Dr. An was honest, compassionate, and very thoughtful about presenting care options with clear consideration of cost. We brought in an older dog who was already quite sick, and after an emergency illness we had already invested several thousand dollars into his care. We love our dog deeply, but we also have real responsibilities -- including mortgage and college tuition payments -- and we appreciated being treated with respect as we navigated those realities. Dr. An carefully explained the test results, recommendations, and multiple care plans, each with different options and price points, without pressure or judgment. I felt completely comfortable being honest about our priorities, our budget, and our goal of making sure our dog is comfortable and cared for with dignity. Of the three to four veterinarians I've visited in Diamond Bar, Dr. An stands out as one of the most honest, empathetic, and genuinely helpful. It is rare to find a provider who balances medical expertise with humanity so well, and we are grateful for the care and guidance we've received. read more

I can't say enough good things about Dr. An -- I honestly wish I had found him sooner. He's incredibly caring, patient, and you can tell he truly wants the best for your pet. What stood out the most is that he never pushes unnecessary tests or labs. Instead, he explains everything clearly, offers thoughtful recommendations, and helps you make the best decision without any pressure. The care my dog received here felt genuine, and the pricing is also very reasonable compared to many other clinics in the area. It's rare to find a vet who is both highly skilled and compassionate, but Dr. An is definitely one of the best. I'm so grateful to have found Sunset Veterinary Clinic -- it's our go-to from now on! read more

Thank you for making Mavis's first visit such a great experience. The entire staff was incredibly friendly and attentive. Dr. An provided valuable, breed-specific preventive care advice for Mavis, which I truly appreciated. Scheduling the appointment was also quick and easy. read more

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

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I absolutely love Sunset Veterinary and most importantly, it's Quinn and Harley approved! They're so attentive and truly take the time to know my girls by name. I really appreciate how transparent and honest they are with pricing. Having a personal, trusting relationship with your vet is everything, and I'm so grateful we found them. Thank you Dr. An and the whole staff read more

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I recently started bringing my dogs to Sunset Veterinary Center. The office shares a large parking lot with several businesses, but I never had any issues finding parking. The facility is also very clean and welcoming. I really love Dr. An and his team. They are all very compassionate, knowledgeable, and informative. I appreciate that they are honest and recommend necessary tests and treatment plans, without adding unnecessary things. Initially, I needed an exam for my dog, Sora, who has a corneal ulcer. Dr. An was also able to hear that she has a heart murmur that other vets haven't heard yet. I was thankful that Dr. An is thorough and checked everything and not just the eye. Very shortly after, my second dog, Riku, suddenly fell very ill. I was very thankful that they were quick to send me any tests and information for specialty hospitals I needed. Dr. An and his team called to check on him constantly between our visits to see if he was improving. Dr. An and his team truly go above and beyond, and I genuinely feel their love for animals and their jobs. I am so glad that I decided to bring my furbabies here, and I know that my dogs are in great hands with Dr. An and his amazing team! read more

It's very hard to find a Vet with good heart and all his employees do the same also. Dr An is the one. We have brought our dog and cat to see Dr An. Very detail oriented and he will explain very clearly of what needs to be done and he will take good care of your furry friends. Also his staff Carol, Terry and Vivian are all amazing, super nice and the most important is they care about your pets, especially Carol, super nice and friendly. Thank you Dr An and staff for always taking care of our family members!! read more

Everyone is so nice and kind. The consultations provide the pet parent with the cost of services before they're done. Dr An is a great vet,cans always listens to my concerns. read more

My pug has been seen here over the past two years for all his check up and vaccine needs. Prices are very reasonable, vet is very knowledgeable and front staff are very warm. 10/10 for customer attentiveness! Thank you Sunset Vet! read more

It's been more than a year since we've visited but I felt the need to give credit to an honest vet who helped us save so much money on our dog. My Aussiedoodle had a gnarly accident while playing with another dog and had a piece of flesh tear out from his side. He gave us options to avoid surgery and I was able to tend to the wound at home and his flesh grew back well without infection. Really appreciate when a vet is willing to do what's truly best for the customer versus what benefits their own pocket. Thanks Dr. An! read more

We brought our chi-terrier mix here, and the staff is professional and respectful of you. They were clear in explaining the illness, symptoms and treatment plan. There was no pressure to spend money, yet they will offer different qualities of treatment plans, and are happy to answer any questions. read more

I only wish I had found this vet sooner. In the last two weeks of my dog's 20-year life, the care, compassion, and respect we received meant everything. The doctor guided me through such a difficult transition with kindness and patience, and the staff was equally amazing and supportive Thank you to the vet and the entire team for the way you cared for both me and my fur baby. I highly recommend this clinic to anyone who wants the best for their pet. read more

A long overdue review for a truly exceptional veterinary clinic. I have been bringing my Pomeranian, Maltipoo, and Poodle to Sunset Vet for some time now, and I am consistently impressed by the level of care and compassion shown by every member of the team. From the moment you walk in, you can feel that the staff genuinely love animals and treat each pet as if they were their own. Dr. An is one of the most dedicated and thoughtful veterinarians I've ever met. He takes the time to thoroughly explain any concerns, answer all of my questions, and most importantly, he always follows up to check on how my pets are doing after a visit. That level of attention and care is rare and deeply appreciated. Over the years, I've been to many veterinary offices, but Sunset Vet is truly in a class of its own. Their professionalism, kindness, and consistent follow-through make all the difference. It's clear that this clinic prioritizes both the health of their furry patients and the peace of mind of pet owners. I'm so grateful to have found a place where my pets are not only well cared for but genuinely loved. read more

Sunset Veterinary Center - Technicians showing so much love to our fur babies - Veterinarians Near Me - Diamond Bar, California

We loved Dr. An and his staff!!! They were so professional and so caring! We appreciated he wasn't pushy for certain services. He was gentle with the dogs!! Highly recommended!! They are definitely our new vet!! read more

Sunset Veterinary Center - Our dogs waiting for their checkup - Veterinarians Near Me - Diamond Bar, California

Everyone is so nice it's crazy. Almost too nice... haha jokes. Every person you meet is an animal lover and very friendly. We are, so far, impressed with the service provided for our maltipoo read more

I've reviewed this place before, but I can't help but say great things about Sunset Veterinary. I called at 8am, and they were able to squeeze me in by 12pm for my dogs ear infection. They NEVER overcharge, are always friendly, and are extremely professional. I will visit Dr.A for as long as I can because I love this office! read more

I'll start this off with I'm *very* picky about vets. Over the years I've had several very negative experiences with other vets from being dismissed to not getting proper treatment. Sunset Veterinary is THE place to go!! Not only do the staff always do a great job of making us feel special (remembering my dog and specific details about him), the quality of care is unmatched. They are never dismissive, they look at my dog as whole instead of just treating the symptoms they look for root causes, and if they're unsure about something they take the time to look into it and get back to us with options. On top of that, they're not pushy with treatment plans, they give a variety of options and always answer questions so you can make the best decision for you and your pet. HUGE BONUS, I came in one time and decided against some of the options (a B12 shot) and they asked if they could give it anyway, free of charge. To me, this gave me such confidence that they not only truly care about my pets well being, but that they don't just push treatments to get more money. I can't say enough good things! Really the only downside is they don't perform surgeries, I wish they did because I trust them so much and it's hard to find such quality care. read more

After having a horrifying experience at a different vet with a dog we were fostering, I lost all my trust in veterinarians. I didn't feel safe bringing my babies anywhere, but I heard this place was different. They were right!! From the moment we entered, the entire experience was streamlined, with good communication from both the staff and the vet. We were placed in a room right away and I noticed that the rooms were really clean. They even provide a towel on the cold surface (attention to detail!!) while other vet clinics just have my dog sit on the cold metal table. Dr. An is truly an amazing vet. He took the time to explain my dog's possible diagnoses, we went through every small detail on his xray, and Dr. An even left me ample time to ask any lingering questions. I understand that in the medical field (for both humans or animals) sometimes it's difficult to give each patient enough time, but Dr. An never rushed us and made us feel so cared for and heard. He is a wonderful vet who does his job not for the money, but because he wants to help anxious pet parents feel better in a stressful time. The vet techs/staff also went above and beyond to help me with my pet insurance as I was not familiar with how it worked. I did not once feel like they suggested any nonsensical treatments, and they repeatedly reassured me that I'm free to choose whatever feels right or is within my budget. As a student, it's difficult forking out hundreds of dollars for unexpected bills, but I had no regrets at the end of the day because I felt like my dog got the top quality care he deserved. One last thing I love about this clinic is that they follow up with you for free!! The previous vet from hell (Chino Hills Animal Hospital) we went to had not spoken to us at all after a $5000 2 night stay and refused to speak one sentence to us unless we paid another $100 for visit fee. After experiencing that, coming to Sunset was like a breath of fresh air. Thank you Dr. An for being the kind and compassionate vet we all wished for, and thank you for prioritizing the health of my baby! read more

Thank you Dr. Phil and everyone working there!! Stoney needed a check up and he was very well taken care of. The staff and Dr are all incredible. I live about 30 miles away and I don't mind making the drive out to Diamond Bar for Stoney to be seen. My previous dog was seen by Dr. An for many years. I spent $$$$ at other vet locations who misdiagnosed Tubby, and charged me ridiculous amount of money for medication. When I finally changed to Dr. An at another location he was working at, he wanted me to try out a different type of food and simple methods to see if things would change. I knew if I had another pet after Tubby, he would be the veterinarian for us again. Thank you!! read more

Sunset Veterinary Center - Stoney being curious - Veterinarians Near Me - Diamond Bar, California

I called this morning at 8am, worried about my mini schnauzer and they were kind enough to squeeze us in by 9am. From the second we walked in, the staff was so welcoming, thoughtful, and incredibly caring. They treated us with compassion and made me feel seen during a really stressful moment. What stood out the most was their honesty and transparency. I let them know I was tight on funds, and instead of pushing expensive treatments, they gave me realistic, alternative options I could manage from home while also being clear about when I should return if things get worse. That level of care, understanding, and integrity isn't something you find everywhere. I'm so grateful we found them read more

Best Vet clinic I've ever been to. Love how they call pet parents "mama"! Staff are compassionate and friendly and Doctor is kind and very professional. I'm so glad we found this clinic! read more

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Very responsive and upfront about fees. We've been a few times with our beagle and have appreciated the vet and staff. Very professional and caring. read more

They deserve all the stars in the world! This review comes with a heavy heart. My son Kobe has just recently past. I started to go to SVC when they first open I believe back in 2022. I was so frustrated with my baby's skin allergies. I've been to multiple vets and did multiple blood test, tried multiple meds and nothing helped. It didn't help my son never likes to go to the vet. Until, I found Sunset Veterinary Center. The staff are amazing and wonderful. They are very friendly and love my son. He would go to the vet at easy. Before he would shiver and refused to go. Since he's been with Dr. An and his staff, he has been very happy and don't mind going to the vet. He knew the protocol of stepping on the scale getting his weight and entering the rooms. What I love about this office is that they don't push you for treatment. They explain things throughly and all mentions certain things can get quite expensive. My baby had the worst allergy. No matter what I do his skin was horrifying and I had no idea what to do. Mind you he was probably 11 years old. When I first visited SVC. Previously his skin was fine. So we did a blood allergy test. I was warned by Dr. A that an allergy test was costly and that the results aren't always accurate. Turns out my son was allergic to everything in this world besides corn, chicken and lamb. I tried to cut down everything from his diet. And that wasn't left with much. But we pulled through his skin started to look better under Dr. An's treatments. Dr. An is friendly and patient. Every time I comeback. I always make the joke. My son is allergic to life. Since he's allergic to everything and keep growing in age. He's about 13.5 years old. He always listens to all my concerns and have a treatment plan that is explained throughly. He doesn't upscale his vet services. He takes time out to explain each one and why it's needed. We've tried so many different meds and antibiotics because of my son's skin infection/ allergy. He also tells me oh this med Cetirizine is Zyrtec so you can buy this outside no need for me to prescribe since it over the counter. My son's favorite tech of all time is always Carol! She lovely and always baby's him. She always baby talk him. Which I guess that's why he loves her so much. She treats him well and gives him a lot of pets and affections. My son usually don't follow anyone. But he ended up following Carol every time. Whether it's to the back for treatment or into the exam rooms. That says a lot that Carol treats him so well. He's willing to follow her. Knowing she won't harm or hurt him. My sons's next favorite would be Terry. Terry has always been very nice and friendly. He's always very patient and treat my son very well. He sometimes follow Terry but not all the time. Sometimes I would need to help them walk him to the back. Terry also treats my son very well. Terry always helps me to trim Kobe's nail. My boy refused to let mommy do the cutting. All in all, his staff are amazing. They treat your pet as their own and show them love and affection unlike most vet places. Now the heart breaking part. Kobe has been having some problems with pancreatitis. I had to take him to an Emergency vet else where and when SVC was within office hours I brought him back to them. When I picked him up from the other vet Kobe wasn't really happy. When we go to the other ER bet he was anxious and restless. I dropped him off at SVC to be hospitalized around 9am. And picked him up at 4pm. When I picked him up from SVC he was full of energy. Very happy and excited. It was as if he went on a play date instead of being hospitalized. That's how much he enjoyed his time with every single person at SVC. Sadly, he had to be hospitalized at another ER because it was after hours and had passed on. However, I'll surely be back and recommend SVC to everyone for how much and truly they care about your pet. Highly recommend! I've been going to SVC for about 2 years, so everyone here is like family. I appreciate all the efforts they have made to help my son. I thank them for giving him an ease to go to the vet. And I appreciate they gave him love and affection in his final days. Thank you for everything read more

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I am BEYOND happy that I found Dr. An and his amazing staff. They are the absolute best! We have an almost 8yr old Rottie and a 2yr old Corso who have inevitably gotten some injuries and ailments over the years. The staff at Sunset Veterinary has been extremely helpful, knowledgeable and accommodating when seeing and treating our boys. They're really good at recommending a more conservative (and therefore budget friendly) approach to start, then more aggressive treatment options if needed. They always follow up to see how our boys are improving and update us on their vaccines and any new relevant recommendations. I've dealt with some crappy vets during my Rottie's early years so I'm beyond happy to have found Dr. An's office and we are definitely here to stay. It's a noticeable difference in my dogs demeanor with this staff versus other past vets. Seriously cannot recommend them enough. Save yourself and your pup any trouble and just book with Sunset Veterinary, seriously. You'll give yourself so much peace of mind. read more

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

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I have three small dogs. One is diabetic and the other has an enlarged heart that required surgery and ongoing meds. And of course purse, one healthy one. Dr An and his staff have taken over the care for my babies and are very caring and thorough! read more

To Dr. An and to the entire team at Sunset Veterinary Center, Yogi and I appreciate all of you! Dr. An and the entire team are always welcoming, caring, and so, so, friendly when Yogi has to go in for all of his necessary medical needs. Yogi's last treatment was to check his right eye. As anyone can imagine who have fur babies, I was worried sick. But with the recommendations of Dr. An and the excellent care of all, I am confident Yogi's on the road to recovery. They always put in 100% effort in getting the medical needs of Yogi met and taken care of. For all of the reasons above, I highly recommend bringing your fur babies in for any and all necessary medical needs. Yogi recommends other fur babies to come in too!:-) read more

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I love Dr Ahn and his team! We have 3 dogs and this is our go to place for Vet! We live in Ontario but I make the drive here because of the service!!! read more

When've seen Dr An ever since he was at another animal hospital ~8 years ago. Now that he has his own practice we decide to bring our new dog here. Dr An has always had great bedside manners and always takes time to patiently answers questions and address all. concerns. He is very knowledgeable and up to date in his practice. We like that his office provides a very tranquil atmosphere. Our current dog is a very anxious doggo but he is very calm while here. Would highly recommend this vet. read more

I am beyond grateful to have found Sunset. 10/10 vet, which is very hard to find. The doctor and staff are knowledgeable, attentive, kind, and truly care about their patients and pet parents. They take the time to explain and answer all questions with transparency. We unfortunately had to go through a difficult decision to say our final goodbyes to our sweet boy. We are appreciative of all the support Sunset gave him during that time and the time leading up to it. Wouldn't want to take my fur babies anywhere else. read more

This was the best vet clinic I've been to! Everyone was soooo incredibly nice, accommodating and understanding, especially having a reactive dog. It really puts us at ease that we're in great hands and with people who actually love and care for our pets. They were so gentle with my dog, letting her warm up so they can examine her. Nothing felt forced or rushed. And the doc was thorough with the exam, very informative, and super professional, making sure he answered all my questions and concerns. Definitely coming back for our annual blood work and vaccinations going forward! Thank you Sunset Vet Center for an awesome experience. Lola and I appreciated the kindness and patience everyone showed! :') read more

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

Wonderful staff and doctor. They know what they are doing, they explain it well, and they don't up charge you for extra testings you don't need. Overall, this has been hands down the best Vet we have been to. read more

I mean to write this review after every experience I have with Sunset Vet. I bring both of my boys here often due to chronic allergies and for one of my pup's with behavioral issues. Dealing with a dog with behavioral issues is a struggle and the support I get from Sunset Vet is so comforting. Everyone here is compassionate and you can just tell they all truly care. They are accommodating and make every process so seamless. I know I can call for any questions for help and always get to speak with the nicest staff. I can't say enough good things and I'm truly grateful to have found such a wonderful vet. read more

Pet parents - this is the place to come! This is a new vet center, but rest assured you and your pet will be well taken care of. I brought my pup here for a visit and the staff were very welcoming, friendly, and attentive from the start. The space is also very clean! We were brought to a room for some quick triaging and temperature check by Carol, then Dr. An came in after. Dr. An takes the time to really listen, assessed my pup and then explained options available, and any associated risks. He is very considerate and respecting of what you decide and there was no pressure to buy unnecessary services or products. Even when I opted in for certain procedures, they are very honest when they were unable to take a sample (due to my pup's anxiety) and removed the charge. Making a seamless experience, they are able to do some procedures right away in a back room. Well appreciated! It's hard to find healthcare practitioners that are as good as Dr. An and his team. Now I've just got to find a human doctor as good as him! read more

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

My golden doodle and I came for his appointment in July last month and were pleased with the quality of service provided here. We came for his annual check-up and were immediately greeted upon walking in. It's a relief to see how clean the lobby is, compared to other vet clinics covered with so much dust/fur all over the floors. Thank you for such a welcoming environment! Every single person we encountered was friendly, approachable, and easy to speak to. I highly recommend Sunset Vet Center if you are looking for the best possible care for your pet! read more

Excellente customer service. Very clean. And profesional. People answer all my questions prices very reasonable

Very happy I brought my pups here. The staff and Doctor were very kind, welcoming and knowledgeable. My pups were very excited and happy, they got along well with everyone and were happy to return. Thank you! read more

This was me and my cat Mochi's first vet visit! We were both super nervous about this, but the staff and Dr. An were so amazing and made us feel comfortable. My cat went for a wellness visit and to update her vaccines. Dr. An was super great to explain everything he was doing, he clearly had a lot of knowledge and was super patient with all my questions and my cat who decided to hide between the examination bed! My cat came home and went back to business as usual, I was worried she may be really stressed or traumatized from the experience and start hiding, but she was completely normal after. I think the staff made her feel really safe and that helped her when she came back home. I can't recommend this vet enough. I look forward to working with them again in the future for all my kitties needs! read more

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

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I can not recommend this place enough. On March 14 I lost my beloved baby. I walked into this facility praying they would take him after every other facility declined him care due to not having an appointment. The staff was so accommodating and caring to my family and our beloved brother. I went in today to pick up my baby boys ashes and I can truly say they went above and beyond. Thank you so much for everything! We will be bringing all our babies here now. read more

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

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My partner and I have tried many different veterinary clinics in Diamond Bar and Sunset Veterinary Center is the best! Our month and half kitty started limping and we took Remi to Dr. An and his team. We found out she had a swollen arm and a high fever. They provided her with the proper help, splinting, fluid sacs and medications. Remi got back to good health in less than a week! Dr. An and his team are professional and treated Remi and our other cats with the upmost care. read more

Sunset Veterinary Center - Remi splinted by Dr An and his team. - Veterinarians Near Me - Diamond Bar, California

By far the best vet in the area. Everyone is incredibly professional, sweet and treat you like their own family. We've been taking both our dogs to them since they were pups. They only give you what you need and are always super accommodating. Everyone there truly cares and has so much patience. I will never go anywhere else or trust anyone else with my pups but them. read more

A BAJILLION STARS OUT OF FIVE Dr. An and his entire staff were so warm and kind-hearted - I'm tearing up just writing this review. From my initial call to make an appointment for our giant fur baby to the minute I stepped out the door after the appointment, the warmth and kindness that they showed went above and beyond. Dr. An was so thorough with his explanations and made sure we felt comfortable with every step. He made sure to give multiple options as well. We never felt pressured to make any decisions either. The transparency in the extremely reasonable prices was greatly appreciated, and the communication between Dr. An and his nurses was AMAZING. I never had to repeat myself, which was a huge relief because it was difficult for me to talk about my dog's condition without breaking down. I loved the gentleness of everyone at Sunset Vet. Center, and everything was so spotless and clean! The hand lettering of my dog's name on his medicine baggie was the cherry on top. Thank you so much, Dr. An and staff!!! read more

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

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