Welcome to the Oakton-Vienna Veterinary Hospital

Where Doctors and Staff strive to provide uncompromised professional health care for your pet through personalized care, a "Standard of Care Concept" that requires several unconditional commitments on our part:

1. We commit to do our best to give you and your pet our undivided attention and to make you feel welcome and comfortable during any visit to our hospital;

2. We commit to always offer the same compassionate quality of care for your pet as we would provide for our own personal pet in the same situation; and

3. We commit to provide you with understandable answers to your questions and a complete explanation of our services and recommendations involving your pet.

We invite you to allow Oakton-Vienna Veterinary Hospital to become your partner in providing the finest healthcare for your pet.

With the aid of qualified, conscientious healthcare professionals, pets can enjoy much longer and vibrantly healthy lives. We look forward to helping you enjoy the happiness that a healthy pet provides.

Emergency Veterinary Care 24 hours per day 365 days per year.

What do you do if your pet becomes ill or injured in the middle of the night or when your family veterinarian is closed ?

Waldorf Emergency Care is always available to help.

Our highly qualified emergency veterinarians have over 35 years of combined experience. They work side-by-side with a skilled staff of veterinary technicians and veterinary assistants that excel in providing prompt, cutting-edge veterinary care to even the most critical patients while using the latest technological advances.

They are fully capable of managing a wide variety of emergency cases that range from minor to life-threatening. Our goal is to ensure that pets receive compassionate professional and quality emergency care whenever the need arises, It is with this, that we aim to keep the prices reasonable and of value for the costs.

Our Mission -

Instill in our staff the necessary elements for exemplary patient care and client service. In every case our goal is to exceed your expectations in clinical and client service and to become a valuable and trusted resource for the community.

St. Charles Animal Hospital has been providing quality veterinary services including wellness examinations, vaccinations, diagnostics, surgery, grooming and treatment of illnesses and injuries to companion animals in the southern Maryland area since 1978. We have a Board Certified Veterinarian at our hospital to serve you and three other highly qualified veterinarians as well.

At St. Charles Animal Hospital, we understand that your pet is more than just an animal – your pet is a part of your family and we are committed to providing the quality care that they deserve and that you expect.

The Pender Veterinary Centre is our general practice at Pender, where dogs and cats can receive the best in surgical, routine and diagnostic care from our esteemed team of 27 veterinarians. Whether you’re bringing your kitten in for a routine check-up or you’re interested in learning more about oral surgery procedures that could benefit your dog, your companion animals receive the highest standard of care from the veterinarians, nurses and technicians at Pender Veterinary Centre.

Dulles South Animal Emergency and Referral Hospital is dedicated to providing emergency and critical care services for your companion pets. We are located within the new Dulles South Veterinary Center.

Animal emergencies, much like human ones, tend to be unexpected and often occur outside of regular office hours. Dulles South Animal Emergency will ensure that your pet’s medical needs are met regardless of the time or day of the week. We will partner with both you and your primary care veterinarian to provide overnight observation, after-hours emergency services, rehabilitation & laser therapy, emergency surgery, as well as critical and intensive care to meet your pet’s needs.

From admission to discharge, we keep your veterinarian informed so your follow-up appointments with them are seamless.


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We enjoy being able to enrich and lengthen the lives of our beloved pets, who have become our adopted children, with modern medicine and technology. Our focus includes betterment of the quality of life of our pets...

Automatic lift tables for senior pets
Pain management
Rehabilitation
Underwater treadmill
Use of proven alternative therapies when practical
Ultrasound
Complete anasthesia monitoring (including mechanical ventilator)
Heated surgery table
Heated iv lines
Endoscopy
In-house lab (we also send more complicated tests to specialists with 1-2 day results)
Some conditions and emergencies require immediate answers. We have a variety of sophisticated lab machines that we can use. We have the latest complete blood cell count analyzer utilizing laser technology for improved accuracy. This can tell us information about the number and types of cells in the blood. Many conditions alter these from normal.

Tests for: electrolytes, blood-gas, thyroid, coagulation profile
We can also do a variety of “chemistry” panels that can tell us if some of the major organs in the body are affected by a condition

Digital radiographs (x-ray)
We use state-of-the-art digital radiology in the hospital. These images can be enlarged, highlighted, and enhanced using our software. This increases the diagnostic yield many fold and can help us see things we could not see before with standard radiology.
In addition to viewing the images we can burn them to a cd or we can transmit them to specialist radiologist for consultation and recommendation.
You can even access your pet’s x-rays on-line from your own computer 24/7

We've received many client testimonials over the years, here are some of our favorite:
Homeless animals rescue team: "everyone of our volunteers who works with you loves you!"


Dr. Chau, just wanted to drop you a quick note to thank you for all of your kindness, understanding, vast knowledge and genuine care and concern you have shown towards me and all of my "girls." these dogs mean the world to me, and when you advise me on how to treat them, i have full confidence in you, and know you have our best interest at heart. Thanks again ever so much for everything!


For a wonderful vet: thanks for all the tlc and kindness that you've shown, you care for other people's pets as if they were your own.


Dr. Chau, we just wanted to thank you for the sensitive, caring way you handled the end of our cat's life. You've always been a compassionate, gentle doctor, and we hope you know how much we appreciate your kindness. The verses of this card sum up our gratitude for your kindness and understanding while treating our cat midnight. Its so nice to have a vet who cares so much. Its been rough not having him with us, but knowing that in time, there will be another who will need us as much as midnight did gives us something t look forward to.


I am very thankful for dr. Chau for helping me out on a sunday, so that my little bird didn’t have to suffer anymore. The bird took well to dr. Chau, which she never seem to do with others. God bless you. I may use you in the future? If i get another bird. Thanks.


You are one of the most loving and caring people i know, and all of the animals you will be treating are the luckiest animals in town! I (personally) wish your practice was closer to me, or me closer to you as i would then know my animals had the best care available!


Dr. Chau, i just wanted to write and thank you for all that you did for chelsea. As you know, we had been to other vets and specialists prior to seeing you. Every place we went we were told to give her medications, see how she feels in a couple of days and so on. We, knowing the real chelsea, knew there was something very wrong. When we finally came to you, after one to two months of watching chelsea deteriorate, you figured out what was wrong and took care of it in three days. Not that money matters when it came to chelsea, you did what was necessary and best for chelsea, not what was best for your practice. I can’t express to you enough the feelings of gratitude we have for you to end chelsea’s suffering. You have an incredible knack for balancing the way to handle this terrible matter. You were straight forward, yet extremely caring. Chelsea was definitely loved and will be missed greatly. We will cherish the 6 years of memories we had with her. Once again, from the bottom of our hearts, thank you.


We are thankful for you hanh, your kind, compassionate spirit has been a true blessing to our practice.


Dr. Chau: you would be thrilled to see willy as he "trots" off for his morning walk! We notice he is more restful, pants less, and is really like his old self. The swelling seems to be gone in the leg as well. We tested his back legs as you did by turning his paw under and he immediately responded and corrected his stance. We tell all our pet owner friends about this amazing turnaround and will look forward to continuing the therapy. The new home cookin' menu has also improved his stool, and both dogs seem to have a new reason to live! Thanks for your good holistic approach to improving the quality of life for our "boys"!


Dr. Chau: amazing change in willy! He left your office and when we opened the back end of the car, he jumped in! He has had a great improvement in his ability to walk steady and this morning, instead of just going outside for a quick relief as in the past few days, he led us on his usual path for a walk. He is loving his food (eggs, chicken, rice made with home made chicken stock and veggies), and he seems less stressed (more at rest without panting so much). I can't thank you enough for the acupuncture session and your personal interest in his case. I have heard that people benefit from acupuncture, but i admit to being a skeptic until now! What do you suggest for future sessions, and of course, we would want to pay you for them. Please let me know that you have received this email as i am not sure of your address. Your fan…


Dr. Chau, you might think that what you did was a little thing because you do so much for others all the time, but it is rare to find people as considerate and thoughtful as you. Thank you so very much for taking care of taz the way you did. He healed nicely and is back to his own self. It meant so much to me what you did-no words can express my gratitude...


Dear dr. Chau, thank you for taking such good care of henry and for your support during a very difficult time for us...

Thanks so much for pulling spice through a serious ailment. He finished all the medicatoin and seems to have bounced back to his normal self. We'll continue to keep an eye on him, but for now he is a healthy, happy fellow! Thanks again...

Dr. Chau and staff, puffy wanted me to send you a note to thank you for taking care of her and her health checkups. You were very good to her when she visited you. Now, she is resting in peace and happy in a nice aradise with tons of pets to play with. I missed her terribly! Thank you for everything! Fondly memories...

Dr. Chau, thank you for everything you did, and your effort and kindness you showed to owl and wade that helped us to enjoy him for much longer than we would have. We really miss him. He was a great pet. Thank you so much, we love you, ...

Dear dr. F..., you came thru again. Max was very sick and i had just came home from the hospital after major surgery. My wife g_ showed me max's ear and knew something had to be done pretty fast.

We decided to take him, i was unable to help her she took max in and dr. Chau took him right away and told my wife she would operate and that he would have to stay all night. Dr. Chau was so kind like it was her dog and the technicians especially the young man who my wife was very impressed with.

Dr. Chau called later that night to let us know how he was, and that we could pick up between 10 & 12 noon. She had told my wife he would need a bath with special soap after he got home.

Someone was kind to give him a bath and they knew i had just came home from the hospital.

I look at him laying on the living room floor he is the most beautiful dog in the whole world.

Thanks again to dr. Chau and to your office staff and technicians...


Dr. Chau, i don't know if you remember me, but i job shadowed you on november 9. I wanted to thank you for taking time out of your schedule to help me with this project. I really appreciated it. I feel that i learned a lot from watching you work. It helped me to realize that if i do become a veterinarian, i would want to focus on surgery. That, to me, was the most interesting part of my visit... Once again, thank you very much... Student at magruder high school

Dr. Chau and staff, thank you very much for allowing me to job shadow you. It was a very interesting and exciting experience. I enjoyed it very much and i'm so glad you took the time to show me how great it is, to be a veterinarian, [student at magruder high school]


Dear dr. Chau, thank you for giving me the opportunity of job shadowing you. It was a great experience for me and i enjoyed it very much. Hopefully, i'll get an a.


Dear dr. Chau, i am writing to thank you for conducting such an interesting, informative, and fun tour for our group, the montgomery home learning network. Children and adults alike enjoyed themselves and learned a lot too!

We appreciate that you took the time our of your busy practice to prepare everything so nicely and spend time answering all the questions too. I'm sure you inspired a few young "vets-in-training" in our group too! Keep up the good work!


Dear dr. Chau, we really enjoyed the tour. My favorite part was your lizard and your cat. We liked your cat's heart-beat. Love... [added by parent: we were there in april with a homeschool group.]


Merry xmas, we want to thank you for caring and taking care of us thru out the year, we love you.


Dear dr. Chau, thank yo uso much for taking care of my guinea pig, hans, when he was so sick. It really meant a lot to me. Your work is appreciated. Hope your summer is great.


Dear dr. Chau, d_ and i want to thank you for your patients and kindness while helping tori during his illness. His last 9 months were happy because of your help. Thanks again. Enjoy,


Dear dr. Chau and ..., thank you so much for the lovely rose arrangement. Your thoughtfullness is greatly and sincerely appreciated. Life hasn't been the same without my kitty, suzie, but life has to go on. I can't thank all of you enough for the warmth and caring you have shown me during this difficult time. In addition, i am so content to know that suzie received the best of care from all of you. You're more than veterinarians and associated staff - you're a wonderful bunch of caring human beings. Appreciatively...

Dear dr. Chau, pepper was in to have her blood work done and it just wasn't the same without you! Pepper was not happy about seeing dr. F and i think he could tell it. You were so good with her and so nice to us. When we found out you had left the office we felt like we had lost a member of our family!

Thank you for all of your kindness and expert knowledge. We wish you the best in your new practice but hope you get tired of it there and come back home. Thanks again for everything!



Hanh, i'll never be able to thank you for all you've done for us. You helped make the transition in our lives more bearable. Thank you. With love...


[letter written in first person from pet's perspective. Golden retriever after surgery for cancer] dear dr. Chau, i don't know if you remember me. You took away a sick spot on my shoulder last year. It got all healed and i improved so much that i got to have some little babies. I had 6 little babies (3 boy babies and 3 girl babies. They came to me on january 7th. They're so pretty. My human mom and dad agree. We all wanted you to know about my little family. We thank you so much you're a real good doctor...

Dr. Hanh chau, thank you very much for taking such good care of my dear friend ashleng. She means a world to all of us. Thank you for your compassion, understanding, and caring to let me know how she is doing. You are truly a professional. You truly set a good example to all doctors. It will be a merry christmas now that she will be home. Merry christmas.

Dr. Chau, we just wanted to thank you again for all that you've done for us. We feel like we are losing not only a wonderful vet, but a friend as well. You've always been there when we needed you and have always appreciated your honest and caring opinions. We wish you all the best in your new endeavor. Your the best! Love...

Dear Dr. Chau, thank you so very much for personally caring for our "bottle babies" recently! Warm regards, the hart cat program