Our Team

Christina Tinetti : Owner/Veterinarian

Christina Tinetti


Christina is the founder and owner of Guardian Angel Veterinary Care. She started this clinic with the philosophy that all animals should have the opportunity to receive quality veterinary care and is hoping the clinic and its veterinary services will provide a chance for more animals to receive necessary care even when finances may be limited.

Christina graduated from Colorado State University and enrolled in a year-long shelter medicine internship.  She always had the desire to work with the "less fortunate" animals (ie homeless animals or those animals unable to get the medical attention they need).  It was difficult working at the shelter and seeing how many animals needed homes, but it was an educational experience and helped shape her career goals.

After her internship, Christina decided to work at a local low cost veterinary clinic providing veterinary care for pets who might not have received treatment otherwise.  She also had the opportunity to assist in local and international spay/neuter clinics with the goal of decreasing the numbers of homeless animals.  Christina continues to assist with this through her work with a Fort Morgan spay/neuter clinic.

Aside from her veterinary career, Christina lives in Denver with her husband and their crew of rescued animals including a paralyzed chihuahua with her cart, some backyard chickens, and a beehive.  She loves to snowboard and garden on her free time, and she is looking forward to a time when she can go on a tropical vacation.

Lindsay Matheson : Veterinarian

Lindsay Matheson


Lindsay is originally from the Chicago suburbs and earned her Bachelors of Science degree from DePaul University. She moved to Colorado in 2007 to attend veterinary school

After graduating from CSU, she volunteered for a local animal shelter and was saddened by the number of homeless animals available for adoption. She became committed to helping the pet overpopulation problem through low-cost spay and neuter, and began working at a veterinary clinic dedicated to that mission.

Lindsay joined GAVC in November 2015 and is excited to work with Christina and her caring staff to provide high quality, compassionate veterinary care at a reasonable cost.

She lives with her husband Bill, their Lab mix Molly, and their newly adopted cat, Mimi. In her free time she enjoys baking, cross stitching, and running. Her dream is to travel the country in an RV and visit all of the national parks.

Theresa Calderon : Certified Veterinary Technician

Theresa Calderon

Certified Veterinary Technician

Theresa is a Certified Veterinary Technician. She received her education from Community College of Denver. Theresa graduated in May 2013 with an Associate of Applied Science degree in Veterinary Technology. Shortly after graduating, Theresa worked at a low-cost veterinary clinic in Denver before joining our team in October 2015. She believes that everyone should have the option of affordable veterinary care.

Chrissy Garcia : Veterinary Assistant

Chrissy Garcia

Veterinary Assistant

Chrissy is a Colorado Native, grew up in Denver and now lives in Northglenn.  She graduated from Pima Medical Institute in 2001 and became certified as veterinary assistant.  Before joining Guarding Angel Veterinary Care, Chrissy worked at another low cost veterinary clinic where she first learned about the spay/neuter mission and how it helps reduce pet overpopulation.

Chrissy loves taking care of animals and enjoys the career she has chosen.  She will be continuing her education by going back to school to become a certified veterinary technician.  She is married with two kids, three cats and one dog.  Chrissy enjoys watching Denver Broncos Football (if you couldn't tell from her picture), reading, playing video games and scrapbooking.

Andrea Blazon : Veterinary Assistant

Andrea Blazon

Veterinary Assistant

Andrea was born and raised in Lafayette, CO. She has always had a love for animals since she was younger- from having a cat and dog to a trantuala and hamster. No matter what kind of animal it was, she always wanted to help and care for them. With her love for animals, Andrea decided to attend Pima Medical Institute, graduating December of 2015. She plans on going back for a veterinary technician certification. In her free time, she loves hanging out with family and friends, going hiking, and most of all loves, LOVES anything Halloween or scary. She's a thriller!

Summer Smith : Veterinary Assistant

Summer Smith

Veterinary Assistant

Summer was born and raised in Virginia. Summer has had a love for animals ever since she was a young child. She has grown up with tons of animals. From dogs, cats rabbits, snakes, chickens and even ducks, caring and helping animals is her passion. Summer studied Marine Biology at Miami University prior to moving to Colorado.
She even did shark tagging while living in Miami.

Summer started working at GAVC October 2018. She’s been a great addition to our team. While not at work she enjoys spending time with friends, hiking and her dog Scruffy.

Chelsie Marroquin : Veterinary Assistant

Chelsie Marroquin

Veterinary Assistant

Chelsie was born and raised in Illinois. Chelsie has always had a big heart for animal since she was young. Chelsie moved to Colorado in February 2018 with her fiancé, Kyle. Chelsie attended Community College of Denver Veterinary Assistance program. She graduated December 2019. Chelsie joined our team January 2020.

Chelsie has a Border Collie named Dudley. Chelsie adopted a kitten in summer of 2020 named Cosmo. In her free time Chelsie is busy planning her wedding but enjoys camping, hiking, traveling, concerts and taking Dudley to the dog park.

Emily Saenz : Veterinary Assistant

Emily Saenz

Veterinary Assistant

Emily is Colorado native. Born in Denver, raised in Brighton. Emily graduated from Pima Medical Institute May 2016 with a certificate in Veterinary assisting. Emily worked at an animal shelter in Fort Lupton prior to working at GAVC. Emily joined our team in November 2017.

Emily has a whole house full of animals. She has 2 dogs. Doja and Denhaly. A hamster Snooki. Leopard gecko Katana. Bearded dragon Draco. Two Axolotl‘s Grimmy and Gruffy. In her free time Emily enjoys spending time with her friends and cousins, going to concerts, traveling and shopping.

Bree Lucero : Veterinary Assistant

Bree Lucero

Veterinary Assistant

Bree moved to Colorado from Omaha, Nebraska in 2013. She always knew her passion was to work with animals and to be around people who shared her passion as well, so becoming a vet assistant at Guardian Angel was an easy transition! Bree currently has two Siamese cats, Charlotte (pictured) and Winston, who are her favorite part of everyday!

In addition to working with animals, Bree enjoys spending time with her husband, hiking, traveling, mentoring teenage girls, and you can find her at coffee shops and vegan restaurants around the US.

Aspen Whelan : Veterinary Assistant

Aspen Whelan

Veterinary Assistant

Aspen is a Colorado native, raised in Commerce City. Growing up, always having animals in her household, she knew working with animals would be a career path for her. She attended Community College of Denver Veterinary Technician assistant program. She graduated May 2020 with a certificate in veterinary assisting. Shortly after graduating Aspen join the GAVC team in July 2020.

Aspen has a chihuahua named Chico and a fish named Bubbles. Aspen and her boyfriend enjoy camping in the summer time. She also likes painting and baking.

Reilly Shine : Veterinary Assistant

Reilly Shine

Veterinary Assistant

Reilly was born and raised in eastern Colorado. Reilly grew up with tons of animals. From dogs, rats, horses, hamsters, hedgehogs and tortoises, she clearly has loved animals starting at a young age. Reilly attended Bel Rae Animal Institute. Reilly started working at GAVC in September 2020.

When not at work, Reilly loves to spend time with her dog Tucker and boyfriend. She also likes concerts, paddle boarding, and playing video games.