Our expertise in the diagnosis and treatment of chronic and complex health conditions, combined with compassion and understanding, ensures your pet has access to the best care possible.

At Peak Veterinary Referral Center in Williston, Vermont, our board‑certified internal medicine specialists provide advanced diagnostic and medical care for dogs and cats with complex health concerns. Our team is highly experienced in performing specialized procedures such as abdominal and thoracic ultrasound, bone marrow aspirates, endoscopy, rhinoscopy, cystoscopy, and more to help accurately diagnose challenging internal medicine conditions.

Our dedicated veterinary professionals combine medical expertise with compassion and clear communication to support both you and your pet throughout the diagnostic and treatment process. We specialize in the management of chronic and complex diseases, including geriatric medical care, endocrine disorders, gastrointestinal disease, immune‑mediated conditions, and other long‑term health challenges.

By choosing Peak Veterinary Referral Center, your pet receives access to advanced internal medicine services, state‑of‑the‑art technology, and a compassionate team committed to delivering the highest level of specialty veterinary care in the Burlington–Williston area.

Diseases/Conditions We Treat

Endocrinology

• Hyperadrenocorticism or Hypoadrenocorticism

• Diabetes

• Hyperthyroidism or Hypothyroidism

• Pituitary Disorders

Gastroenterology

• Unexplained Weight Loss

• Acute & Chronic Pancreatitis

• Acute and Chronic Vomiting/Diarrhea

Hepatology (Diseases of the Liver)

• Acute Liver Failure

• Chronically Elevated Liver Values

• Hepatitis

Immune-mediated Disease

• Immune-mediated Hemolytic Anemia

• Immune-mediated Thrombocytopenia

• Polyarthritis

Infectious Disease

• Tick-borne (Lyme, Ehrlichiosis, RMSF, Anaplasmosis)

• Viral, Fungal, Bacterial

Nephrology/Urology (Kidney and urological Conditions)

• Acute & Chronic Renal Failure

• Chronic, Recurrent or Resistant Urinary Tract Infections

• Incontinence

• Urolithiasis

Internal Medicine Diagnostics and Treatments Include:

• Blood gas and blood pressure monitoring

• Bone marrow aspirate and core biopsy

• Computed Tomography (CT Scan)

• Endotracheal wash

• Enteral nutritional support (nasoesophageal, nasogastric, esophagostomy, and endoscopically placed gastrostomy tubes)

• Esophageal balloon dilation

• Joint aspirates

• Minimally Invasive Procedures & Endoscopies

  • Bronchoscopy

  • Colonoscopy

  • Cystoscopy

  • Gastroduodenoscopy

  • Gastroscopy

  • Laryngoscopy

  • Rhinoscopy

  • Vaginoscopy

• Radiography (X-Rays)

• Ultrasonography (abdomen, thorax, cardiac)

  • Ultrasound-guided biopsies