Meet Our Team

Dr. Jeffrey Marks

DR MARKS AND REX.jpg Dr. Jeffrey Marks is the managing director of the Rancho Park Veterinary Clinic.  His special interests include orthopedic and soft tissue surgery, diseases of the ears and dermatology.  

Dr. Marks is a second generation veterinarian and has worked in a veterinary hospital since 1967 when he was just a 12 year old helping his father Dr. Alan Marks.  He was born in Detroit, Mi. but considers Los Angeles his home.  He feels that clients who bring their pet to Rancho Park Veterinary Clinic are not just clients but rather they are like part of the family. 

Dr. Marks graduated from Michigan State University (Go Spartans!) in 1976 with a Bachelor of Science in Physiology and went on to receive his veterinary degree at Michigan State University in 1980.  

Dr. Marks and his family live in a house full of German Shepards and cats.  His hobbies include travel and wine tasting in Northern California. 


Dr. Lara Nicolayevsky ("Dr. Nic")

Dr. Lara Nicolayevsky ("Dr. Nic") is a graduate of UC Davis Veterinary School and has been an associate at Rancho Park Veterinary Clinic since 2003.  

Prior to becoming a Veterinarian, Dr. Nic was a teacher and believes strongly in educating and empowering her clients.  She enjoys speaking about Veterinary Medicine at elementary schools and various events. 

Dr. Nic is happily married, has young twins and a labradoodle named Hibbert.  She enjoys hiking, traveling and baking.

Dr. Joanna Choi

DR MARKS AND REX.jpgDr. Joanna Choi hails all the way from Manhasset, NY, a small town on Long Island, close to New York City.  

She attended Wellesley College, where she received a Bachelor of Arts in Neuroscience.  Before veterinary school, she performed Parkinson's disease research, worked with a local small animal veterinarian, and worked at the New York Aquarium.  Dr. Choi received her veterinary degree from Cornell University College of Veterinary Medicine in 2017. 

Her interests include surgery, dentistry, diagnostic imaging, preventative medicine, and exotics.  

Dr. Choi enjoys spending time with her energetic Jack Russell Terrier named Maya, traveling, baking, outdoor activities, and discovering the beautiful state of California.

Dr. Sarina Pacifici

Dr. Sarina Pacifici graduated from Cornell University with a Bachelor of Science in Animal Science and received her Doctorate of Veterinary Medicine from the UC Davis School of Veterinary Medicine. She has had a passion for animals since she can remember, and made it her goal to become a veterinarian at an early age. She was drawn to general practice because of the diversity of cases with which she is presented, as well as the ability to build meaningful and lasting relationships with clients and patients. Dr. Pacifici was raised in Southern California, growing up alongside her family’s Boxers. In her time off, she can be found relaxing with Penny (her senior Boxer), cooking and enjoying yummy vegan food, and cycling.

Dr. Ruby Soto


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Office Hours

Our Regular Schedule


7:30 am

5:00 pm


7:30 am

5:00 pm


7:30 am

5:00 pm


7:30 am

5:00 pm


7:30 am

5:00 pm


9:00 am

4:00 pm