Story of the Clinic

Olde Towne Animal Medical Center is proud to serve Longmont, CO and surrounding areas. We are dedicated to providing the highest level of veterinary medicine along with friendly, compassionate service. We believe in treating every patient as if they were our own pet and giving them the same love, attention, and care. We are a group of highly trained, experienced animal lovers who are devoted to giving our patients the best care possible.

Meet the Team!

Colleen Carnes, DVM, CVA

A Massachusetts native, Dr. Carnes moved to Longmont in 2004, and earned her veterinary degree from Colorado State University in 2010. While at CSU, she received additional training to become a certified veterinary acupuncturist. She has owned Olde Towne Medical Center since November of 2019, and currently resides in Longmont with her husband and kids, as well as her old man cat Zeus and tripod Cooper.

Susan Muench, DVM

With professional interests that include internal medicine, infectious disease, small mammal species, pediatrics/geriatrics, neurology, ophthalmology, soft tissue surgery and emergency medicine, Dr. Muench has been practicing veterinary medicine for decades at the clinic and through volunteer efforts to support under-served communities. She earned her Doctorate of Veterinary Medicine from CSU in 1990, and her animal family consists of Dani, a Shih Tzu-Poodle mix (who you may have met at the office) and Little Kitty (who is very shy and loves the comfort of home).

Erin Walters, DVM

Erin was born and raised in Boulder County and currently lives in Longmont. She is excited to be practicing in her local community! She graduated from Kansas State University College of Veterinary Medicine in 2011. After completing an internship in Southeast Florida, she practiced in Arvada and Lafayette prior to joining Olde Town in November 2020. Dr. Walters is certified in Fear Fear handling techniques and is passionate about providing low-stress, comprehensive care for her patients. In her spare time, Dr. Walters loves spending time with her husband, son, and two cats

Allison Butt, DVM

Dr. Butt is a relief veterinarian who fills in at Olde Towne whenever they will have her, which is often!  She currently spends most Wednesdays and occasional Saturdays working with the OTAMC team.

A Florida native, Dr. Butt attended the University of Georgia for veterinary school, but has acclimated to life in Colorado with her family, and now considers it home!

Carla Siebert, RVT – Practice Manager

Carla is one of our Certified Veterinary Technicians and the Practice Manager at Olde Towne Animal Medical Center. She is originally from North Dakota but stayed in Colorado after finishing her Business Administration Degree at Colorado State University. Carla wanted to combine her love for animals and desire to help clients be educated about their pets needs by graduating from Bel-Rea Institute of Animal Technology in 2009. After working in human medicine administration, Carla developed strong communication skills and the ability to exceed client expectations. She combined those skills with her desire to give compassionate and quality care to animals. During her time outside of work, Carla enjoys spending time with her family and rescue pets. She also enjoys volunteering, hiking, and camping in the summer.

Alexandra Brugueras (Alex), RVT

Alex was born and raised in Puerto Rico, where she received a BA in Natural Science. She moved to Alabama for Graduate School, then to Colorado to pursue veterinary tech training.

Ever since then, Alex has been working as a veterinary technician in the Denver area, and just recently moved to Longmont and landed at OTAMC.

Alex loves to volunteer and travel with non-profit organizations where she uses her Spanish and veterinary skills to help provide healthcare and education to the less fortunate with donations and kindness.

What Alex likes about her job is working with animals and practicing high quality medicine.  She appreciates the trust that people put in us to care for their beloved companions.

Olivia Lang – Veterinary Assistant

Olivia was born and raised in Baltimore, Maryland before moving to Boulder in 2021. She became a Certified Veterinary Assistant in 2020 after attending Harford Community College in Churchville, Maryland. While earning her certification, she lived and worked on a small farm, eventually moving on to working in a general practice clinic in Baltimore city. There, she became a Level 2 Fear Free Certified professional. After moving, Olivia joined Olde Towne Animal Medical Center in November 2021, and is looking forward to furthering her education in Veterinary Medicine while here. She currently resides in Boulder with her boyfriend, 2 cats, and dog Enzo. In her free time, you can find her rock climbing, mountain biking, or backpacking to a new camping spot.

Jenny – Veterinary Assistant

Jenny entered the veterinary field in 2017.  Prior to veterinary medicine, Jenny was in finance and accounting.  Her love for animals compelled to her to make a career change.  She enjoys living on her urban farm where she tends to her garden, 5 dogs, 10 chickens, and a cat.  She is a Colorado native and has a degree from CU Boulder.  She enjoys the outdoors and spending time with her family.

Letícia Figueiredo – Veterinary Assistant

Letícia Figueiredo was born and raised in Brazil. In April 2019, she moved to the United States to become an au pair, but her true passion has always been animals. Having dedicated her whole life to working with animals and wanting to continue her work with them in the United States, Letícia joined Olde Towne Animal Medical Center in 2022 as a veterinary assistant. She is looking forward to becoming certified in therapeutic massage for dogs and horses. Letícia is also a pet sitter and likes to spend her free time outdoors with her adorable husband and her sweet rescue dog Anubis.

Michelle Stoops – Client Care Specialist

Michelle is a Colorado native and has lived in the Longmont area for the past 18 years. She has worked in a school setting and owned a retail business, but has always had a passion for animals.She sold her business and went back to school and became a veterinary assistant in May 2019. Olde Towne Animal Medical Center is her first job since graduation and she is excited to continue to learn and interact with the animals.When Michelle is not working with the animals here, she likes to spend time with her husband and three grown children along with her rescue Pitbull mix, Ellie.


Reach out to us to learn more about how we care for your pet (or schedule an appointment!). We’re excited to welcome you into the Olde Towne family.

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