Rialto Animal Hospital

1480 North Ayala Drive
Rialto, CA 92376



Meet Our Doctors!

Dr. Jeffrey A. Creswell

Dr. Creswell was born and raised on a farm in Iowa (a good ol' Iowa boy!).  He is a graduate of Iowa State University College of Veterinary Medicine 1981.  In June of 1981, he moved to California to begin practicing small animal medicine.  He has been a full-time staff veterinarian at Rialto Animal Hospital since February 1982.  We can't say enough good things about Dr. Creswell... caring, compassionate, and committed to giving his patients the best possible care, he'll leave many of you asking if he see HUMAN patients (many of our clients have already asked!!)

Dr. Creswell's hobbies include spending time with his family, golfing, and reading. He especially loves being the best Grandpa in the world to his two grandsons and two granddaughters!

Dr. Creswell's patients include dogs, cats, rabbits, and rats. (Unfortunately, he is highly allergic to hamsters and guinea pigs...Sorry!



Dr. Shannon T. Juarez

Dr. Juarez, a Rialto native, knew at the young age of ten that she wanted to become a veterinarian.  Her aspirations were no surprise to her family and friends because of her compassion and dedication to all living creatures great and small.  She completed her undergraduate and masters degree in animal science at the University of California, Davis.  Prior to attending veterinary school, she worked in the dairy industry as a marketing representative.  Dr. Juarez completed her veterinary degree at Western University of Health Science, College of Veterinary Medicine in May 2007 and has joined our team as a full-time staff Veterinarian.  However, Dr. Juarez is no stranger to our practice.  During her four years at veterinary school, she worked during her summer and holiday vacations at our hospital.   In her spare time, she enjoys camping, swimming, cycling, playing tennis, and spending time with her husband and four-legged kids, dogs Bridget and Andre and her cat Jordan.   Dr. Juarez also has a huge heart and another passion... she has traveled to Ghana, Africa with a team of professionals and has worked to improve the lives of the underprivileged people of Ghana. She is a "perfect fit" here, with the same admirable qualities that we love so much in Dr. Creswell.

Dr. Juarez's patients include dogs, cats, rats, hamsters, gerbils, guinea pigs, rabbits and chinchillas.



Dr. Heidi Schroer-Newell

As long as Dr. Schroer can remember, she has always loved animals and knew that becoming a veterinarian would be her passion and livelihood. She received her undergraduate degree in 2006 from Cal Poly, Pomona, and her dream came true in 2011, when she graduated from the University of Minnesota with her Doctorate in Veterinary Medicine. She is an enthusiastic surgeon and thrives on challenging surgical procedures and learning advanced techniques. Her other professional interests are in internal medicine.

Dr. Schroer was born in Berlin, New Hampshire and grew up in Southern California. Prior to starting veterinary school, Dr. Schroer worked with our team at Rialto Animal Hospital for a year. We are very proud to say that she also spent a year on the tiny island of Pohnpei, one of the Pacific Islands of Micronesia, where she taught English and Biology to the native children. We feel honored that Dr. Schroer is working by our side as our doctor, and are confident that you will love her as much as we do (and we love her a lot!!)

Dr. Schroer loves the mountains and the beach, especially palm trees and sand. Her interests include hiking, beach trips, playing with her three dogs and three cats, family time, and spending quiet moments with her husband, Mike and their baby boy.

Dr. Schroer's patients include dogs and cats.



Dr. Andrea Wolf

We were thrilled to welcome our 4th Veterinarian back in late 2013. After an extensive search for a Doctor that would be the perfect fit for our hospital, we finally found her!  

Growing up, Dr. Wolf always knew she wanted to be a Veterinarian. She fulfilled that dream in 2011 when she graduated from the University of Minnesota, College of Veterinary Medicine. Dr. Wolf focuses on delivering high standards of medicine and compassionate care for her patients. Her professional interests include surgery, internal medicine and dentistry and she is a strong advocate for gentle feline handling.

Dr. Wolf is enthusiastic, gentle, patient and passionate in her care for pets and their people. She enjoys outdoor activities such as hiking, cycling, and swimming. You can find her in our hallways singing and always has a big smile on her face. She is a self-proclaimed “book worm” and a fearless chef. She also is bilingual in Spanish.

 Dr. Scott Creswell

No, your eyes are not deceiving you... Dr. Scott is Dr. Creswell's son! We are so happy and proud to have two generations of "Creswell" working at Rialto Animal Hospital and we have no doubt that you will be just as delighted!

Throughout his childhood and early adult years, Dr. Scott grew up watching and helping his dad at Rialto Animal Hospital. He soon realized that he had the same calling to veterinary medicine and decided to attend Western University of Veterinary Medicine so he could work alongside his dad as a veterinarian. In March 2017, his dream was realized as he became our 5th doctor to join our team. Dr. Scott is an integral part of our dental health team and continues to pursue education about new and advanced techniques to bring to the dental team in order to ensure our patients are being given the best dental care possible. He also is passionate about surgery.

Dr. Scott is a self-professed "foodie" and while some of his hobbies include "anything in the mountains", hiking, and playing basketball... enjoying his new baby girl (Dr. Creswell's 4th grandchild) understandably takes up most of his free time these days. 


Meet Our Care Team!!

Our Client Service Representatives are the first smiling faces you will see when you visit Rialto Animal Hospital. They are first and foremost in the care of you and your pets and provide assurance of the care you will receive during your visit. 
Our team includes Diana, Breanna, Carolyn and Jenny. They are here to make you feel welcome and comfortable!




Breanna recently moved to the area from Northern California (and we are SO glad she did as she is an amazing addition to the RAH family!!)  where she studied wildlife management at Humbolt State University. She has worked in the veterinary industry for the past 4 years and greatly enjoys working with animals and their humans. In her spare time you might find her with binoculars, exploring the Southern California area and learning the native bird species that were uncommon in Northern California. Breanna also enjoys cooking, video games, and spending time with her three-legged Chihuahua mix, Ellie. 

Each of our amazing veterinary assistant and technician team each bring unique background and experience to our hospital.  Most have had formal training, either through an accredited technician program or a University. Nearly 40% of our team have earned four-year college degrees. We are also very proud to say that we have had some of our staff apply (and be accepted) to veterinary school! These people work hard, and they are devoted to doing their best for our patients and their people! Our team includes: Lisa, Alondra, Elsa, Karla, Nicole, Christina, Benny, Jocelyn, Leslie,  Gina, Sabrina, Sherry, Lexy, Maria, Christy, Kristen, Catherine, Taylor Emily, Stephanie and Erik. 


Staff Biographies:

Lisa Norkunas, RVT and Hospital Director has been with Rialto Animal Hospital since 1995. As a child, she and all those around her knew it was "her calling" to work with animals and work in the field of medicine. She graduated with honors from Cal Poly Pomona in 2003 and remains a member of the Golden Key Society. She received her Registered Veterinary Technician (RVT) certification shortly after graduating.  Lisa accepted our hospital manager position in June 2003, and became the hospital director in December 2005. She is a member of the Inland Valley Veterinary Technician Association, the California Veterinary Medical Association, the American Animal Hospital Association, the North American Business Association, and the Veterinary Management Group. Rialto Animal Hospital, our clients and their pets are her "second family"!

Sadly, her family had to say goodbye to their long-time pets and our hospital mascots, Maverick and Montana. "The Boys" will always be close to their hearts and live on in the hearts of the many lives they touched over the years. BUT... her family now has two more Golden Retrievers, River and Ryder! As they grow out of "puppyhood", we hope to see them hanging around the hospital like Maverick and Montana did!

When Lisa is not working, she loves spending time with her husband, two daughters and son, and her dogs River and Ryder. She is a Girl Scout Leader, which keeps her extremely busy. She enjoys boating, skiing, wakeboarding, hiking, working out, reading and playing softball. 



Alondra Luna, Hospital Manager and veterinary technician joined the Rialto Animal Hospital family in 2003 after working several years for the San Bernardino Humane Society. From an early age, she knew that caring for the furry family member was her passion. When at work, you can be sure that she strives for improvement, growth, education and provide both clients and pets with the best care.

She received her Bachelors of Science in Pre-Vet Medicine (Animal Health Science) from Cal Poly Pomona in 2006 and a few short years later became assistant manager in 2009.

During her spare time, she enjoys the outdoors, new adventures, doing crafty things or diy projects and being the best dog mom to her "only child", golden retriever Roxy (pictured)

Unfortunately, she and her baby girl said goodbye after 14 wonderful years of companionship, her memory will forever be present. 


Nicole joined our staff in September 2007 and is quite versatile in her roles at Rialto Animal Hospital.  She has taken great strides in her role in the treatment room and continues to go above and beyond to ensure our patients receive outstanding care. Nicole and her husband of 17 years enjoy dinners out and spending time with their nieces and nephews. Nicole is continuing the process of obtaining her RVT license! 


Elsa, a Registered Veterinary Technician has been with us since 2004. She is a graduate of Cal Poly Pomona and is a valuable member of our team. When she is not helping our patients and clients, she is always studying to expand her knowledge. Elsa is detail oriented performs the many of our patient's dental cleanings. We're excited that Elsa has earned her RVT license, thanks to her dedication and hard work!



 Karla has been a long-time veterinary assistant of Rialto Animal Hospital. She has two Siamese mixes, Mugen and Soleil and a "problem child" Schipperke named Sierra (pictured). In her spare time she likes to create art of all kinds, listen to her husband's band play, and groom dogs. Karla recently passed her RVT test!! WAY TO GO KARLA!!  She and her husband Noah welcomed their first child, a baby boy, to their family.


 Benny joined our veterinary assistant team in August 2012, after many years of experience in veterinary hospitals and in the show ring with purebred dogs. He is a big Dodgers and Green Bay Packers fan and likes going to car shows with his wife and six sons. He restores old cars, including his 1950 Chevy and is an active member of a local car club.  He is a self-professed "cat whisperer," and hasn't lost a whisker, yet! He has 6 dogs, including his Giant Schnauzer, Brooklyn (pictured) and 2 cats.


Christina joined the RAH family in 2016 as a Registered Veterinary Technician. The majority of the time you can find her working as part of our dental team, helping treat and prevent periodontal disease. She believes that education, whether providing it to our clients or learning for herself, is the key to being the best advocate for her patients. Christina is always striving to learn new information and techniques in order to improve her skills and patient care. As a child Christina has always loved large dogs and is proud to have two giant fur-babies of her own, Zannah, a Newfoundland, and her big brother Bane, a Great Pyrenees. She also has 3 very spoiled cats (Elliot, Mowgli and Kit). When not at work Christina enjoys reading, drawing, working out in her home gym and cooking new recipes with her husband. 

 Taylor joined our team after finishing her internship with us earlier this year. Yep, another one we just couldn't let slip away! Taylor is originally from Florida where she worked as a veterinary assistant and found herself in California through the military. Taylor has earned her associates in veterinary science and feels like she found her home here in California and at Rialto Animal Hospital. She loves spending time hiking and going on adventures with her husband and daughter. Taylor plans to continue her education by pursuing a goal of obtaining a bachelors degree and RVT license this year. 



Jocelyn is one of our veterinary assistants, who came to us in 2009 as a volunteer and we never let her leave! Her quiet, kind, and giving nature has made her a perfect fit for our team. Jocelyn loves playing sports, particularly soccer and volleyball. She and her husband are now proud parents of two beautiful boys with another baby boy on the way! Jocelyn has one Poodle Mix, Rex.



Lexy is a newer addition to our veterinary assistant team and is one of RAH's Chihuahua enthusiasts. While she is new to the field of veterinary medicine she has loved animals since she was a very young child. Lexy is the mom to five fur-babies, Selena, Amelia, Paco, Panchy and Atlas (Yes, they are all rescued Chihuahuas). On her days off you can find her at the local dog parks or walking her dogs around the neighborhood. Lexy has a deep love for video games, Tim Burton movies and the famous Snoopy & Woodstock. 


 Maria (nickname of Mag) is one of our newer additions to the RAH family. She came on as a kennel attendant and quickly realized she wanted to be more involved in assisting our DVMs, patients and clients in exam rooms and worked her way into becoming one of our valuable vet assistants. Maria enjoys hiking and fitness and going on new adventures exploring the great outdoors. She considers herself a 'foodie' and loves trying different foods. In her free time Maria enjoys sewing and visiting new places. She dreams of traveling the world one day. 

Leslie, joined the RAH family in 2012. As a veterinary assistant, she is a pleasure to work with because she is always smiling, friendly and willing to help. We love how patient she is and what a great listener she is to each and every one she meets. Leslie enjoys eating pasta and watching romantic movies. Over the last few years, she has loved all of the experiences being a mommy has brought her.




Sherry is one of our veterinary assistants who joined the Rialto Animal Hospital family in 2016. She had been a long time client and has worked with animals in many different capacities for over 30 years. From co-owning and managing a boarding/grooming kennel to working in a reptile store, to dog training, to behavior evaluations and adoption counseling at a local shelter, she enjoys anything that involves furry, feathered or scaled critters.  Sherry's free time is spent with her family and friends camping, lazy days at the beach watching her husband and 2 teenaged boys surf, hiking, mountain biking and attending her sons skateboarding events. She has a personal menagerie of pets that include 3 dogs (Piper pictured), a tortoise, 2 snakes, a bird, a rabbit a bearded dragon lizard, 2 beta fish and a new kitten. 


Sabrina came to us as an intern from Carrington college in late 2014. She became an official member of our veterinary assistant team and family shortly after graduation and continues to be a great asset to the team. Sabrina is busy working and studying for her RVT test but continues to make time to spend with her family, close friends and her 2 "sons" Razzle and Tank. She especially enjoys traveling with her boyfriend, trying different cuisines, filming drone videos of hiking and the beach, listening to music and like all girls, shopping! 


 Gina started her career at Rialto Animal Hospital as an intern, and we liked her so much that we couldn't let her leave! Our self-proclaimed resident "hippie" enjoys creating art, tie-dye, drawing and making things beautiful. She loves Disneyland. She is a recently converted "Star Wars Geek," who loves her Chihuahua Peanut... He even has his own car seat and you bet he goes everywhere! Gina makes our staff complete, and we wouldn't have it any other way!!

Kristin is one of our newest additions to the RAH veterinary assistant team. Her gentle nature and love of animals was evident from the start. Kristin's experience at RAH has strengthened her love for veterinary medicine and has further motivated her to continue her education toward her goal of becoming a veterinarian. She is currently attending Cal Poly Pomona working towards her Bachelor's Degree in Animal Science. In her free time she loves reading, photography, and spending time with her two dogs Ginger and Gunner.



Erick is one of our kennel attendants and is currently attending CBU working toward his veterinary degree. He enjoys video games, playing sports (especially soccer, volleyball and football), and writing short stories and poems. Erick loves all animals and volunteered at local animal shelters for 3 years to learn as much as he could about his passion in helping animals.