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Oregon/California Chronology

Veterinary Medical Board Documents

News Articles

Nov 2025

Protestors aim to shut down Companion Pet Clinic in Gresham (Gresham Outlook)

Nov 2025

‘Died in the back seat’: Portland area veterinarian faces new scrutiny in pet deaths (KOIN News)

Sept 2023

Portland-area veterinarian Daniel Koller pays $35K to resolve latest animal-abuse case, continues to practice (OregonLive)

Feb 2020

Pets Are Just ‘Property,’ So Owners Can’t Do Much When Vets Harm Them (NY Times)

Dec 2019

Daniel Koller, notorious vet charged with animal abuse, regained license because veterinary board was given ‘one option’ (OregonLive)

Nov 2019

Daniel Koller, Beaverton veterinarian with long history of battling animal-cruelty allegations, arrested on new abuse charges (OregonLive)

Nov 2019

Companion Pet Clinic vet charged with aggravated animal abuse (KOIN News)

Nov 2019

Pet owners protest Beaverton veterinarian accused of animal abuse (KGW News)

Nov 2019

Veterinarian with previous conviction arrested on animal abuse charges in Beaverton (KATU News)

Nov 2019

Beaverton vet arraigned for dog torture (KOIN News)

Nov 2019

Veterinarian accused of animal abuse; confrontation with customer caught on camera (FOX43 News)

Oct 2019

Oregon veterinarian with checkered past is treating pets again in Beaverton – and getting more complaints (OregonLive)

Apr 2010

Dr. Daniel Koller, Portland founder of Companion Pet Clinics, has vet license revoked (OregonLive)

Oct 2008

State board suspends license of Portland veterinarian (OregonLive)

Nov 2006

Daniel Koller, D.V.M., Denial of Application; Introduction and Procedural History (Federal Register)

Jan 2004

Veterinarian faces new claims....GGRRRR

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