Kaka'ako Pet Hospital
Kaka'ako Pet Hospital

Dr Pauline M. Koreyasu

Dr. Pauline M. Koreyasu, DVM, grew up on the windward side of Oahu. As a young girl, she loved animals and was awed by the farriers as they worked on the horses at Kualoa Ranch. She attended Kahuku School from kindergarten through twelfth grade, graduating as valedictorian of her class. She furthered her education at Chapman College and the University of Hawai'i, graduating with honors with a Bachelors of Science in Education. Dr. Koreyasu attended graduate school at Colorado State University to earn her Doctorate of Veterinary Medicine.

After graduation, she completed an internship at The Animal Medical Center in New York, New York. In Staten Island, New York, she began her first job at Richmond Valley Animal Hospital. Dr. Koreyasu returned home to Hawaii after a year and was employed at University Pet Clinic. After five years, she partnered with Dr. Gleason Hirata to open Kapalama Pet Hospital. And now, after 16 years of practice, Dr. Koreyasu brings her medical and surgical skills to Kaka'ako Pet Hospital, a veterinary hospital that became a reality after many years of planning. Along with these skills, Dr. Koreyasu offers a special interest in veterinary dentistry, acupuncture, and Chinese herbal medicine.

Dr. Koreyasu is a member of the Honolulu Veterinary Society and the Hawai'i Veterinary Medical Association. She is also licensed to practice in the state of Hawaii, California, Colorado, and New York.

Dr Pauline Koreyasu

Dr. Judy Yasunaga

Dr. Judy Yasunaga was born and raised on the island of Oahu. After graduating from Kaimuki High School, Dr. Yasunaga attended the University of Hawaii where she obtained a Bachelor of Science in Biology. During her undergraduate studies, she started volunteering at the Hawaiian Humane Society, which helped to foster her love for animals. She also worked as a veterinary technician for 3 years before trading in gorgeous Hawaii weather for frigid Minnesota winters where she attended the University of Minnesota College of Veterinary Medicine. After graduation, she remained in Minnesota and practiced for an additional year before returning home to Hawaii.

Dr. Yasunaga enjoys all aspects of veterinary medicine, but has a special interest in dermatology and preventive care. She loves educating and partnering with owners to provide the best care for her patients. In her free time she enjoys spending time with her husband, dining out, watching movies, snuggling on the couch with her cats, Zoey and newly adopted Zenji, and traveling. She looks forward to meeting you and your special furry family member!

Dr Judy Yasunaga

Cymbree DeCosta, RVT

Lead Technician

Cymbree DeCosta was born and raised in Kula, Maui. At a young age she had many pets, including: horses, ponies, fishes, and dogs, which is where her love for animals began. She attended high school at Kamehameha Schools Maui Campus, then furthered her education in the state of Washington at Saint Martin’s University (SMU). She graduated from Saint Martin's with a Bachelor of Science in Biology while also playing volleyball and track and field. 


After graduation from SMU, Cymbree decided to move to Oahu and attend Windward Community College to pursue her career aspiration to become a Veterinary Technician. In 2016 she graduated with her associates degree in Veterinary Technology at the top of her class; summa cum laude, and a member of the Phi Theta Kappa National Honor Society. She then passed the Veterinary Technician National Exam and is currently a licensed technician in the state of Washington. 


When not spending time at the clinic with patients, Cymbree likes to play volleyball, get out and relax at the beach, enjoy various outdoor activities like hiking and kayaking, and loves to make inner island trips to Maui to spend time with her family and her parents’ English Bulldog named Lily. 


Cymbree loves working with animals and help keeping them healthy. She treats each patient with love and care, just as if they were one of her own. Cymbree is a member of the Hawaii Veteriinary Technician Association and proud to be a part of the Kakaako Pet hospital team. With the new state bill passed for licensed veterinary technician, she is currently working on transferring her license to Hawaii.

Cymbree DeCosta

Siolo Tiitii

Siolo has been with Kaka’ako Pet Hospital and previously Kapalama Pet Hospital for 10 years. Her journey started at Kapalama Pet Hospital where she started as a Kennel Assistant working hard to eventually becoming a veterinarian technician. Previous to that she volunteered at the Hawaiian Humane Society for a year.

She hopes to continue her journey here at Kaka’ako Pet Hospital as a veterinarian technician of the next 10+ years and looks forward to working with you and your furry babies!! She is an incredible mom and even goes to client's homes to help them when they need her. She loves what she does and looks forward to all the challenges she faces every day. We love her and know you will too!!

Siolo Titii

Joyce Shimizu

Joyce was born and raised on the island of Kaua’i. Graduated in 2014 from The University of Hawai’i at Manoa with her Bachelor’s degree in Animal Science. She was employed at Kapa’a Animal Clinic on Kauai as a Veterinary Technician until recently moving to O’ahu to start a new chapter in her life life. She joined Kaka’ako Pet Hospital in February 2016.

In her spare time, she likes to catch up on her Korean dramas or take a drive around the island. She recently adopted an adorable Chihuahua Yorkie puppy named Haruko who also spends time at the hospital with her.

She loves working with animals and helping them feel better, and that is why she chose being a veterinary technician as a career.

Joyce Shimizu

Angela Tsamardinos

Administrative Assistant/Inventory Manager

Angela moved to Hawaii in 2014 and joined the Kaka'ako Pet Hospital family in April 2015. She has had the opportunity to live in many different states to include Texas, Louisiana, South Carolina, Alaska, Wisconsin, Florida, and Hawaii. Her previous career was in property management. Angela enjoys the camaraderie of working with people who love pets, as much as she does.

She has been married to a wonderful man for 15 years and have two amazing kids, Eli and Wyatt. She loves taking their two dogs Dakota Marie (a lab) and Colby Jack (a goldendoodle) to the beach or hiking on a regular basis. She also has one amazing and sweet cat named Katniss Evergreen (Foster Fail!) She looks forward to meeting you and you pet family.

Angela Tsamardinos

Kamy Gu

Customer Service Representative

Kamy was born and raised in Honolulu, Hawaii. She joined the Kaka’ako Pet Hospital family in April 2014. She is currently attending Kapiolani Community College pursuing a degree in Nursing.

She is a proud mom of a 17year old male Reeve’s Turtle named Xiao Di (little brother). He loves turtle pellets and his favorite treats are lettuce, kale and apples. But he strongly dislikes celery leaves.

Kamy enjoys working at Kakaako Pet Hospital because she loves helping people. It makes her happy knowing that our hospital can provide the care that furry, feathered and even shelled family members need. She feels a great sense of accomplishment when a client leaves knowing that their pets were well taken care of. It makes her happy when they can rely on and trust that she really cares about them and works hard to do her job right. The experience she is gaining by working at Kakaako Pet Hospital will be extremely beneficial for her future career taking care of not only furry patients but human ones too!

Kamy Gu

Mia Yamane

Customer Service Representative

Mia was born and raised in Kaneohe, Hawaii, and joined the Kaka’ako Pet Hospital family in April 2017. Growing up, she has always been surrounded by animals that included: fish, a chinchilla, a cat, and many dogs, so it wasn’t a surprise she chose a career field where she would be able to interact with them every day. What she enjoys the most about our furry (and not so furry) family members is their ability to love unconditionally. One of the things that make her happy is when an owner leaves with the knowledge that their pet is healthy and well taken care of, as well as creating a comfortable, stress free environment.

In her free time, Mia enjoys a good book, spending time with family and friends, and watching movies. One of her life’s goals is to travel to as many places across the world as possible. So far, she has been to the Big lsland, Kaua’i, California, and Nevada.

Crystal Romero

Customer Service Representative

Crystal was born and raised in Southern CA and has been working with animals for the past 16 years. She attended a Veterinary technician program and pursued her career working in various departments of the veterinary field. After moving to Oahu in March of 2017, she began working at an Animal Emergency Facility and with Dogwalking/Petsitting Services until she joined the Kaka’ako Pet Hospital Family in December 2017. She is the mother of two fur babies, Otter a Beagle Chihuahua mix and Dexter a Corgi Lab Mix. In her spare time, she loves to go surfing, hiking, watching movies and relaxing on the beach.

Katherine Harris

Veterinary Technician Assistant

Katherine was born and raised in southern California in a small town called San Clemente. She attended San Diego State University and achieved a Bachelor's degree in Athletic Training and is currently working on achieving her Master's degree in Kinesiology online. 

She recently moved to Hawaii for new opportunities and a new adventure. She decided to pursue veterinary medicine and joined Kaka’ako Pet Hospital in March 2018 because she has always had a love for animals and wants to help your furry family members feel better. While it has taken some time and other career paths at first to get here, she is excited about the chance to grow in this profession and see where it takes her.  

Katherine loves living on the island with her fiance and two wonderful kittens. In her free time, she enjoys hiking, surfing, reading, and trying new things, especially food.

Kaka'ako Pet Hospital
Kaka'ako Pet Hospital
Kaka'ako Pet Hospital Twitter Kaka'ako Pet Hospital Instagram Kaka'ako Pet Hospital Read Kaka'ako Pet Hospital Reviews on Yelp Follow Kaka'ako Pet Hospital on Facebook Kaka'ako Korner Pet Hospital Blog Terms Privacy Policy Contact Kaka'ako Pet Hospital