Our Team

Our caring and compassionate veterinary care team!

Meet the Veterinarians & Team of Emergency Veterinary Clinic of Tualatin in Oregon. We’re pleased to provide exceptional vet care for your pets!

Please call us at 503-691-7922 to speak to one of our caring veterinary staff members!

    Practice Owner

  • Default Image

    Dr. Jo-Anne Wisniewski

    Practice owner

    Dr. Wisniewski’s undergraduate degree is from the University of Washington where she…

    Associate Veterinarians

  • Default Image

    Dr. Andy Nuijens

    Associate Veterinarian

    Dr. Andy Nuijens joined the EVCOT staff in August of 2008. He came on board full-time in…
  • Default Image

    Dr. Daniel O'Loughlin

    Associate Veterinarian

    Dr. Daniel O’Loughlin has been with EVCOT since January of 2000. Dr. Dan graduated from…
  • Default Image

    Dr. Jonathan Wisniewski

    Associate Veterinarian

    Dr. Jonathan Wisniewski received his undergraduate degree (Bachelors of Arts) from…
  • Default Image

    Dr. Pamela Williams

    Associate Veterinarian

    Dr. Williams received her Bachelors of Science from Oregon State University in 1974 and…
  • Default Image

    Dr. Reza Sadreddin

    Associate Veterinarian

    Dr. Reza Sadreddin received his Associate degree in Veterinary Technology from Portland…

    Relief Veterinarians

  • Default Image

    Dr. Kerri Jackson

    Relief Veterinarian

    Dr. Kerri Jackson works full-time at her day practice in Sherwood, and she keeps her ER…
  • Default Image

    Dr. Kieth Sierbinski

    Relief Veterinarian

    Dr. Keith Sierbinski earned his Doctorate of Veterinary Medicine from the University of…
  • Default Image

    Dr. Nicole Chamberlain

    Relief Veterinarian

    Dr. Nicole Chamberlin has been with EVCOT since 2005, working at another day practice in…