Meet the Team

At Your Service

Pasadena Veterinary Specialists is a group of individuals who have chosen to specifically care for animals with special medical and surgical needs. From our front office to our board certified specialists, we invite you to meet the team offering gentle, expert, and thorough care.

Jocelyn Mott, DVM

Diplomate, American College of Internal Medicine
(Small Animal Internal Medicine)

Medical Director

Dr. Mott graduated from the Western College of Veterinary Medicine in Saskatoon, Saskatchewan, Canada in 1992. After graduation, she completed an internship in small animal medicine and surgery at Oklahoma State University and then a small animal internal medicine residency at the University of Wisconsin-Madison. Dr. Mott is board certified by the ACVIM in small animal internal medicine.

With a broad range of experience, Dr. Mott has worked in small animal referral practices in Massachussetts, Texas and Florida, and has performed clinical research in veterinary nutrition. She has authored several publications and book chapters in veterinary medicine and is an international speaker in her field of expertise.

Although Dr. Mott enjoys all aspects of internal medicine, she especially enjoys gastroenterology, nutrition and endocrinology. She currently holds the position of Past-President of the ACVIM Foundation to help further animal healthcare and specialty medicine. When Dr. Mott is away from PVS, she enjoys spending time with her husband Pete, a veterinary clinical pathologist, and her two four-legged children, Zoey and Wally, horseback riding, and synchronized swimming.


Fiona M. Little, VMD

Diplomate, American College of Veterinary Surgeons

Dr. Little received her veterinary degree from the University of
Pennsylvania School of Veterinary Medicine in 1996.  

After graduating from veterinary school, Dr. Little completed a one-year rotating internship in surgery, medicine, and emergency treatment at Rowley Memorial Animal Hospital in
Springfield, Massachusetts. Following the internship, Dr. Little practiced in a general practice in northern Virginia for one year. In 1998, Dr. Little began a three-year residency at Iowa State University. After completing the residency in 2001, Dr. Little passed the board certification examination to become a Diplomate of the American College of Veterinary Surgeons.

Dr. Little’s special interests include soft tissue surgery, oncologic (cancer) and reconstructive surgery, as well as neurosurgery. She also performs orthopedic surgery such as TPLO (tibial plateau leveling osteotomy), fracture fixation, TPO (triple pelvic osteotomy), and numerous other procedures.


Vivian Yau, DVM

Diplomate ACVIM (SAIM)

Dr. Yau completed a one-year rotating internship in small animal internal medicine, oncology, and surgery at Animal Specialty Group in Los Angeles. After the internship, she completed a three-year residency in small animal internal medicine at both Pasadena Veterinary Specialists and the associated Los Angeles Veterinary Specialists. Dr Yau is board certified in small animal internal medicine.

Professional interests for Dr. Yau include endocrinology, gastroenterology, cardiology and oncology. She also enjoys giving seminars to fellow veterinarians on topics such as canine Cushing's disease, diabetes and liver diseases.

Born and raised in Hong Kong through her early teens, Dr. Yau is entirely fluent in both Mandarin (Putonghua) and Cantonese. She has three mischievous cats named Puma, Nike and Charmmy and a dog named Gopher. In her free time, she enjoys spending time with her husband, exercising, and donating her time to charity.



Octavio Oregel

Veterinary Technician Assistant

Octavio’s love for animals has been fostered over the years, having cared for a menagerie of animals throughout his childhood, including 3 hamsters, a lizard, a tarantula, a snake, a black kitten by the name of B-G, chickens, fish, and a hurt pigeon. Because he enjoyed working with animals, Octavio started working in the veterinary field in 2001 at a veterinary practice in Monrovia. Octavio has been part of the PVS team since 2006. He is a vital member of the team, providing care for our patients and clients, performing laboratory tests, filling prescriptions, and performing radiographs. Born and raised in Los Angeles, Octavio also enjoys taking pictures of vintage cars.


Sonia Aguirre

Registered Veterinary Technician


Sonia has been in the veterinary field for 7 years.  She received her A.S. Degree in Veterinary Technology from Mount San Antonio College in 2006 and has been an RVT since 2007.  Currently she is pursuing her B.S. in Biology at Mount San Antonio College.  She has been a valuable member of the PVS team since 2011.  When not studying or working, Sonia's interests include horror movies, music, quoting The Simpsons, and styling hair.  In fact, Sonia received her Cosmetology license in 2002!  But she soon realized that her true calling was to help animals.  Sonia especially loves cats!  She has 2 adorable Tabbies - Sally who is 6 years old and Boris (a polydactyl) who is 2 years old. 

Maritza Molina

Senior Surgical Technician

Maritza began working in the veterinary field at a very young age. Her neighbor, Dr Nigel White (now a retired Veterinarian) introduced her to her future career at the age of 15. As a child, she always had a passion and love for animals and her dream was to work with animals and give them her love, healing hands and devotion. To Maritza, Dr. White was an angel, fallen from the sky. He trained her and exposed her to the veterinary field and helped her grow her wings to pursue bigger and better opportunities. Maritza is the Senior Technician at Pasadena Veterinary Specialsists Surgical Department and has been working there since 2008. She appreciates critical surgical cases and like to run anethesia and assist the doctor in surgery, especially in soft tissue cases. Maritza has her AS Degree in Biology and is currently working on her BA degree to be an RN with an emphasis on Pediatric Oncology. She currently lives with her two dogs, Missie a 14 year old female beagle/corgi mix and Honey-Moon, her 6 year old female cocker spaniel. She also has two cats, Luna an 8 year old and Charlie who is 2 months old. In her free time, Maritza is a painter and she enjoys reading, soccer,hiking, biking, swimming, weight lifting, dancing and she loves to travel. Maritza continues to seek better techniques to master her nursing aptitude and is always willing to learn new skills. Her viewpoint when working with patients is: The more you know the better it is for yourself and for your patients to give them the best and most thorough medical care. 

Brittany Blanco

Assistant Veterinary Technician

Brittany has been a Veterinary Technican specializing in Emergency Medicine and Surgery for the past 5 years. She graduated from Cal Poly Pomona in June of 2011 with her Bachelors of Science in Animal Science. Brittany is eligible to take the State and National Board Exam to acquire her RVT license. She plans on taking it within the year. Brittany's interested include radiology and critical/emergency surgery. She has two pit bulls, Lucy and Damien and a French Bulldog, Frankie.  

Consulting Specialists

Peter Fernandes, DVM

Diplomate, American College of Veterinary Pathologists

Dr. Pete Fernandes completed his DVM at the University of Wisconsin-Madison. This was followed by an internship in small animal medicine and surgery at South Shore Animal Hospitals in Boston. Dr. Fernandes’ residency was in clinical pathology at Texas A&M University and the University of Florida. He is a Diplomate of the American College of Veterinary Pathologists. His interests include cytology, infectious diseases, and diagnostic oncology.


David Hager, DVM, MD

Diplomate American College of Veterinary Radiology

Dr. Hager is a board-certified veterinary radiologist, and has a unique background in medical and radiologic training in that he is both a veterinarian and a physician. He received his veterinary degree in 1980 from Purdue University, completed a small animal medicine and surgery internship at Louisiana State University and then underwent a three-year veterinary radiology residency at the University of California, Davis, that culminated in board certification as a veterinary radiologist in 1984. He joined the faculty at the University of Florida as an Assistant Professor for four years before establishing a radiology practice in San Diego in 1988.

Due to an intense interest in comparative medicine and advanced imaging procedures, Dr. Hager attended medical school at the University of California, Davis, and graduated in 1994, while maintaining a radiology practice in San Diego. As part of his human medical training, he completed a transitional internship at Mercy Hospital in San Diego and two years of radiology residency at the University of California, San Diego.

In San Diego, he established, and later sold, a stand-alone veterinary diagnostic imaging center. The center provided nuclear medicine, ultrasound, CT and MR imaging along with hyperthyroid cat treatment, commonly referred to as I-131 or radioactive iodine. Recently, Dr Hager's practice has evolved into emphasizing teleradiology consultations with a special interest in MR and CT imaging. Dr. Hager has over forty articles on veterinary radiology topics published in various veterinary journals and has spoken both nationally and internationally on veterinary radiology subjects.

Dr. Hager continues his interest in comparative human and veterinary radiology while striving to obtain the highest quality of diagnostic imaging for his veterinary patients and practice. Having been a cat lover his entire career, Dr. Hager continues to own and manage the Animal Imaging & Treatment Center ( in Las Vegas, NV, a hyperthyroid cat treatment center.

We are fortunate to be able to call on the services of Dr. Hager as a consulting radiologist and know that his expertise is paramount in the proper evaluation of our patient’s imaging studies.