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.

Jenette Joseph : Veterinarian

Jenette Joseph


Jenette grew up in the mountains of Northern California before moving to Colorado in 2004 to earn her Bachelors of Science degree and Doctorates in Cell and Molecular Biology and Veterinary Medicine at CSU. During her time at CSU she worked in cancer research at CSU's Flint Animal Cancer Center and volunteered with CSU's Pet Hospice Program.

After graduating from CSU in 2016 Jenette continued her work in cancer research at Anschutz Medical Campus in Aurora, while volunteering her spare time at the Denver Dumb Friends League. Jenette was drawn to the animals at the shelter, often abandoned by families who could no longer afford the rising costs of veterinary care, not unlike the community she herself grew up in.

Jenette joined Guardian Angel in March of 2017, very excited to work at a clinic that provides high quality, compassionate veterinary care at a reasonable cost.

She lives with her husband Tom and their 3 children, their horse Mica, their dog Happy, and their 5 cats, Skysong, Luna, Loki, Sandy, and Siggy. In her free time she enjoys playing with her kids, horseback riding, and hiking. Her dream is to travel the world and visit Ireland, Hawaii, and New Zealand.

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!

Christine Hill : Certified Veterinary Technician

Christine Hill

Certified Veterinary Technician

Chris is originally from St. Louis Missouri. She relocated to Denver in 2015 with her husband and 3 dogs--Taz, Arthas, and Nero. She graduated from The Vet Tech Institute at Hickey College in 2012. Chris has worked at several clinics and the Humane Society of Missouri before joining the team at Guardian Angel Veterinary Care in 2017. Her time at the Humane Society made her realize the importance of educating pet owners about spaying and neutering and how it relates to helping reduce pet over-population. She looks forward to helping pets and their owners when they come to visit GAVC.

In her spare time, Chris enjoys watching Cardinals baseball, doing puzzles, and hiking in the mountains with her husband and their pack!

Deisy Rojas : Veterinary Assistant

Deisy Rojas

Veterinary Assistant

Deisy graduated from Pima Medical Institute in 2016. From there, she immediately started working for Guardian Angel Veterinary Care and loves her career as a veterinary assistant. Deisy likes the idea of low cost/affordable veterinary care because it gives everyone a chance for care. She is also very supportive and understands how important it is to spay or neuter your animal.

Deisy was born and raised in Denver, CO. She currently has one dog named Potts who she adopted from the shelter and she believes everyone should adopt from the shelter. Her dog has made her realize that everyone deserves a second chance.

In her free time, Desiy likes to give back to the community, doing outdoor activities, traveling and spending time with her family.