Meet Our Team

Our Caring & Compassionate Veterinary Care Team!

Meet the Veterinarians & Team of Westside Animal Hospital in Casper! We’re pleased to provide exceptional vet care for your pets!

  • Dr. Doug Johannessen

    Dr. Doug graduated from Ross University School of Veterinary Medicine in 2006. He worked in research at Pfizer Inc and the National Institutes of Health/National Institute of Allergy and Infectious Disease before moving to private practice in California. In January 2013 Dr. Doug and Dr. Laura became the new owners and veterinarians at Westside Animal Hospital. It has certainly been quite an experience watching the clinic grow! Dr. Doug enjoys practicing general veterinary medicine and surgery, especially with a dedicated and caring team who are always looking to improve their clinical knowledge and skills. Along with Dr. Laura and two children, Dr. Doug shares his home with their dog Nopey and cat Isabella.

    • Education: MS DVM
    • Hometown: Greensboro, NC
    • Pets: Isabella, Nopey

  • Dr. Laura Johannessen

    Dr. Laura graduated from Ross University School of Veterinary Medicine in 2007. She worked at San Luis Rey Equine Hospital, an equine speciality hospital in southern California, as an intern for one year and as a clinician for three years. She worked at Tammany Veterinary Hospital in Corvallis MT as an ambulatory horse vet before moving back to California to practice small animal medicine and surgery. In January 2013 she and Dr. Doug became the owners of Westside Animal Hospital. Dr. Laura enjoys practicing general veterinary medicine and surgery, and excels at challenging medicine cases. She enjoys working with the caring and dedicated Westside staff. Along with Dr. Doug and their two children, Dr. Laura shares her home their siamese cat Isabella and mix rescue dog Nopey as well as several chicken!

    • Education: DVM
    • Hometown: Baraboo, WI
    • Pets: Dog: Nopey, Cat: Isabella, 11 chickens and 1 rooster
  • Ashlee Patricelli - Client Service Coordinator

    Ashlee is a Casper native who joined Westside Animal Hospital in 2015 as our Customer Service Coordinator. She has a strong passion for all animals and has worked in the veterinary field prior to joining us. She is the founder of Wyoming Branded, which is an organization to promote and educate our local community about mustangs. Ashlee is also a Wyoming affiliate at US Wild Horse and Burro Association. She enjoys spending time with her mustangs Joker, Briggs and Titan, as well as her dogs Tonka, Bucky, and Mato and a handful of chickens. Ashlee never has a dull moment with her husband and 3 boys, as they all enjoy the outdoors of Wyoming, hunting, and horseback riding. We are so lucky to have Ashlee as part of our Westside family. 

  • Marishka Chudilowsky - Veterinary Assistant

    Marishka was born in California but has been a long-time Casper resident. She joined our Westside team in September 2015 as a kennel assistant and has worked her way up to veterinary assistant. Marishka is very passionate about animals and learning veterinary medicine. Her professional interests involve the more technical aspects of veterinary medicine, including placing intravenous catheters, dental cleanings, and lab work such as blood draws and in-house analysis. She also keeps our Facebook page current as a page administrator. Marishka's hobbies include spending time with her dog Bailey, cat Solo, and her horse Buddy, as well as traveling, hanging with friends, and horseback riding. 

  • Paige Lane - Veterinary Assistant

    Paige joined Westside Animal Hospital in the summer of 2016 as a kennel assistant. Paige has a strong love for animals that was obvious immediately. Her duties with us are endless but include caring for all of our boarding animals, answering phones, checking out clients, and giving extra love and attention to any and all of our patients. We are so happy to have Paige with us every afternoon following school. It warms our hearts to have the Lane family as a daily presence in our lives still. In the fall of 2018 Paige with begin attending Casper College to work toward her degree in nursing. 

  • Nick Williamson - Veterinary Assistant

    Nick joined Westside Animal Hospital in 2009 as a kennel assistant. Since then he has worked part-time in the afternoons, evenings, and weekends while he attended Casper College classes. Nick has a unique relationship with animals, and an ability to make them immediately feel more at ease in his presence. Our regular boarders get excited when they see him, and he can often be found either outside playing with a dog or snuggling with one of the cats in hospital for the day. Nick's constant smile is welcoming to our clients who have know him for years. Nick is family not only to us, but to so many clients and their pets. Nick's pets include his dog Tulo and cat Littl'n. 

  • Shannon Tippit - Communications Director

    Shannon is a Casper native and graduate of University of Wyoming with degrees in Communications and Women's Studies. She has been around animals her whole life as her mom owned a boarding facility while she was growing up. Shannon also took a course on dog training, which has given her skills for working with animals who are shy or timid. She has a diverse customer service background, working at several stores in Eastridge Mall, the police department, library, Pottery By You, and Best Friends Animal Health Center. Shannon enjoys reading, going to the movies and arts and crafts. She has a niece and nephew as well as two dogs, Lucky and Gypsy, who keep her busy and entertained. We welcome Shannon as she will be handling a lot of our customer communication avenues including Facebook, our on-line pharmacy, Vets First Choice, monthly hospital newsletters/emails, and so much more. 


Office Hours


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm




5:00 pm-5:30 pm


Read What Our Clients Say

  • "The entire team at Westside Animal Hospital is fantastic!! They take such great care of both of our dogs - young & old - routine care and/or emergencies!! Thank you to the Drs. Johannessen for all you do for our family:) Our community is truly so fortunate to have you here!"
    -Melissa Y
  • "Very good facility. Both doc's are good about giving quality time and their assistant Ashley is wonderful."
    -Victor J