​​​​​963 W. Route 66 Suite 230 Flagstaff Arizona 86001

ph:(928) 779.0148    fax: (928) 779.0149


For after-hour care please contact: 

Veterinary Emergency & Specialty Center of Northern Arizona

1359 E. Butler Ave

Flagstaff, AZ 86001


We’d like to take a moment to share some very exciting news with everyone!

After 12 years of managing Westside Veterinary Clinic, it is finally time for Dr. Barnes to have a break. As of last week, ownership of the clinic has officially transferred to Dr. Siess. Have no fear, as Dr. Barnes will still be seeing patients, but Dr. Siess has decided to take the duties of being the owner off of her hands.

Please feel free to drop by the office and join us in congratulating both Dr. Siess and Dr. Barnes!

Please be advised:

Our office will be CLOSED on Monday May 28th, 2018 to allow our staff to celebrate Memorial Day with their families.
We will be in the office again at 8 am on Tuesday May 29th, 2018 for regular scheduled appointments.

In case of an emergency:
The Veterinary Emergency and Specialty Center of Northern Arizona will be open
5 pm on 05/25/18 until 8:30 am on 05/29/18.
You can reach them at 928-779-5522.

We apologize for any inconvenience this may cause you and thank you for understanding.
The Doctors & Staff at Westside Veterinary Clinic

Are you and/or your pet new to our clinic? Thank you for choosing us to care for your pet(s). We are excited to meet and get to know you! To start your appointment, we'll need some information about you and your pet. To save time and get seen by your veterinarian sooner, we have given you the option to fill out that paperwork ahead of time and bring it in with you

New Patients

Our Approach

​Monday - Friday   8:00 am - 6:00 pm

Saturday & Sunday   Closed

>>> Please note that in an endeavor to provide all of our patients and clients with the best care possible, visits are by appointment only except in the case of an emergency. If you are unsure if your pet's condition is urgent, please call and speak with any of our knowledgeable staff members to determine the best course of action. Thank you!

The veterinarians at Westside would like to welcome the Veterinary Emergency and Specialty Center of Northern Arizona,   open week nights after 5:00 pm, weekends Friday 5 pm through Monday 8:30 am, and major holidays.

As an AHAA accredited veterinary practice we are held to the highest standards in quality of care for your pet. Find out why accreditation matters.

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We have been recognized as a Cat Friendly Practice by the American Association of Feline Practitioners. Find out what this means for you and your cat.

The team at Westside Veterinary Clinic is committed to providing you and your pet(s) with the highest standard in veterinary medical care, along with compassion and understanding. We offer an integrative approach where applicable in order to give our clients and patients the most comprehensive treatment options.


We do not believe visits to the vet clinic should be a source of stress for you or your pet. Our veterinarians start with relaxing your pet and making them feel comfortable in the clinic. Toys, treats, and playtime are used to make patients feel at ease and happy. We feel this is an integral part in offering the best veterinary care in Flagstaff. In addition to offering wellness care for your dog or cat such as exams, vaccinations, and spaying/neutering, we provide high end diagnostics ( such as radiographs, labratory services, ultrasound, etc.), a variety of surgical procedures, acupuncture, laser therapy and more.