Dr. Randall Aten


Dr. Randall Aten is the owner of Corona del Mar Animal Hospital since 1992 and has been practicing in the Newport Beach area since 1987. Dr. Aten was born and raised in a small town in central Illinois. He originally thought of staying down on the farm, but as his education progressed he decided the challenges of small animal medicine were more rewarding. Dr. Aten graduated from Wabash College in Indiana with a B.A. in Biology and received his D.V.M. degree in 1982 from the University of Illinois.
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Dr. Carissa Cruz


Doctor Carissa Cruz-gsell is originally from Los Angeles, but attended the University of California, Irvine for her undergraduate degree in Biological Sciences.
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Dr. Tara Mendez


Dr. Tara Mendez joined the Corona Del Mar Animal Hospital practice in January 2022 and is excited to work in a practice that provides individualized and progressive care for its patients and clients. 
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Our technicians are crucial in assisting the doctors to make sure your pet is given excellent medical care. They are involved with taking x-rays, collecting blood samples, placing IV catheters and ensuring that your pet’s medical condition receives professional care and oversight.


These are the first faces that you will meet coming to Corona del Mar Animal Hospital. These receptionists have many years of experience and will make sure your visit is friendly, caring and efficient for you and your pet. They have the knowledge and training to assist you with your pet’s needs.

Contact Us

Corona Del Mar Animal Hospital


2948 E Coast Hwy Corona del Mar, CA 92625

Clinic Hours

Monday, Wednesday, Friday: 7am-5:30 pm
Tuesday and Thursday: 7am-7pm
Saturday: 7am-1pm, Sunday: Closed