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Companion Pet Clinic Team

Meet the People that Make Things Happen!

Dr. Christopher W. Cluff | DVM

Dr. Cluff joined Our CPC family in August of 2015. Chris was born in Wilmington, Delaware (first state, second smallest). After spending his childhood roaming the woods, catching and caring for salamanders, turtles, snakes and other assorted critters, Chris went to Bates College in Lewiston, Maine, and then to graduate school at Emory University in Atlanta, Georgia, where he obtained a Ph.D. in Immunology in 1988. After graduation, Chris traveled a bit and then took a position as a post-doctoral fellow at Rocky Mountain Labs for almost two years, and during that time met his future bride on the only blind date he ever had.

Chris decided to fulfill his childhood dream of becoming a veterinarian so he could do something he really loved and live wherever he chose. In 1990, Chris married Gail and moved to Clarkston, WA, where Gail could work as a high school teacher across the river in Lewiston, ID and he could go to the Veterinary School at Washington State University in Pullman. Chris graduated with honors in 1995.

Chris began to look for a job as a Veterinarian in the Bitterroot valley when he was hired by Ribi ImmunoChem, Inc, a biotech company in Hamilton that was developing cancer vaccines and drugs for organ transplantation. Chris was the perfect fit for the position as they needed a veterinarian with surgical skills and an immunology background. Chris spent two decades as staff veterinarian and senior scientist for Ribi, which was first purchased by Corixa Corporation and then by GlaxoSmithKline (GSK), Inc.

In 2015, GSK decided to move all vaccine-related research to Rockville, Maryland, which is a long way from this great place and not somewhere Chris had any desire to relocate to. Fortunately, Hans came to the rescue and asked Chris if he wanted to become a partner and eventual owner at Companion Pet Clinic so that he (Hans) could spend a little more time skiing and fishing. Chris jumped at the offer and is now having the time of his life helping cats and dogs live happy healthy lives.

Dr. Hans H. Boer | DVM

Dr. Boer is a 1982 graduate of the University of California at Davis School of Veterinary Medicine. He completed an internship in Small Animal Medicine and Surgery at Purdue University in 1983 and has been in private practice ever since.

He moved to Montana with his wife, Janet and children, Elena and Christiaan, in 1996 and established Companion Pet Clinic in Hamilton. When not hard at work, Hans spends his time fly fishing, hiking and enjoying time with his family. He lives in Hamilton with his family and two dogs (Gus and Minnie) and three cats (Tony, Tux and Bob).

Dena Warych | AHT

Dena Warych attended the Animal Health program at Yuba College in Northern California right out of high school. She graduated with an AS degree in 1983 and then passed the California State Board Exam to become a licensed veterinary technician. She worked for another vet for a short time in Paradise, CA. until she started her family with her ex-husband, John. When her youngest child was less than a year old she started working for Hans. When Hans relocated to Montana the Warych family decided it was time for a change, too. The whole family is so glad they're all here!

Dena lives in Stevensville with her daughter, Heather, and her dogs which currently consist of a Bullmastiff, Peach, a Labrador Retriever named Sam, and a Boston Terrier cross, Kermit. Heather's two Golden Retrievers and Newfoundland/Golden Retriever mix also live with them.

Natasha Osborn | CVT

Natasha grew up on a small farm in Vermont and graduated with a BA from the University of Vermont in 1991. She began her technician career doing internships in high school and worked as a technician through college. In 1996 she began to travel out west and spent two years working for the Forest Service in South Dakota as a Wildlife Biology Technician. In 1998 she moved to Montana and settled in the Bitterroot Valley. In 2000 she passed the National Technician Exam and became a Certified Veterinary Technician. She joined Hans and Dena at Companion Pet Clinic in 2002.

Natasha currently lives in Stevensville with her animal menagerie: Dogs- Frog, Kestrel, Elf, Bounder and Spring. Cats- Willow, Aspen, Penguin and Mango. Horses: Duster and Sam. When not hard at work at CPC, Natasha runs her dog training business, Pathfinder Agility, LLC, teaching classes and private lessons. In her free time, she enjoys traveling and competing in Agility Trials with Frog, Kestrel, Elf, Bounder and Spring, and heading into the mountains Biking, Hiking, Horseback Riding, and Birding.

Lora Floyd | CVT

Lora is a Native Montanan, born in Missoula. She started her work with animals right after high school. She then moved to Portland, Oregon for 10 years, continued her work with animals at a surgical specialty clinic in Portland, which presented her with the opportunity to further her skills. She was able to become certified I Small Animal Radiology and take the National Technician Exam.

The pull of coming back to Montana was always there for Lora, so packing up the family, she moved back to the Bitterroot to be close to her parents and grandparents. She shares her life with her two sons-Connor and Koh, their extended family of dogs Jack, Arthur, Frankie, cat Popcorn and the girls. (her chickens )

Celisa (Lisa) Wick

Lisa is our least visible employee with one of the greatest impacts! She is the person responsible for our clinic's shiny, clean appearance. Lisa is usually here long after the hustle and bustle of the day is done, cleaning and preparing the clinic for another day.

Simone | 1999 - 2015

Simone came to Companion Pet Clinic as a youngster in the fall of 1999. She had arrived at the Bitter Root Humane Association with a badly injured tail so they brought her to us to see what could be done.

We amputated the end of her tail and during her recovery here it was clear that she was a great cat and a perfect fit for the clinic. She was our official greeter for 16 years and became a staff and client favorite! She succumbed to kidney failure in the Spring of 2015. We all still miss her distinctive voice, her tendency to always be underfoot and her fuzzy black feline form draped all over our front counter! Her paws were big and have yet to be filled by another clinic cat. Happy Trails, Simone, we miss you!


Snickers joined our practice in October 2015. She is currently adjusting to life in a busy hospital and spends much of her time supervising the activity in our surgery and treatment room.

Snickers has big cat feet to fill following Simone's lead but she is doing a great job making her own niche here at CPC. Welcome Snickers!

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