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Marcia Smith

Marcia Smith
Veterinary Specialist
Internal Medicine
Marcia Smith

At a Glance

Practicing Since:


Board Certified:

Internal Medicine

Specialties Include:

Infectious disease

My Pets:

Bradlee Wiggles, Satchel, Diesel, Baxter Brown - Dogs
That's Finnegan - Irish sport horse
Jeff - Cat

Dr. Smith was born in San Rafael, California, and raised in Marin County. She attended the University of California, Davis, earning her bachelor of science in physiology with high honors in 1976. She returned to Davis and earned her doctor of veterinary medicine in 1983, and then completed an internship at Michigan State. Dr. Smith completed her residency in internal medicine at UC Davis and became a Diplomate of the American College of Veterinary Internal Medicine in 1987.

Dr. Smith joined VCA Loomis Basin Veterinary Clinic in 1989, became a partner in 2007, and was medical director from 2008 to 2013.

Dr. Smith and her husband, Tom Johnson, have lived in Loomis since 1992. Five horses and three dogs live with them. She has always been an avid equestrian with significant accomplishments in the sport of endurance and is currently enjoying learning the sport and art of dressage. In her spare time, she also enjoys gardening, cooking, hiking, and running.

See our departments

Internal Medicine

We are pleased to have three dedicated internal medicine specialists on staff at VCA Loomis Basin Veterinary Clinic. Veterinary internal medicine is related to the diagnosis, management, and nonsurgical treatment of diseases of the respiratory, gastrointestinal, endocrine, and reproductive organs, as well as the liver, kidneys, and immune and blood systems. Loomis Basin's internal medicine specialists are experienced with determining both the cause of your pet's illness and the correct course of medication to be used to heal it.

For example, if your pet is vomiting or having seizures, we know that these symptoms might be caused by a problem that is congenital, acquired later in life, or perhaps by an infectious agent or toxic substance in your pet's environment. Internal medicine specialists will help to diagnose the cause quickly and efficiently, leading us to the correct course of treatment.

Drs. Steve Crow, Noelani Reinker, Marcia Smith and Coretta Patterson work together as a team of dedicated internal medicine specialists at Loomis Basin.

AAHA Accreditation

In 2009, our internal medicine service was one of the first in the country to achieve referral practice accreditation from the American Animal Hospital Association. AAHA accreditation testifies that Loomis Basin meets the highest standards of the veterinary profession for patient care, client and referring veterinarian service, and medical protocols.

Referral accreditation reflects that we follow the same high principles that your regular veterinarian lives by and indicates that we know and understand how important communication is throughout the referral. Working together with your general practice veterinarian, our AAHA accreditation status helps ensure optimal care for your pet.

What health problems does an 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 Team

VCA Loomis Basin Veterinary Clinic

3901 Sierra College Blvd.

Loomis, CA 95650

Main: 916-652-5816

Fax: 916-652-5975

Hospital Hours:

    Mon-Sun: Open 24 hours

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

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