Ed Shin, DVM

Chief Executive Officer
Chief of Medical Staff

Dr. Shin is one of the founders of Southern California Veterinary Group, along with his veterinary school classmate, Dr. Sameer Trivedi. Hailing from Sacramento but based in Southern California for the last 20 years, Dr. Shin earned his Doctorate in Veterinary Medicine from the top nationally ranked School of Veterinary Medicine at the University of California, Davis. Post-graduation, he completed his internship in internal medicine, surgery, and emergency care prior to acquiring Norco Animal Hospital in 2007 as the first SCVG location. While continuing his practice at Norco Animal Hospital, SCVG acquired Lake Elsinore Animal Hospital in 2012 and Valley Veterinary Hospital of Murrieta in 2014, allowing him to practice at all three SCVG hospitals currently. Adept in treating a variety of dog and cat breeds, Dr. Shin delivers distinguished skill in emergency care, endocrinology and preventive medicine to the SCVG family of practices. In his spare time, he enjoys mountain biking, reading, and spending time with his dog.

Sameer Trivedi, DVM, DACVIM

Chief Learning Officer

Dr. Trivedi is a founding partner of Southern California Veterinary Group, along with Dr. Ed Shin, his classmate at UC Davis School of Veterinary Medicine. Born in Englewood, New Jersey, Dr. Trivedi has spent most of his life in Southern California. He finished his undergraduate studies at University of California, San Diego, majoring in animal physiology and neurosciences, then went on to graduate from the School of Veterinary Medicine at the University of California, Davis. Next, he completed his internship at Veterinary Medical and Surgical Group in Ventura. After finishing a small animal internal medicine residency at UC Davis, he successfully completed the American College of Veterinary Internal Medicine exam and requirements to become a Diplomate (Board Certified Internist) of the ACVIM.

Dr. Trivedi has been involved as a consultant with SCVG since its inception, and he is currently practicing at VCA Animal Specialty and Emergency Center in West Los Angeles. He provides continuing education and focused internal medicine laboratories/lectures to the doctors of SCVG and is always available for phone or email consultations with their doctors.

Relishing his own work-life balance, Dr. Trivedi loves to play tennis, is an avid reader, and always enjoys spending time with his wonderful wife and lovely daughter. They live with their two dogs, Mango and Lemon.

Sachin Trivedi

Chief Operating Officer
Chief Financial Officer

Sachin is an Inland Empire local, raised and currently living in the IE with his wife and young daughter. He has been with SCVG since its inception in 2007, serving as the group’s COO and CFO. He has spearheaded the growth and development of SCVG, including acquisitions, facility improvements, procedures and operations. Earning his Master of Business Administration degree in 2007, Sachin’s education and years of experience have given him a strong background in leadership, team building, operations, strategy, marketing, IT, and finance, which are the keystones of his role at SCVG. A proponent of continuing education, a high priority for SCVG’s doctors, Sachin teaches real estate and finance at Cal Poly Pomona as an adjunct professor. His personal time is focused on his family, and he also enjoys playing tennis, relaxing in his backyard, and wine tasting.

Adam Berquist

Chief Information Officer

California native Adam grew up in Palo Alto and now calls Orange County home. He studied at University of California, Riverside, and has worked in the information technology field for nearly 20 years. He has been on the SCVG team for almost five years, splitting his time between SCVG and Nellson Nutraceutical as a full-time senior systems engineer, where he has worked for more than 10 years. In his free time, he enjoys hiking, camping and playing basketball.

Courtney Zimmerle

Human Resources Director

A native of the Inland Empire, Courtney was born and raised in Riverside, California, and has more than 20 years of experience working in the veterinary field. She has truly climbed the career ladder at SCVG, first joining the team in 2008 at Norco Animal Hospital. Over the years her duties included payroll, scheduling, human resources, and she was general manager of Lake Elsinore Animal Hospital until 2016 when she accepted the position of human resources director overseeing all SCVG hospitals. Her current position finds her covering payroll, reporting, benefits administration, call center management, and hospital staffing. She has certifications in Payroll Law, FMLA Compliance, and Essentials of HR Compliance, and she is a member of the Society of Human Resources Management. In her personal time, she spends every minute she can with her husband and toddler son doing fun things like camping and off-roading. The family also includes two dogs, a crazy hairless cat, and a fish.

Rico Castro


Rico hails from Cleveland, Ohio, which still holds his heart for the land and its teams, and is where he earned his Bachelor of Arts degree in English from Case Western Reserve University. He joined SCVG in 2013 as a technician and office manager, and then was named to the comptroller/accounts payable position in 2015. He strongly believes there can never be too many books to read, and counts modern comedic satirist Christopher Moore as a personal favorite. He also takes great pride in being a fan of George R.R. Martin’s “A Game of Thrones” before the television show was even a concept, and places “The Hobbit” at the very top of his all-time favorite reads. He tends to watch too many movies and way too much TV, highly recommending “The Man in the High Castle,” and he can quote “Arrested Development” and “Archer” all day long. A self-proclaimed huge trivia nerd, as of June 2018 he is thrilled to join the elite group of people who can call themselves “Jeopardy Champion”! Rico is thankful that his three cats, Elayne, Aviendha and Eduardo, allow him to live in their home… as long as he keeps feeding them and they don’t mind having their photos regularly posted on social media.