Meet Our Team

Meet Our Veterinary Team

Meet the wonderful veterinarians and staff of Castlerock Pet Hospital. We take great pride in providing excellent care for your pets!

Our Veterinary Team

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Dr. Donnie Hoff

Owner, Veterinarian

How long have you been practicing?
Since 2013

Where did you go to school?
Colorado State University

What do you pride yourself in when it comes to veterinary medicine and/or taking care of your patients?
I take great pride in effectively communicating with clients about their pet’s health concerns and needs. Being able to convey complicated disease processes, treatment options, and patient prognosis in a way that makes sense to each individual client is of vital importance to ensure each pet’s well-being.

What do you like to do in your free time?
I enjoy carpentry, outdoor activities such as hiking, playing musical instruments (poorly), and spending time with my non-judgmental family members: Camber the cat (head honcho of the household, quite judgmental actually), two Bassett Hounds, Mayday (the 3-legged angel) and Amelia (the boss, 2nd in command, thinks she is 1st in command), a duo of tree frogs, and two sulcata tortoises, Morla and Morticia.

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Dr. Crystal Dupuy


Born in Austin and raised in Cedar Park, Dr. Crystal Dupuy graduated with honors from Texas Tech University and went on to receive her D.V.M. degree from Ross University in 2011.

While she has practiced from East Texas, all the way down into deep south Austin, she has always preferred to call this area home!

Dr. Dupuy has interest in soft tissue surgery, internal medicine, and histopathology.

Dr. Dupuy enjoys spending her free time with her young son and her three dogs, Ned, Bumper and Dougie.

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Practice Manager

I have been a part of Castlerock Pet Hospital for the last 12 years. I went to Texas A&M Central Texas and graduated with a Bachelor’s in Business Management. I have always worked closely with animals. I love my job. I couldn’t even think about doing something else. I take pride in creating an environment where people feel comfortable leaving their 4 legged loved ones with us for quality and loving care. I treat everyone’s pets like they are my own. Vet med is very special to me and very close to my heart. I love helping pets and people. I love seeing people’s faces when they pick up their pet from us. They are so happy to see them. It makes me feel good that we helped make that happen. I also take pride in knowing what the best products are out there for us to use and know everything about them. In my free time, I love to ride dirt bikes. I race 80-100 mile enduro races about once a month. I live on a 100-acre ranch. We have a working goat dairy and have just about every animal you can think of.

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Veterinarian Technician

I have been practicing for 5 years and still learning new things every day. I started going to online school at Cedar Valley College this year and will be achieving my Associate’s in animal sciences. I take pride in educating clients on what is best for their pets so that they can take the absolute best care of their babies! Though I am still learning new things myself, I love putting my new knowledge to use. In my free time, I enjoy lying on the couch, snuggling up with my dogs, and watching a good movie or TV series I’m currently binge-watching. On the weekends, however, I love to spend time with my friends and family whether it be out for dinner or at the bar for a good night of dancing!

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Lead Veterinarian Technician

I am a Vet Tech at Castlerock Pet Hospital. I have a German shepherd named Roxy and a Crested Gecko named Arty. I have been working with animals since I was 15 years old, where I started out in the Kennels taking care of the animals. Though that I had gained the knowledge and experience to become a vet tech. I have now been a Vet Tech for 4 years. I love getting the chance to work with animals every day, and making a difference in the lives of our patients and clients. Also, I like to ensure that our clients leave feeling informed and at ease after every visit. I believe in giving a personal touch in the caretaking of the patients so they are comfortable during their visits. My hobbies include photography, hiking, and listening to live music.

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Kennel Tech

I am a Kennel Tech at Castlerock Pet Hospital. I have a German Shepherd named Roxy. I enjoy getting the chance to work with animals every day. I also love getting the opportunity to be able to constantly learn new things about veterinary medicine every day. My hobbies include welding, playing basketball, and playing video games.

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I went to PIMA Medical Institute Las Vegas, NV campus. Although I take great pride in caring for all of our patients, I have a special soft spot for geriatric pets with chronic medical conditions. I tend to gravitate towards the white-faced, old-timer, arthritic canine, and spicy senior cats in kidney failure or diabetic most. On the opposite end of the spectrum, I have a keen interest in neonatal kitten care and husbandry. Having experience in the veterinary field of not only general practice but specialty medicine and emergency, I take pride in sharing the knowledge and tricks I have gained over the years to clients and colleagues alike.

Now that I’m out of the desert I have started to dabble in some fruit and vegetable gardening. Was drowning in cantaloupe, okra, and cherry tomatoes last year, definitely planning better for this year. I enjoy cooking and trying new recipes from Pinterest. Love summer weekends at Lake LBJ with my in-laws, boating, hiking, and exploring new areas in Texas. Squished on the couch under two basset hounds and our cat is probably where I spend too much of my free time though, but love my three and four-legged kids.


Veterinary Technician

It started with the Animal Planet channel that I knew as a little girl my life’s passion would gravitate towards animals, and that I wanted to become a veterinarian technician.

I started my journey in 2015 working as an animal caretaker at a pet store and then moved up to a SPCA kennel technician in 2016. I joined my first vet clinic in 2017 and have since completed my Vet Assistant certification through Animal Behavioral College in 2018. Future plans would be to further my education and go for Registered Vet Tech license. I couldn’t imagine being involved in another career. I thoroughly enjoy learning and improving my technical skill set and taking care of all patients.

When I’m not working, I am petsitting on the side or simply relaxing at home with my husband, daughter, and our lovely zoo of animals. We have 4 dogs (Baby Girl – chihuahua mix, Odie – corgi mix, Maycie – terrier mix, and Duke – labrador) 2 cats (Nermal and Blinkin’) and also 2 chinchillas (Lucy and Lilly).

I’m so grateful to have joined the Castlerock Pet Hospital team and look forward to attending to you and your pets needs.

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Veterinary Technician

I’ve been working at Castlerock pet hospital for 4 years, I am also a foreign veterinarian from Nicaragua and came to Texas to expand my knowledge in the Veterinary field, I have a pity name luna and my husband and I welcomed our baby girl in March 2022, I love working with puppies and active dogs, I love a challenge and learning about the progression of the veterinary field, my hobbies include cooking, baking, going to concerts, going to the beach and scuba diving.

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Veterinary Technician

For as long as I can remember, I have always been in love with all animals. I was constantly bringing home stray, sick, or injured animals. I am a Missouri native and served in the military from 2006 to 2011. I completed my Vet Assistant Certification at Dallas Community College in 2018 and began my journey as a Vet Assistant in 2019. I am currently working towards my Veterinary Technician degree. I enjoy learning everything I can about animal medicine, and helping owners makes me truly happy. I have a Dachshund Pomeranian mix named Bean, a boxer named Luna, and a cat named Minnie. When I am not at work, I enjoy spending time with my husband and our son, as well as fostering kittens.

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Veterinary Technician

I graduated from PIMA Medical Institute with my Associates in Veterinary Medicine for Technicians. Shortly thereafter, I secured my first job as a vet tech in a general practice clinic in 2017. In my spare time, I worked at the El Paso, TX Zoo with reptiles and other large animals such as elephants, lions, and tigers. After a couple of years, I began working for an exotic general practice clinic where I truly discovered my passion for all things exotic, particularly reptiles. Currently, I am the proud owner of 2 Reticulated Pythons (Impera & Honey), a Burmese Python (Belle), a Ball Python (Ghost), a Sulcata Tortoise (Munchies), and a very handsome Tegu named Tobias. Additionally, I have 2 German Shepherds (Hera & Hades) and a Shiba Inu (Zero).

After spending my entire life in El Paso, TX, I relocated to Austin, Texas in April of 2022. I found my heart clinic here at Castlerock Pet Hospital, where I have been ever since. When I am not working, I am a full-time hyper-realistic reptile sculptor.

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Veterinary Technician

My name is Miggy. I’ve been a technician since 2017, and I share my life with 6 dogs and 2 cats. I have a special affection for poodles, doodles, and cats <3. In my free time, I enjoy reading, spending time with friends and family, and playing video games. I have experience working with both large and companion animals. My favorite aspect of being a technician is not just caring for puppies and kittens but also providing extra TLC to older and geriatric patients. I take great joy in helping clients understand and meet the needs of their older pets. There’s nothing quite like witnessing patients return home happy, healthy, and comfortable! I’m passionate about learning new practices that can extend pets’ lives while enhancing their overall quality of life.

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Lead Customer Service Representative

I have been an animal lover my entire life, and knew I wanted to work with them from a young age. Growing up, I was fortunate to always have dogs, cats, horses, and various pocket pets. When I went to college, I went a different direction for a few years and received a degree in Recreation Resource Management and Law Enforcement at Oregon State University. However, animals still remained a large part of my life, and I ended up working at my first vet clinic while in Oregon as a kennel tech and then receptionist. I learned that I could utilize both my background in hospitality and my passion of working with animals together. I have been in the industry since 2011, and cannot imagine myself doing anything else. I love meeting and getting to know new pets and their people everyday, and enjoy helping to educate them on their pet’s care. It is important to me to ensure clients and their pets feel welcome and comfortable, no matter the reason for their visit. Outside of work, I enjoy baking, fishing, camping, and traveling to National Parks with my husband. We have also curated quite the crew of animals at home including three dogs, a siberian cat, a bearded dragon, a chameleon, two cockatiels, a green cheeked
conure, and two horses.

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Customer Service Representative

I am a customer service representative at Castlerock Pet Hospital.  I have worked in the veterinary field off and on since 1988. I have lived in the Austin/Leander area for 25+ years. I’m owned by 12 birds including 2 African Greys and a Sun Conure.  I also have  2 dogs.  A pity and a chinese crested/yorkie mix. In my free time I like to play board games, go out to restaurants, and hang out with my family. I have a new grandbaby that I adore and 2 grown children. Working with animals is a very rewarding job and I love what I do.