Sacramento Area
Veterinary Internal Medicine, Inc.
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Our Mission


Sacramento Area Veterinary Internal Medicine is dedicated to providing advanced medical care for your pet.

We want to help you and your pets have a long healthy life together. We treat your pets with the same care and love we would show our own. SAVIM works in coordination with you and your primary veterinarian to optimize the care available to your furry friends.

We are blessed in the greater Sacramento area to have a wealth of highly trained veterinarians and veterinary specialists. In some instances we will involve radiologists, cardiologists, surgeons and other specialists to obtain the best outcome for your pets. This collaborative approach affords the best possible care for your pets.


Internal Medicine


Dr. Spann provides expertise in a variety of internal medicine disciplines. These disease states include: endocrinology, kidney disease, liver and gallbladder problems, genitourinary diseases, pulmonary and upper airway disease, infectious and autoimmune diseases, gastrointestinal disease, and certain oncologic diseases.

We frequently perform endoscopic foreign body retrieval and other endoscopic techniques (rhinoscopy, bronchoscopy, gastroduodenoscopy, colonoscopy, cystoscopy and vaginoscopy). We have a state-of-the-art Vimago CT and fluoroscopy unit to provide advanced imaging for appropriate medical and surgical patients.

What is a Veterinary Internist?

Veterinary internal medicine specialists have received board certification from the American College of Veterinary Internal Medicine after pursuing advanced postdoctoral training in an accredited residency under the supervision of other internists and specialists.

They must fulfill credentialing requirements, meet an original scientific article publication requirement and pass two series of vigorous board certification examinations.

The process of board certification prepares veterinary internists to manage a large variety of complicated medical cases, making us experts in our field and creating more efficient and cost effective approaches to medical diagnosis and disease treatment.

What do Veterinary Internist do?

Veterinary internists handle cases on a referral basis from other veterinarians. These cases are referred because they need special advanced care, special procedures like: bone marrow biopsies or endoscopy, or have atypical or difficult to diagnose disease processes.

Internal medicine cases vary widely. We frequently manage unusual or complicated medical conditions in the subfields of: endocrinology gastroenterology, urology, pulmonology, infectious diseases, diseases of the immune system, hematologic conditions as well as others.

Internists perform involved and special procedures like endoscopy, foreign body retrieval, bone marrow biopsies, and design advanced plans to diagnose and treat challenging or serious diseases. Because the cause of disease is often not immediately apparent, logical problem solving is essential.

Available Veterinary Services:


CT is an advanced imaging modality which uses X-rays and computer reconstruction to give 3 dimensional information about a patients bones and organs. We use the advanced Vimago CT/fluoroscopy unit by Epica to evaluate nasal cavities, inner ears, skeletal problems, internal organs and tumors.


Endoscopy means to look within. We have a variety of rigid and flexible endoscope to examine noninvasively inside our patients. We regularly perform rhinoscopy, pharyngoscopy, tracheobronchoscopy, gastroduodenoscopy, colonoscopy, vaginoscopy, cystoscopy, as well as retrieving swallowed or inhaled foreign bodies.


A variety of diseases result in anemia and other blood problems. We utilize transfusions to treat anemias, platelet problems, correct coagulation problems and other disorders.


Infections and immune disorders can have overlapping and confusing clinical signs. We specialize in diagnosing and treating infectious and immune mediated diseases.


Just like humans, dogs and cats develop a variety of endocrinologic problems. Pituitary, thyroids, parathyroids, pancreas, and adrenal gland diseases occur more commonly as dogs and cats age. Internal medicine specialists excel at the diagnosis and treatment of endocrine diseases.


Blood elements are made in the bone marrow and other organs. Aspiration or biopsy of the bone marrow is sometimes required to identify the cause of red cell, white cell or platelet problems or to screen for cancers.


Veterinary internal medicine specialists manage a wide variety of disease states including: infectious, immune mediated, endocrine, kidney, urinary, liver and GI diseases, hematologic and pulmonary disease.


Sick dogs and cats occasionally require hospitalization and advanced care with intravenous fluids, IV nutrition, specialized. Injectable drugs and 24 hours care. They may even need onging nutritional support while they heal from their sickness. We have the capability to place and manage specialized feeding devices where appropriate. Veterinary patients also frequently require special sized and formulations of mediations. We work closely with pharmacists to develop routes and formulation of therapeutics that maximize the chance for successful ongoing therapy.


Allied Services


Why do we work with other Veterinary Professionals?

Some pets have medical conditions that require multiple veterinary disciplines to manage effectively. The best outcomes frequently come from teamwork and collaboration. We are blessed in the greater Sacramento area to have an abundance of veterinary specialist with whom we can collaborate to bring the best healthcare to your furry companions.

We sometimes collaborate with radiologists, surgeons, cardiologists, dermatologists and other specialists to holistically address the needs of dogs and cats with multiple problems. We strive to bring multimodal expertise to reach the best outcome for your special family members.

Allied Veterinary Services:


Radiology – Xray imaging, ultrasound and CT are essential techniques to identify disease processes.

We work closely with the radiologists of Veterinary Medical Imaging to provide radiologic review of X – rays and Computed Tomographic (CT) studies. They also provide advance ultrasound and other imaging studies as needed by our patients. We are pleased to have access to some of the finest veterinary radiologists here in the Sacramento Area.


Surgery is an important allied field to internal medicine. Some medical problems require surgery to help treat or resolve.

Some of our internal medicine patients have problems that require surgical interventions as part of their therapy or to remove underlying problems. We have worked closely with Dr. Justin Uhl of Summit Veterinary Surgery Services and Dr. Scott Christopher of the Ethos Pet Emergency Center and as well as other gifted surgeons in the Sacramento area as need arises.


Cardiology consults usually aim to look for the underlying causes of coughing, exercise intolerance, arrhythmias and murmurs.

Dr. Brian Mackie provides. Cardiac ultrasound and cardiology advice for patients needing additional expertise. He helps identify and manage the causes of arrhythmias, heart failure and characterizes the cause and seriousness of murmurs. Cardiac ultrasound can be useful for the identification of pulmonary hypertension and staging of heartworm disease an in dogs and cats.


Some pets have acute medical problems that need immediate attention or require in hospital care over a longer period of time.

We work in coordination with Ethos – Pet Emergency Center to provide 24-hour care to inpatients when required and to provide emergency care should that be necessary. The Pet Emergency Center has built a team of very experienced and capable veterinarians who provide special emergency care.


Providing medications to dogs and cats can be uniquely challenging. Sometimes we need to think “outside the box”.

Dogs and cats sometimes have special requirements in size or formulation of their medications. Giving medications can be trying for some patients. We work closely with local compounding pharmacists to provide formulations and routes of treatment to optimize patient compliance and acceptance wherever possible.



After hours and weekend care are coordinated between SAVIM and Atlantic Street/Ethos Pet Emegency Center as appropriate. We are pleased to work with PEC's gifted and experienced emergency clinicians.


Our Team


Dennis Spann, DVM, DACVIM

Small Animal Internal Medicine

Special interests:
Infectious Diseases, Immune Mediated Disease, Endocrinology, Endoscopy

Dr. Spann is a 1996 graduate of UC Davis School of Veterinary Medicine. Following graduation he completed an internship at North Carolina State University College of Veterinary medicine, before returning to complete his residency in Internal Medicine at UC Davis. He has been the recipient of numerous student, intern and resident awards. Dr. Spann received his specialty board certification from the American College of Veterinary Internal Medicine in 2000. Dr. Spann enjoys all aspects of internal medicine. Particular interests include: immunology, infectious disease, sepsis, endocrinology, gastroenterology and hepatic disease, and all endoscopic procedures.

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Dr. Spann lectures locally, nationally and internationally on a variety of subjects including sepsis, hospital acquired infection, a variety of endocrine disease. He gave postgraduate endocrinology lectures at the International Academy of Veterinary Medicine in Nanjing China and at the Western China Veterinary Conference in Chengdu China. Dr. Spann has served on multiple educational committees including 5 years on the American College of Veterinary Internal Medicine's credentialing exam committee for board certification 2012 - 2016, and the AVMA BCSE exam development - 2015, 2016

Selected Lectures: ACVIM forums – 2018 Prevention and Management of Multidrug-resistant Infections, 2017 – Antibiotic Pearls for the Veterinary Technician 2016 Creating a Culture of Infection Control in Private Practice, ACVIM 2015 Hospital Acquired Infections I - Risk Factors and Pathogens, Hospital Acquired Infections II - Preventative Strategies, ACVIM 2014 Sepsis in Dogs and Cats - Pathophysiology and Recognition.

Publications- Multiple chapters in Infectious Diseases of Dogs and Cats, Weese and Evason eds. (in press). Leukocytosis and Leukopenia, Textbook of Veterinary Internal Medicine, Eds. Ettinger, Feldman and Cote, 8th ed. - in press. Clinical Veterinary Advisor: Polyphagia, Stunted Growth, Ist and 2nd eds.

When not working, Dr. Spann likes gardening, exercising, reading and spending time with his human and pet family.


Ericka Wilcox, BS, RVT

Special Interests:
Internal Medicine & Neurology

Ericka graduated from UC Davis with her bachelor of science in Animal Science in 2002. She brings a great wealth of knowledge have worked in the field for 16 years. Her past areas of focus include: Small Animal General Practice, Shelter Medicine, Neurology, and Internal Medicine.

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She enjoys Internal Medicine because of the variety of case types and the diagnostics and treatments that help our patients recover. When Ericka isn't at work she enjoys being outside, salsa dancing, cycling, sweets, and working on her fitness.


Cheryl Owens, RVT

Special Interests:
Internal Medicine & Emergency Medicine

Cheryl has worked in the veterinary field since 1996. She has worked in a variety of specialty fields including: emergency medicine, orthopedic surgery, ophthalmology, dermatology, exotic and zoo medicine as well as internal medicine. Cheryl has also been an instructor teaching aspiring veterinary technicians.

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She bring a wealth of knowledge and experience to the practice. Cheryl is an avid outdoors person and enjoys camping, hiking and hunting with her family and dogs. She is also an accomplished cook and baker. She loves spending time with her family and her furry friends, two dogs, a cat and a cockatiel.


Amanda Clark, RVT

Special Interests:
Internal Medicine & Emergency Medicine

Amanda has been in the veterinary field for 11 years. She became a CVT 10 years ago. Amanda has worked extensively in emergency and critical care but expanded into internal medicine over the lasts couple years. She loves all animals and loves to provide the intensive nursing care that comes with internal medicine and emergency.

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Amanda's favorite parts of internal medicine is getting to know the patients and their families. She also enjoys assisting with advanced specialized procedures like CT scanning and endoscopy. When she is not at work, she spends her time caring for her mini farm of rescued animals. From goats and chickens, to snakes and lizards, and of course the three dogs and cat who run the household.


Our Office


Sacramento Internal Medicine is located within the same working space as the Pet Emergency Center at 1100 Atlantic Street, Roseville, CA 95678. This allows for seamless transition for patients who need to work with both medical groups.


New Patients


Sacramento Area Veterinary Internal Medicine, Inc.

Please call SAVIM at (916) 783-2428 to schedule an initial consultation. At that visit we will review your pet’s prior medical records and develop diagnostic or treatment plans to improve your pet’s health.

Please bring relevant medical records or give us your veterinarian’s contact information so that we can optimize your appointment time.


Our Office


Sacramento Area Veterinary Internal Medicine, Inc.

1100 Atlantic Street
Roseville, CA 95678


Tel: 916.783.2428

Fax: 916.783.7916

Name *