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Joseph Bisignano

Dr. Bisignano
Veterinary Specialist
Internal Medicine
Dr. Bisignano

Dr. Joseph Bisignano originally grew up in Brooklyn, NY and graduated from New York University with a Bachelor's Degree in Psychology and Biochemistry in 2006. He attended veterinary school at Western University of Health Sciences, graduating in 2010. He went on to complete his internship in small animal medicine and surgery at VCA West Los Angeles Animal Hospital, followed by completion of his residency in Internal Medicine at the University of Minnesota. Dr. Bisignano is a board certified specialist in Internal Medicine.

In the field of small animal internal medicine, Dr. Bisignano’s interests include endocrine diseases, ultrasound, endoscopy and management of gastrointestinal disorders as well as liver and biliary diseases. He has a special interest in marine mammal medicine, specifically Bottlenose Dolphins, having worked as both a marine mammal trainer and veterinary preceptor at the New York Aquarium, Dolphin Quest Hawaii and the US Navy Marine Mammal Program in San Diego. Dr. Bisignano has published articles about feline endocrine diseases as well as inflammatory bowel disease in dogs. He has two dogs, a Rhodesian-Ridgeback mix named Brodie and a Maltese named Shorty. Dr. Bisignano in the office and available for consultations and transfers from Wednesday to Saturday every week.

Internal Medicine

Welcome to VCA West Los Angeles Animal Hospital's Internal Medicine Department. While having to see an internal medicine specialist can be stressful, we are here to make your visit and your pet's stay as comfortable as possible. Our Internal Medicine Department has specialized technology as well as the expertise to help diagnose and treat your pet, but our mission is also providing you and your pet with compassionate care and the best client service possible.

What Is A Veterinary Internal Medicine Specialist?

A board certified veterinary internal medicine specialist is a licensed veterinarian who has completed a one-year internship program followed by a three-year residency in internal medicine. Following successful completion of a comprehensive examination and acceptance of a publication in a peer-reviewed journal, the doctor becomes board certified and a Diplomate of the American College of Veterinary Internal Medicine. An internal medicine specialist has advanced training in the following disciplines:

  • Endocrinology
  • Cardiology
  • Gastroenterology
  • Hematology (study of the blood)
  • Immunology
  • Infectious Diseases
  • Nephrology/Urology
  • Neurology
  • Respiratory Diseases
  • Oncology

Within the discipline of veterinary internal medicine, there are also veterinarians who specialize further in Small Animal Medicine, Cardiology, Neurology, and Oncology.

Why Does My Pet Need A Veterinary Internal Medicine Specialist?

Just as your own primary care physician may feel the need to refer you to the care of a specialist from time to time, your general practitioner veterinarian may feel your pet needs a specialist with intensive training and advanced diagnostics and therapies to help diagnose or treat a particularly complicated medical problem. Veterinary Specialists work in concert with primary care physicians to ensure the very best outcome for your pet.

What Health Problems Does A Veterinary Internal Medicine Specialist Treat?

Board certified internal medicine specialists are trained to treat the most serious diseases and health problems that affect pets. They are also especially prepared to care for pets that may be facing multiple health problems. Thanks to better health care, more and more pets are living longer lives. As a result, an increasing number of older pets, just like older people, are coping with multiple disease states that can be very difficult to manage. For example, a cat with diabetes may also be suffering from kidney failure, or a dog in heart failure may also be diagnosed with cancer. Internal medicine specialists are uniquely prepared to oversee the care of these complicated cases. In other situations, a younger animal may develop a problem that used to be considered untreatable but is now manageable and perhaps even curable.

Here are some common diseases that frequently lead general practitioner veterinarians and concerned pet owners to seek the expertise of a specialist:

  • Cancer
  • Heart Disease
  • Gastrointestinal Diseases
  • Diabetes Mellitus
  • Immune Related Disorders
  • Kidney Dysfunction


Our Internal Medicine Department offers an array of resources that provide further information to help pet owners become informed about many diseases and health issues affecting pets. Please feel free to browse, view our videos and download any of the documents from our resource library below:



Our Internal Medicine Team

Practice Limited to Internal Medicine
Internal Medicine Resident
Internal Medicine Resident
Chief Medical Officer
Internal Medicine Resident
Veterinary Specialist
VCA West Los Angeles Animal Hospital

1900 S. Sepulveda Blvd

Los Angeles, CA 90025

Main: 310-473-2951

Fax: 310-979-5400

Hospital Hours:

    Mon-Sun: Open 24 hours

Other Hospital Hours:

Open for emergencies 24/7. No appointment is needed.
For Specialty Services, please call for availability and to schedule your pet's appointment.

Are you a Primary Care Veterinarian? We have dedicated resources for you.

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