100% strongly recommend Sunset Veterinary Center! We are so glad we found Dr. An and his wonderful team! Even when booking the initial appointment, it's clear that the office is well-trained in clear, effective communication and prioritizes your pet's well-being and scheduling needs. They are also transparent about costs (very reasonable) and provided full visibility when I asked over the phone. The office is spacious, clean, and quiet - making it a very comfortable and not an overwhelming environment. The entire team is extremely attentive and I can tell they prepared beforehand (everyone knew our names + why we were visiting vs. oftentimes, you will get asked why you're in again). We came in for a check-up and vaccinations. Dr. An is very patient and knowledgeable. He starts big picture, makes no assumptions, and helps you understand all elements/considerations, before going into more detail. Having limited knowledge on pups, I was very impressed with how digestible he framed the information. When I was on the fence between two treatments, he and his team put together both plans for us to see costs vs. risks. I appreciated that there was no pressure and the entire team helped us feel comfortable with our final decision. He also called a few days after to check-in on how our pup was doing, which we warmly appreciate. I also want to give a shout-out to Carol, Vivian, and Kelsey for excellent service, positive energy, professionalism, and overall making our first visit experience extra enjoyable! read more

I took my new litter of eight kittens and 1 elder kitten to Dr An. He and his office staffs are all kind and take their time with my kittens. When the kittens came out after vaccinated, they were ready for Halloween! Please see the cuties pictures below. I strongly recommend Dr An's office. I'm a breeder. I'm so happy to have a nice vet service I our local place. read more

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I found here on yelp and I am very glad I did. I changed my cat's vet because previously vet has moved to other place. At my previous vet, I had to wait at least 30 minutes even with the appointment and had to wait again for vet when in the room for another 20 minutes. Here, I never had a wait time. Staff are so nice and Dr. An is very kind, always taking good care of my cat. The rooms are very clean because they clean the room every time furry patient leaves. Reasonable price and they never force or make me feel obligated. I've been to a vet where they force me and make it sound like I am a bad mom for not "buying" what they put on the receipt. read more

This morning we realized our baby Milo had a broken dew claw and was experiencing some discomfort. Our usual vet was fully booked so we called Sunset Vet Clinic and they were able to see us right away. The office is very clean and the staff was friendly/knowledgeable. Milo seemed comfortable in the office and around the staff, and we were in and out in no time. Dr. An was great and we will be back! read more

Sunset Veterinary Center - Veterinarians Near Me - Diamond Bar, California

Had to take time out of my busy schedule to let the world know that Sunset Veterinary is top notch! I took my senior Shi-Tzu in for some behavioral concerns as well as medical and I was truly impressed with the service. In addition, the amazing Vet. doctor An called me the next day to see how my dog was doing. I have never met a vet who goes out of their way to check in on your pet. This really confirmed his passion for helping animals. He spent a good amount of his valuable time educating me about my concerns. In addition, the office staff and nurse were super duper sweet!!! Rest assure, customer service is the best in the West! Thank you for such as positive experience. You have earned my trust and business for good! read more

I took my 2 dogs in for vaccinations and 1 of my dogs needed a health check for a on going issue. From the moment I came into the exam for my 2 dogs was excellent . The doctor took his time and answered all my concerns I had with my dogs. One of my dogs is a very nervous and the staff and the doctor took there time with her. I'm a long time dog owner and the level of service I had gotten from this Vet was excellent . I Highly recommend this place for your fur family member. read more

I just recently had my dog move in with me and decided to give this clinic a try! From the technicians to Doctor An, everyone was so patient and kind. The service was outstanding and I love how clean and modern the facility was :) Thank you Doctor An for being so patient and understanding with all the questions I had! I highly recommend this clinic to anyone in the Diamond Bar and Pomona area. They also give the cutest bandanas after :D read more

Sunset Veterinary Center - Veterinarians Near Me - Diamond Bar, California

Just had our first appointment with Dr. An and I'm truly impressed. The establishment is very clean and staffs are extremely friendly. Dr An is gentle and patient. More importantly, they do not force you to buy into their products and services. Would highly recommend anyone looking for a vet to check out Dr. An. read more

All the 5 star reviews speak for themselves. Dr. An and his staff are THE BEST! There is no one else I would trust my little girl with. So grateful for the support, love, and care they provide to my pupper. read more

I followed Dr. an from his previous practice because he has been the most caring and informative vet for my 2 fur babies. I trust his recommendations and that my pups are in good hands! Unfortunately I have to find a new vet because I'm moving far away, but I would 100% recommend him to all fur baby parents! read more

As a long time dog parent, Sunset is the first Vet that I am happy with, and willing to write a review for. Staffs are super friendly and do well on follow ups... not the "up sell" type of follow up, and I really appreciate that. Dr. An is very professional and detail. He is willing to spend the time to discuss different options, its' pro and cons, and his suggestions. I stop going to the previous Vet because they always lure us in with low cost check up and schedule shots, but the bill will always be 3~4 times higher because of all the "suggestions".... I'm happy to have a Vet clinic like Sunset Vet in Diamond Bar. read more

Dr. An & staff here have been such a pleasure to work with & an exceptional veterinary place for our dog. We've had our fair share of bad & traumatizing experiences w/vets so we feel so blessed & fortunate to have found Sunset Veterinary. The team is timely, professional, compassionate & the office is clean & welcoming. Dr. An is very knowledgeable, so informative, considerate & caring. We appreciate him tremendously for taking so much time to thoroughly explain things to us. We also appreciate that he took cautionary steps before rushing into any treatment or pushing any medication on our dog without further examinations, tests & investigation. We definitely feel that our dog is in good hands. Grateful for & appreciative of Dr. An, Carol & Terry. Thank you so much! read more

Came in here cause my little one was having trouble with her teeth so came for a quick check up . The staff was sweet and gentle. The doctor was super helpful and great with my dog !! The office was also clean and sanitized ! read more

Sunset Veterinary Center - My fur baby - Veterinarians Near Me - Diamond Bar, California

I have never had my dog shown so much love, kindness, and genuine tenderness and care. Great staff and great care for my dog. I am new to Walnut and was looking a replacement pet since going back to my old vet was not possible due to distance. My old dog's vet was great, but his new vet is definitely several levels above why I expected. read more

Dr. An and his staff provide the utmost professional and empathetic care that one could possibly ask for. They are all very knowledgeable and i can appreciate how thorough they are with explaining after care as well. If you are looking for a place where they will treat your pet as their own look no further! read more

First time visit- I was 30 min early ( my fault) and they didn't have me wait. This is a wonderful Veterinarian Office. Extremely friendly and attentive office staff. Dr. An is wonderful. He takes his time, is attentive, knowledgeable and very kind. They do not push services or procedures and let you know you can easily decline their suggestions. I declined some options and it was absolutely no problem. I felt very comfortable and my cat did very well. I will def be back and can highly recommend this vet office. There is plenty of parking and freeway close. Thank you Dr.An and all the staff for a very pleasant visit. read more

Dr. An and the staff at Sunset truly care about their clients! Modern office with state of the art equipment. Dr. An has practiced vetinary medicine for 15+ years. Happy to see him open his own practice! read more

I have been debating on posting this review for a while but today was the last straw with this alleged Doctor. I had previously taken my pup to this doctor because of its stellar reviews. Almost a year in I started noticing discrepancies with some of the diagnosis for my pup. When I would ask staff questions or even the doctor regarding treatment or follow up questions they would freeze and not know what to say. At first I took it as they are still new and perhaps they are a little nervous and want confirmation on their response. However when it started occurring every time I would have an appointment and asked my questions I started questioning if they knew what they were doing and if perhaps I should look for a new doctor. Not to mention that they would give me this ridiculous treatment plan and include services that I had thought of doing in the future and notified me that it was important that I did them now. They really wouldn't take into consideration my concerns and why I brought my dog to his specific appointment. Rather than sell me a collar or some spray that would help my dog's nerves how about you help me understand why my dog would continue to get ear infections. Thank god I did and I am now getting my pup the adequate and appropriate treatment as well as food for him. I am reassured that my dog's new vet and vet technicians have the knowledge and training to leave my dogs well being in their hands. Now, there was an incident that took place with this Sunset Veterinary Center. I won't get into the details but it left a negative impression and made me realize that they treat people of color differently. What I will say is that if you aren't dressed to the nines or if you are a hard working individual that does not have a white collar job but rather do construction or gardening these people will look at you differently and make you feel insecure. That is exactly how the two ladies in the front made my father feel. Those ladies need to do better and respect everyone. Not once did my father give them an attitude and said something inappropriate. He just asked where I was because he need my car keys. This is 2024 and people as well as business like this need to be called out. I did bring up my concerns to Dr. A but I'll be completely honest, I felt that he didn't really care and was just talking and making excuses to save his place of business. If you really felt embarrassed or sorry or as you stated "didn't tolerate this behavior" you and those ladies should have properly apologized to my father. Not me. It has now been two going on three months that we have not had contact with this veterinary and tell me why they call me reminding me of an appointment for my dog? I specifically stated that I would NOT be returning after the events that transpired. I left them a voicemail and Dr. An returned my call stating that my "grandmother" had made an appointment and that it was a miscommunication and that I should have a better day. First of all, both of my grandmothers passed away when I was 5 years old so there is not way my "grandmother" would make an appointment. Since this place doesn't not take the hint maybe this review will make them understand that I want nothing to do with this veterinary and I do not want to be contacted by them. I am happy with my dogs new doctor and have no plans of ever coming back here. Dr. An I continue to have "better" days especially more so since I am now taking my dog with adequate and respectful veterinarians. I do not like being harassed by you and you need to realize how you speak is out of line. DO BETTER. Take a hint of this review to leave us alone and do better with how you communicate with pet parents. Take this as a life lesson and work on have proper respect for pet parents before you start losing more clients. I hope you actually keep your word and tell your staff to NOT contact me. Hopefully nobody else calls you out. read more

Dr. An and his staff were great! I had a great experience. I love that the center is located in the city I live in. The facility is new and clean. Dr. An definitely takes his time and will answer all your questions. He will also call to follow up. Shows that he cares! Dr. An helped to set up a allergy kibble diet to be delivered to my house. Hopefully, I will see improvement with Elroy! read more

I am late to the party but wanted to add my review of Sunset Veterinary Center which I took our dog Toby to a couple of months ago. First of all I used to take him to another local vet near me since we first brought home our "pound puppy" and was never unhappy with them, although I thought they were really expensive compared with other vets. I read about this place through the Diamond Bar Buzz and- after 10+ years- made the switch here! Dr An is amazing at calming Toby and very thorough at giving me his diagnosis and treatment plan. I can tell that he and his staff REALLY love animals. Prices are fair and since Toby will need a bladder surgery I appreciate Dr An's approach at making this work for my budget. I've already recommended him quite a few times and do glad I made the switch!! I wish Dr An and this center well in this city ! read more

Went recently for my kitty, we are new in the area so had to try a new vet and super glad we found here!! Super convenient and close location and the care from the nurses and doctors were amazing! They were super gentle with my cat and very thorough in explaining the process and what she needs! Got her vaccines and fixed an eye problem at an affordable price :) Definitely coming back everytime! They were also super understanding when I had to move my appointment due to work and were able to see my cat asap with no issue! read more

Easy to schedule, friendly staffs Convenient parking, very little waiting time to be seen. read more

Thank you Dr An and the staff for taking such good care my fur baby during an emergency. Dr. An was able to stay after hours and provided such great care and relief. He even called over the weekend and after hours to check in on us which was a surprise. His staff was so efficient and comforting the entire time, not to mention we love their brand new facility as it is clean, modern and had a beautiful minimalist design. Thank you! read more

Great services and genuine staff. Will be bringing my dogs here for all their veterinary needs. I

If you have a kitty who needs careful handling due to shyness or a history of trauma, Dr. Philip An is kind, gentle and patient. He is also certified in Fear Free handling techniques that make visits to the vet less stressful for both cats and dogs. I took my alpha cat Yanni, who has a history of trauma, to see Dr An and I was very impressed. My cat gets very stressed if he is scruffed. Dr An and vet techs Vivian and Carol treated my cat gently and with respect-without ever scruffing him. Five stars! read more

Dr. An has been our vet for almost 9 years and based on the reviews, we are not the only ones who followed him to his new clinic! Dr. An takes the time to have a thorough conversation about your pet's care and has excellent clinical skills. I have always appreciated the kindness to his approach and the way he clearly loves caring for animals. I first came to Dr. An with a senior cat with diabetes and he helped us manage her care, which required insulin injections and regular check-ups. At the end of her life, she was diagnosed with bone cancer and I will never forget Dr. An's compassionate approach in helping her stay pain free to the end. I now have a cat who has issues with chronic regurgitation and Dr. An has been great with answering questions, suggesting behavioral changes, and follow up diagnostics. If you're looking for a vet who can work with you to manage more complicated or chronic conditions, call Dr. An! read more

When our lovely dog, Lucky, first showed signs of illness (bloody nose), Dr. An referred us to a specialist because he suspected that my dog might have a tumor in her nose. We hoped it was a minor ailment, but the specialist later diagnosed it as cancer. Despite the sadness that accompanied us for the next four months, we were able to spend happy moments together. If we hadn't met Dr. An, it gives me chills to think about how we would have left my dog's pain unattended, not even knowing where it hurt. When our dog crossed the rainbow bridge, everyone from Sunset Vet was extremely kind and comforting, providing warmth. Tears welled up as we read the handwritten messages from Sunset Vet team members on the card when we received our dog's ashes. Thanks to the heartfelt comfort from Dr. An and all the staff members from Sunset Vet, we were able to send off our dog peacefully. read more

Best veterinary clinic I've experienced. The staff was super friendly and made my baby feel welcomed even though she's normally scared of going the doctor's. We went in for an examination for assumptions of possible breast cancer and left with a relieved feeling that my baby is healthy. Dr. An was very helpful and kind to even offer a complimentary ultrasound to ensure that there were no lumps or tumors developing. Highly recommend as I feel safe as a pet parent knowing that this place really cares about your pets read more

5 stars for dr. An and his lovely helpful staff! Their treatments for my dog son have been extremely thoughtful and they go far out of their way to make both my pup and me feel comfortable. Thank you! read more

I was debating on taking my Rottweiler Joy to a local vet because we have a mobile vet , who we adore , Joy is our families 5th Rott , the vets in the area diamond bar and chino hills always want enormous fee's (the reason for my mobile vet) . Joy is about 8 years old and is showing signs of old age (too soon) She needed to see a Vet right away . My vet was not available until the weekend and it was only Monday , we came to Sunset Vet because of the Yelp reviews , we love this place , Dr/Staff had patience with both joy & I because we were both nervous, he examined Joy and gently recommended we give her a few meds for 7 days without having to do x-rays and blood work (near future) Joy got better . Thank you for having patience with both joy and I . I will definitely be back if need be , the dr & staff are great ! thanks again ! my family and I appreciate you ! read more

We have followed Dr. An from when he was West Main Animal Hospital to VCA and now to Sunset Veterinary Center. We are so happy he decided to open up his own private practice and even though the drive is 1 hour for us, it is completely worth it. Our dog loves Dr. An and every treatment plan he has given us has worked. We have a French Bulldog that it a little more high maintenance and Dr. An really knows how to work with this breed. The office is very clean and all the staff members are very professional and friendly! Everything is state of the art but there's also a personal touch. They give my dog a different and cute bandana every time we come in. Thanks for taking such good care of my best friend Sunset Vet Center!! read more

Dr. An is truly the best. I followed him to every veterinary clinic he worked at and when he finally opened his own, I obviously followed him there as well! His staff at Sunset is especially nice and very loving to my two fur babies. They are always so happy to see my puppies as if it's their very own dogs walking through the door. Dr. An is very knowledgeable and will answer all your questions and concerns. He is very gentle with my fur babies and will always suggest what is best for them- from what types of food is best to when is best for them to make babies and make me a grandma! You won't regret taking your fur babies there! :) read more

Not sure what to think... I read glowing reviews on FB, so tried here when looking for a new vet. First visit was to euthanize my suffering cat who I'd been trying to save for months with a previous vet and a specialist, and spent thousands of dollars. We wanted to be with her to comfort her. First shock was the price of nearly $700. After I complained some things were taken off, including the doctor's exam fee (thanks), to make it just over $400. Besides that, it took 1 1/2 hours! They took my cat into the back for a long time when we wanted to be with her to comfort her. I still don't understand why the whole thing took so long, and why my cat was not with us. Seems like a nice enough doctor and staff, but I'm not sure this is the place for me and my 5 other cats. read more

They absolutely care for your animals here. Very thorough and patient. The doctor called us several times with updates on blood work and lab results. We will now be bringing our animals here. They got us in quickly when we needed it also. Keep up the great work! read more

So glad to have found this veterinary practice. Sunset Veterinary, Dr. An and the staff were all great when I took one of my pets. They were able to fit him into the schedule, which is greatly appreciated. Dr. An listened carefully and thoroughly explained what might be going on with my dog, possibilities and options. I never felt rushed or pressured to choose services. The veterinarian obviously has a huge heart for animals. If you are looking for a new vet, look no further, this is the place! read more

The Dr and staff are friendly and professional. The facility is clean with plenty of parking.

Beyond happy with the service, professionalism and knowledge that Dr and team provided. Dr. An was very kind and took his time with assessing my dog Marley and making sure my dog was comfortable with him before jumping into examine him . During the mini procedure Dr.An would update me and letting me that my dog was doing ok. I would recommend to my fellow fur moms and dads. read more

I would highly recommend Sunset Veterinary Center! The staff were so nice and caring for our pet. Dr. An was very detailed with his diagnosis of what my pet was dealing with and labeled out very well thought out plans to get my pet back on track and healthy as can be. I thank him and the entire staff very much! read more

This is a great place! Everyone is nice! The vet is very knowledgeable, explains things thoroughly, provides options, and is very nice. The staff is great! Super nice people. I have changed to this office after my first experience. read more

From the moment I entered the lobby to the time my appointment was over the staff was kind and caring to me and my cat. The vet was gentle and patient with my cat. They are very upfront about pricing and they don't try to take advantage of you. Amazing place. Our family vet from now on! read more