Equine Internal Medicine Service

Welcome to the Equine Internal Medicine Service at the UC Davis Veterinary Medical Teaching Hospital. Every day, the board-certified experts at the Large Animal Clinic see dozens of horses. Our team approach to patient care focuses on the goal of providing the highest standard of compassionate veterinary care to ill or injured horses. Veterinary professionals at the VMTH are dedicated to providing a broad range of advanced treatments to horse owners, while simultaneously training future veterinary practitioners and specialists.

As an educational institution, the VMTH can offer an abundance of attentive and personalized care to each animal. Our world-renowned specialists have access to and are developers of cutting-edge equipment, technology and veterinary procedures.

Equine internal medicine is a distinct branch of specialty veterinary care providing knowledge and expertise in a variety of fields. Although most large-animal veterinarians practice some internal medicine each day, specialists at the VMTH have gained valuable experience in diagnosing and treating unusual and complex cases. Our clinicians are supported by state-of-the-art laboratories, diagnostic imaging resources and therapeutic modalities. Faculty and residents are all actively involved in clinical research, which allows us to expand our knowledge and improve the care and well-being of our equine patients.

Clinical Activities and Procedures

Full Service Care – Internal Medicine


Heart problems can be present at birth or may develop later in life. These problems can manifest in several ways including poor performance, intolerance of exercise, presence of a heart murmur, irregular heartbeats, distended veins, poor growth, weakness, or collapse. Accurate diagnosis of heart diseases typically requires advanced diagnostic techniques such as cardiac ultrasound, electrocardiography, echocardiology, color flow Doppler, angiography, chemical/electrical conversion, cardiac catheterization, and blood testing. Our specialized veterinary cardiologists use these techniques in horses as part of the in-depth evaluation needed to determine the underlying problem and to recommend appropriate treatment. Detection of subtle heart problems in performance horses may require evaluation of the heart while the horse is exercised on one of the high-speed treadmills in the Claire Giannini Hoffman Equine Athletic Performance Laboratory.


  • Gastroscopy
  • Abdominal ultrasonography
  • Ultrasound-guided biopsy
  • Abdominal radiography
  • Abdominal fluid collection
  • Musculoskeletal
  • Ultrasound and radiography
  • Ultrasound-guided biopsy/aspirates
  • Muscle biopsy

Neonatal Medicine

Some of the most critically ill patients treated at the VMTH’s Large Animal Clinic are the neonatal foals. Care of these patients is provided by our team of dedicated and highly-trained faculty and resident veterinarians, and patient care specialists. The intensive management and supportive care of these foals is provided in a specialized intensive care unit, the Lucy Whittier Neonatal ICU. Customized stalls are used to pad and support sick foals, allowing around-the-clock care under the watchful eye of the mare in an adjoining stall.


  • Comprehensive neurologic exam
  • Cerebrospinal fluid collection
  • Myelogram, CT scan
  • Slinging capability


Management of cancer in large animals presents several unique challenges to clinicians. Improving patient outcome and enhancing quality of life while realistically addressing owner expectations are important considerations in the treatment of large animal patients with cancer. Our oncology specialists provide comprehensive diagnostic services to accurately identify the type of cancer and guide decisions regarding therapeutic options. The individualized therapeutic plan may include surgery, local or systemic chemotherapy, radiation therapy and immunotherapy, or combinations of these approaches.

Pulmonary Medicine

  • Upper/lower airway endoscopy
  • Pulmonary fluid collection
  • Ultrasound and radiography
  • Lung biopsy
  • Urology
  • Urinary tract endoscopy
  • Transabdominal/rectal ultrasound
  • Biopsy


Monica AlemanMonica Aleman, MVZ, PhD, DACVIM (Internal Medicine, Neurology)
Chief of Service



Gary MagdesianGary Magdesian, DVM, DACVIM, DACVECC, DACVCP, CVA




Carrie FinnoCarrie Finno, DVM, PhD, DACVIM




John MadiganJohn Madigan, DVM, MS, DACVIM




Nicola PusterlaNicola Pusterla, DVM, PhD, DACVIM




Emily BerryhillEmily Berryhill, DVM, DACVIM
Staff Veterinarian




WilliamsElizabeth Graham-Williams, DVM
Resident II



cmoralesCamilo Jaramillo Morales, DVM
Resident I



quattCamilla Quattrini, DVM
Resident I



Sarah SchaleSarah Schale, DVM
Resident III



SkipperLauren Elizabeth Skipper, BVSc
Resident II





Catherine "Sass" Miller

Erica Winans