I said I would give Dr. Koopman a 5 star rating but he deserves a 10. My cat Angel (Sissy) loves him and does not try to escape his presence. I think she trusts him because he just gives off a gentle trustworthy vibe. The absolute best doctor she has ever had. Thanks Dr. Koopman for being so accessible and coming to the home. Disabled veteran is extremely grateful for your service.