Veterinary Internal Medicine

All IndyVet specialists have received four or more years of post-doctorate training prior to board certification. This training and experience allows our specialists to manage and treat a wide variety of complex diseases and conditions in collaboration with general practitioner colleagues across the state of Indiana. This collaborative approach to case management allows us to provide the most versatile care available.

The establishment of IndyVet Internal Medicine as a separate clinical department occurred in 2011 in order to deliver better and more efficient care to patients. The goal of internal medicine at IndyVet is to provide compassionate and comprehensive care to our patients, their families, and to referring veterinarians. Each doctor in the internal medicine department has worked in the general practice sector and understands the supportive and collegial relationship desired by practitioners. Our objective is to retain patients only as long as required to identify and resolve the initial crisis, and to then work in conjunction with, or through the referring veterinarian on follow up care.

Some of the Internal Medicine Procedures Commonly Performed at IndyVet:


  • Computed Tomography

  • Endoscopy

  • Ultrasound

  • Continuous Glucose Monitoring

  • MRI

Therapeutics for

  • GI & Hepatic Diseases

  • Cardio-Pulmonary Diseases

  • Neurology

  • Kidney & Urinary Tract Diseases

  • Endocrine Diseases

  • Immune Mediated Diseases

What We Do


Computed Tomography
IndyVet was the first veterinary hospital to offer in-house Computed Axial Tomography (CAT Scans) in the greater Indianapolis Area. Our 24-hour access to high quality transverse imaging allows us to early diagnose and treat complex problems associated with the brain, spinal cord, spine, abdominal, thoracic, and pelvic cavities. We recently upgraded to an 8 slice per rotation scanner that generates extremely fast image acquisition and reconstructions allowing us to perform high speed studies requiring only sedation rather than anesthesia.

We house the latest technology in both rigid and flexible video-endoscopy. This, combined with the expertise and training of our specialists, make endoscopic diagnosis and treatments commonplace in our practice. Rhinoscopy, upper GI endoscopy, colonoscopy, cystoscopy, otoscopy, and arthroscopy are some of the routine diagnostic procedures performed. We also perform minimally invasive thoroscopic and laparoscopic examinations for thoracic and abdominal biopsies and medical procedures.

Ultrasonographic diagnoses are done daily. Our skilled specialists rely on this technology for imaging of the abdomen, pelvic cavity, and thoracic cavity.

Many ultrasound guided biopsies and aspirates are performed in our hospital to provide tissue or cytology diagnoses in a minimally invasive way and can often be done on an out-patient basis.

Echocardiograms, utilizing color flow doppler are routinely carried out to evaluate the function and anatomy of the heart.

Continuous Glucose Monitoring (CGM)
Continuous Glucose Monitoring (CGM) is a non-surgical implantable subcutaneous probe that allows patients to go home while tissue glucoses are automatically collected and recorded 288 times daily for 2 to 3 days. Clients return on day 3 to have the implant removed from their pet (no additional charge for removal) and the data is collected and analyzed. The data is stored on a chip that is downloaded at our hospital where the values are graphed every 5 minutes. The generated curve allows us to identify intermittent Somogyi phenomena, inappropriate administration techniques, or abnormal blood sugar values occurring during overnight hours. CGM provides a superior assessment of daily insulin activity by allowing normal patient activity at home without the stress of spending a day in the hospital for blood sugar sampling.

CGM is also useful for hospitalized new diabetic ketoacidosis patients to avoid over or under dosing insulin in critical patients. In hydrated patients, it can reduce the number of blood samples required and may remove the need for jugular catheter placement sampling in some patients. This monitoring has become the standard of care for human diabetics and will now make the management of veterinary diabetic patients easier as well.

The internal medicine service provides a wide variety of diagnostic and medical procedures including:


  • Cerebral spinal fluid (CSF) tap and analysis

  • Joint tap and analysis

  • Ultrasound guided aspirates and biopsies

  • Bone marrow analysis including core biopsies and aspirates

  • Continuous Glucose Monitoring (CGM)


  • IV nutrition (TPN or PPN)

  • Stomach feeding tubes (endoscopically placed)

  • Esophageal feeding tubes


  • Digital radiographs

  • Ultrasound

  • Echocardiogram

  • CT/MRI


  • Laparoscopy

  • Rhinoscopy

  • Bronchoscopy

  • Cystoscopy

  • Upper GI endoscopy (Gastroduodenoscopy)

  • Lower GI endoscopy (Colonoscopy)

  • Thoracoscopy


Internal Medicine
Our internists, Dr. Tracey Gillespie & Dr. Julie Trzil, lead the internal medicine services team and strive to provide compassionate, state of the art care of critical patients. They diagnose, manage, and treat a wide range of endocrine, metabolic, cardiac, renal, neurologic, hepatobiliary, autoimmune and GI diseases. Their extensive experience in abdominal, thoracic, and cardiac ultrasonography allows them to provide comprehensive patient care and diagnosis. Our internists along with a dedicated and specialized nursing staff provide around the clock care for the sickest patients in our hospital.


The internal medicine service also provides diagnosis and treatment for patients with all types of cancer. They provide chemotherapy and immunotherapy for a large number of patients every week. They also facilitate radiation treatment for patients when indicated. Our oncology and surgery services work closely to provide diagnosis through surgical biopsies, or surgical palliative debulking of tumors prior to definitive chemotherapy. The surgery department works hand in hand with oncology to achieve the best outcome. The goal of the oncology service is to create the best quality of life possible for each patient.

What To Expect

The IndyVet internal medicine team is commited to providing the most innovative and compassionate care for your pet in partnership with your family veterinarian. Many pets can be managed on an outpatient basis while others may need to spend one or two days in the hospital undergoing a comprehensive evaluation and treatment.

At your initial visit, an Indyvet internal medicine doctor will examine your pet, review their medical history, and will talk with you about your pet's condition to recommend any diagnostic tests, or to suggest an appropriate course of medical therapy.

Afternoon and evening visiting hours assures hospitalized patients and their families the opportunity to spend quality time together.

The following guidelines will hasten the diagnosis and treatment of incoming patients:

  1. Unless otherwise directed, please do not feed your pet after midnight the night before your appointment.

  2. Ask your family veterinarian to email, fax or provide you with prior lab work, imaging reports and past treatment related to your pet's problem or illness.

Internal Medicine Staff

Tracey Gillespie, DVM, DACVIM-SAIM, RSO
Molly Bellinger, RVT
Erin Hunt, RVT
Shauna Kitchen, CVT, RVT, CVPM

IndyVet is AAHA Accredited
Donate to IndyVet's AVMF Fund
Care Credit
Fear Free
Cat Friendly Practice
IndyVet is AAHA Accredited
Donate to IndyVet's AVMF Fund
Fear Free
Care Credit
Cat Friendly Practice
IndyVet is AAHA Accredited

Donate to IndyVet's AVMF Fund

Care Credit

Fear Free

Cat Friendly Practice