pulp within the tooth. Baby teeth and wisdom teeth are rich in dental stem cells. These cells within the pulp are a valuable source of highly regenerative stem cells. These dental stem cells are preserved indefinitely by being isolated from the dental pulp and cryogenically frozen. Dr. Shirley Mercer has lived her whole life in the Inland Empire and is a fourth generation dentist. She received a Bachelor of Science degree with highest honors from California State University of San Bernardino in 1980. She attended dental school at Loma Linda University. She was picked as outstanding senior student by the Academy of General Dentistry and the American Association of Endodontists. She graduated with honors from Loma Linda University in 1984. Since then she has achieved an Associate Fellowship in Laser Dentistry and advanced certification in Invisalign invisible braces. Her education did not stop there because she continuously takes classes to improve her skills in the latest dental techniques. Dr. Shirley met her husband Dr.Thomas Mercer in dental school and they have been serving the Inland Empire in a family oriented, cosmetic dental practice ever since. They are raising four children, the oldest of which is studying dentistry at Loma Linda University so he can join his parents in their dental practice.