

Dr. Lawrence Santistevan
Board-Certified Cardiologist
Dr. Lawrence Santistevan is a board-certified cardiologist in Colorado. He is available to serve general practices and emergency animal hospitals throughout his service area across the Front Range.
Biography
Dr. Lawrence Santistevan is originally from Colorado and earned his Doctor of Veterinary Medicine degree from Colorado State University in 2018. Following graduation, he completed a small animal rotating internship at VCA West Los Angeles in California, where he developed a strong foundation in veterinary medicine through multiple specialties. He then returned to Colorado to pursue a critical care internship at Wheat Ridge Animal Hospital, further refining his skills in managing complex and emergent cases, particularly cardiac emergencies. His passion for cardiology ultimately led him to Cornell University in Ithaca, New York, where he completed a cardiology residency and became a board-certified veterinary cardiologist in 2023.
Dr. Santistevan’s clinical interests include congenital heart disease and complex arrhythmias, areas in which he finds both intellectual challenge and deep professional fulfillment. Beyond his clinical expertise, he is passionate about building strong, lasting relationships with pets, their families, and referring veterinarians. He finds great reward in teaching and mentoring—sharing his knowledge with veterinary students, interns, residents, and veterinarian colleagues to help strengthen their skills in cardiac medicine and elevate the standard of care for patients.
In his free time, Dr. Santistevan enjoys being in the Colorado wilderness, taking every opportunity to spend time outdoors whether in warm sunshine or snowy landscapes. He loves spending time with his two dogs, Echo and Artie, both of whom have their own congenital heart diseases but live full, uninhibited lives. He also enjoys attending concerts and theater performances, embracing the arts as a source of inspiration and joy. Recently, he has found great fulfillment in traveling to other parts of the world, discovering and appreciating the richness of different cultures, landscapes, and climates.
CV
- 2025
Joined MOVES - 2023
Achieved board certification through ACVIM (Cardiology) - 2019
Completed cardiology residency - 2018
Graduated with Doctor of Veterinary Medicine degree from Colorado State University - 2012
Graduated with Bachelor of Science degree in Biology from Colorado State University
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What is a board-certified veterinary cardiologist?
A veterinary cardiologist is a specialist that has advanced training in the heart and circulatory system. To become a board certified veterinary cardiologist a veterinarian usually completes a one year internship followed by extensive specialized training in an approved residency training program (usually 3-5 years).
Board certified veterinary cardiologists focus on diagnosing and treating disease of the heart and lungs, which include Congestive heart failure (CHF), Heart muscle disease (Dilated cardiomyopathy or hypertrophic cardiomyopathy), age-related changes to the valves of the heart (Degenerative mitral valve disease), coughing and other breathing problems, congenital (present at birth) heart defects, cardiac arrhythmias (problems with the rate and/or rhythm of your animal’s heart), diseases of the pericardium (sac surrounding the heart), cardiac tumors, high blood pressure (hypertension), and pulmonary hypertension (high blood pressure in the lungs).
Veterinary cardiology specialists will perform a complete and thorough physical examination on your animal, and based on these initial findings, additional tests will be discussed. Depending on your animal’s condition, diagnostic testing or treatments may include echocardiography (sonogram) – non-invasive ultrasound imaging of the heart, electrocardiography (ECG) – non-invasive electrical reading of the heart’s rhythm, blood pressure evaluation, Holter monitor – 24 hour ECG performed at home, or radiography (x-rays) of the chest and lungs.

