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(480) 497-0222

86 West Juniper Ave
Gilbert, AZ 85233

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Meet the Emergency Veterinary Team at Arizona Veterinary Emergency & Critical Care Center (AVECCC)


Brandi Mattison, DVM, DACVECC

Brandi Mattison, DVM, DACVECC

Dr. Brandi Mattison is a graduate of the University of Minnesota, College of Veterinary Medicine (2002).  Following graduation, Dr. Mattison practiced general medicine in Spokane, Washington where she developed an interest in emergency and critical care medicine.  In 2007, Dr. Mattison pursued advanced training and completed an emergency and critical care internship at Michigan State University.  She stayed at MSU for a residency in emergency and critical care medicine and completed her training in 2011. 

Dr. Mattison’s special interests include disorders of coagulation, acute kidney injury, mechanical ventilation and care of the critically ill post-operative patient.  While at MSU, she received advanced training in mechanical ventilation, peritoneal dialysis, transfusion medicine, as well as many advanced surgical and monitoring techniques.  Dr. Mattison is board-certified by the American College of Veterinary Emergency and Critical Care.


Katherine Smith, DVM,  DACVECC

Katherine Smith, DVM, DACVECC

Dr. Katherine Smith grew up out west in Boise, Idaho.  She went to Tulane University for her undergraduate education and Louisiana State University for her veterinary degree.  Her internship was completed at the University of Georgia.  She then chose to pursue her residency in a private practice setting at Cape Cod Veterinary Specialists in Massachusetts where she received advanced training in mechanical ventilation, surgical emergencies, and advanced monitoring of the critical patient.  After finishing three years on the Cape, she moved to Nashville where she was a solo Criticalist at a private practice for two years and served as the director of the internship program. 

Dr. Smith’s special interests include feline critical care, use of biomarkers for diagnostic and prognostic information, SIRS and sepsis, mechanical ventilation, cardiac and respiratory emergencies, pain management, and post-surgical critical care.  Dr. Smith is board-certified by the American College of Veterinary Emergency and Critical Care.  


Marcella Granfone, DVM, DACVECC

Marcella Granfone, DVM, DACVECC

Dr. Granfone grew up in the Boston area and graduated from Worcester Polytechnic Institute with a degree in biology and biotechnology. She attended Ross University on the island of St Kitts and then completed her clinical year at Colorado State University. After graduating veterinary school, she pursued an emergency focused rotating internship at the Emergency Animal Clinic in Phoenix, AZ, where her passion for critical care began. Dr. Granfone just completed an emergency and critical care residency at the University of Wisconsin-Madison.

Dr. Granfone is happy to be back in a warm climate! Her current interests include snake envenomation, mechanical ventilation, toxicities, canine parvovirus, and sepsis. Dr. Granfone is board-certified by the Amercian College of Emergency & Critical Care.



Emergency Medicine

Kellie Ball, DVM
Kelly Baxter, DVM
Katherine Beckley, DVM
Dana Caldwell, DVM
Allison Edberg, DVM
Kristin Falcone, DVM
Gloriana Halterman, DVM

Antoinette Mursa, DVM
Kelly Parrish, DVM
Kaelyn Petras, DVM
AlexAnne Weinzierl, DVM
Meera Ramesh, BVSC & A-H, DVM
Garrett Rowley, DVM