eastvalleyemergencypetclinic.com - Call us today at 909-861-5737. At East Valley Emergency Pet Clinic, we are committed to providing the best quality patient care available. We specialize in after hour emergencies, IV fluid support, and endoscopy. In addition our facility is equipped with in-house laboratory, x-rays, and full surgery suite. Our office is located in 938 N Diamond Bar Blvd. Diamond Bar, CA 91765 and serves the surrounding communities of Pomona and West Covina.