Our Doctors

Dr. Tia Greenberg graduated from Ross University, School of Veterinary Medicine in 1992. Following veterinary school, she completed post-graduate studies in Avian and Exotic Pet Medicine and Surgery at the prestigious Animal Medical Center in New York City. After 9 years of practicing medicine with one of the most renowned exotic animal veterinarians in the country, Dr. Greenberg opened the Westminster Veterinary Group. Dr. Greenberg is a member of the American Veterinary Medical Association (AVMA), the California Veterinary Medical Association (CVMA), American Association of Veterinary Dermatologists (AAVD), and the Veterinary Emergency and Critical Care Society (VECCS). She serves as Adjunct Professor for the Western University of Health Sciences College of Veterinary Medicine, mentoring Veterinary students in canine, feline and exotic animal medicine. She is an active member of the Association for Avian Veterinarians, and the Association for Reptile Veterinarians. She has published numerous articles in veterinary journals and textbooks on exotic animal medicine. Dr. Greenberg enjoys nursing sick and injured wildlife back to health, and oversees our Orange County Wildlife foundation.

Dr. Naomi Tateishi Barnes is a 2009 graduate of Western University of Health Sciences. She is a Southern California native and began her training in veterinary medicine through Mount San Antonio College's Registered Veterinary Technology program. She became a licensed technician and worked corporate and private practices including an emergency and critical care hospital. After acceptance to veterinary school, her curiosity of exotic species grew and led her to Westminster Veterinary Group as a 4th year student. She was welcomed back as an associate veterinarian to further nurture this desire and enhance her foundation of small animal medicine. Dr. Barnes enjoys gardening, cooking, playing video games, and reading murder mystery novels. She currently resides in Ontario with her husband, 3 cats (Daphne, William Lee, and Marnier), and tropical fish.

A Southern California native, Dr. Yamamoto grew up in Orange County and completed her undergraduate education at California State Polytechnic University in Pomona. She then attended the University of California, Davis School of Veterinary Medicine and graduated in 2010. She has always had an interest in working with exotics and joined the Westminster Veterinary group to further pursue this interest in Avian and Exotic medicine.

Dr. Yamamoto spends her spare time working in a local ceramics studio making pottery, gardening, running, and riding horses. She currently resides in Whittier with her fiance, 3 dogs, 2 cats, and fancy goldfish.

Dr. Marina Yamate has spent her whole life right here in SoCal. From a young age, she had an interest in veterinary medicine and began gaining experience as a veterinary technician by working in private small animal general practices as well as exploring the specialties of ultrasonography, surgery and ophthalmology. After completing her Bachelor's Degree in Animal Science with an emphasis in Pre-Veterinary Medicine at California State Polytechnic University, Pomona, she then attended Western University of Health Sciences in Pomona, California and obtained her Doctorate of Veterinary Medicine in 2011. Dr. Yamate has a strong interest in ophthalmology, surgery and exotic animal medicine.

Dr. Yamate enjoys being outdoors and taking every opportunity to be mountain biking, snowboarding, quad motorcycle riding or being out on her Sea Doo. She currently resides in Brea with her husband and 2 Bengal cats, "Kalani and Kanoa".

A Southern California native, Dr. Fischer grew up in Villa Park and graduated from California State Polytechnic University in Pomona with Bachelor of Science degree in Animal Science. He received his Doctorate of Veterinary Medicine from Ross University completing his clinical rotation at Oklahoma State University. After more than 10 years in private practice as an owner of a large practice in Florida, Dr. Fischer's love for surgery led him to return to California where he completed a surgical residency.

Dr. Fischer is a Diplomate of the American College of Veterinary Surgeons. Dr. Fischer's previous experience over the past 21 years as a Veterinarian includes working at local specialty referral centers in Southern California as well as providing mobile Veterinary services to practices throughout southern California.

Dr. Fischer's experience includes a wide variety of specialized and technically complex orthopedic surgical procedures including TPO, TPLO, TTA, a variety of spinal surgeries and complex fracture repair as well as complex soft tissue surgical procedures such as lung lobectomy, liver lobectomy, Ameroid ring placement for liver shunts, total ear canal resection with bulla osteotomy and thoracic duct ligation.

Dr. Fischer has a special interest in minimally invasive surgery including many Laparoscopic and Thoracoscopic procedures and has lectured at local veterinary meetings. You can visit his website at: www.socalvetsurgeon.com.

Dr. Fischer, his family and their Bull Dog 'Lola' and cat 'Tommy'' reside in Huntington Beach, Ca.

Dr. Reed graduated from Kansas State University in 1991. In 1994 she completed her Veterinary Radiology Residency and became a boarded diplomate of the American College of Veterinary Radiology in 1995 at the University of Missouri, Columbia. She has been Westminster Veterinary Group's consulting Veterinary Radiologist since 2001. Dr. Reed enjoys running, water skiing, wakeboarding, basketball, soccer, and biking in her spare time.