When pets are not feeling well, getting to the root of the problem is vital. Unfortunately, it can be incredibly difficult. Unlike people, our four-legged companions can’t tell us what hurts or describe their symptoms. In fact, it is in their nature to hide their symptoms because, in the animal kingdom, sickness is a weakness. At North Peninsula Veterinary Specialty Group, we understand and are here to help. We provide veterinary internal medicine services for San Mateo area pets and have the diagnostic equipment and knowledge to diagnose even the most puzzling cases.

What Veterinary Internists Do

A small animal internal medicine specialist is a veterinarian who has received extensive training in diagnosing and managing diseases that affect the major body systems of dogs and cats. They are highly trained to put together the information they gather from a pet’s medical history, lab results, clinical signs, and other tests to build a comprehensive picture of a pet’s overall health and diagnose a wide range of problems. Our internal medicine specialists rely on a wide range of diagnostic tools to assess both chronic and acute problems and have the knowledge and experience necessary to handle complex cases, even those that involve multiple organ systems and are difficult to treat.
Internists have in-depth knowledge of several disciplines, including:
  • Endocrinology: Hormonal disorders, including diabetes, Addison’s disease, Cushing’s disease, hypothyroidism, and hyperthyroidism
  • Gastroenterology: Diseases associated with the gastrointestinal tract and pancreas (such as pancreatitis and dysbiosis), which commonly cause symptoms like chronic vomiting, diarrhea, pica, and weight loss
  • Hematology: Disorders of the red blood cells (ie: anemia), platelets (ie: thrombocytopenia), white blood cells, and clotting problems
  • Immunology: Disorders of the immune system
  • Nephrology/Urology: Disorders affecting the kidneys and lower urinary tract, including chronic kidney disease, pyelonephritis, and glomerulonephritis
  • Infectious Diseases: Diseases caused by viral, bacterial, or fungal microorganisms, including leptospirosis and Lyme disease
  • Respiratory Diseases: Diseases affecting the nose, trachea/bronchi, or lungs, such as collapsing trachea, chronic rhinitis, nasal bleeding, and chronic bronchitis
  • Hepatobiliary Diseases: Disorders affecting the liver and gallbladder, including cholangiohepatitis, copper hepatopathy, and chronic hepatitis

Advanced procedures and treatments are sometimes needed to properly diagnose and treat certain conditions. While we perform a wide range of tests and procedures, some of the most common include: 
  • Endoscopy: Used to examine the gastrointestinal tract, urinary bladder, nose, trachea, and bronchi
  • Advanced Imaging: Including ultrasound, fluoroscopy, and CT scans
  • Blood Transfusions
  • Feeding Tube Placement: Esophageal tube, PEG tube
  • Bone Marrow Sampling


At North Peninsula Veterinary Specialty Group, our internist practices veterinary internal medicine in San Mateo Monday through Thursday. Our team is here to provide the highest level of care to your pet and will do whatever is necessary to diagnose and treat any internal problems they may be experiencing. To learn more about our internal medicine services or to schedule an appointment, please reach out to us today.

Want to know more?

Feel free to ask us anything.