Animal Reference Pathology

525 East 4500 South Suite F200
Salt Lake City, UT 84107

(180)042-6209 x9


Dr. David Gardiner

David W Gardiner DVM, MS, Dipl. ACVP

Chief Medical and Chief Executive Officer, Veterinary Pathologist

Dr. Gardiner received his Doctor of Veterinary Medicine (DVM) degree from Cornell University and completed his veterinary anatomic pathology residency and Masters of Science (MS) degree at Colorado State University. Dr Gardiner is board certified in veterinary anatomic pathology by the American College of Veterinary Pathologists. Prior to working at Animal Reference Pathology, Dr Gardiner served as the regional head of anatomic pathology for Canada and the western United States for IDEXX Laboratories. A member of the American Veterinary Medical Association, the American College of Veterinary Pathologists and the International Society of Veterinary Dermatopathology, Dr Gardiner is particularly interested in ocular pathology, dermatopathology, and oncologic pathology. Dr. Gardiner is an adjunct professor in the School of Veterinary Medicine at Utah State University, is heavily involved in pathology support of our research clients, and performs the majority of the necropsies at Animal Reference Pathology.

 Contact Dr. Gardiner  


Everett Smith

Everett Smith, MBA

President and Chief Operating Officer

Everett Smith is a business professional with more than 15 years experience in corporate accounting and finance working for Fortune 500 companies in the high tech and medical device industries. As a collaborative team member in a variety of leadership roles at health care products provider Covidien, Everett established an exemplary track record in forecasting, planning and analysis, acquisition integration, investment analysis, and pricing. Management responsibilities included financial reporting for Covidien’s Respiratory & Monitoring Solutions global business unit and the US Patient Monitoring division. Everett holds a B.S. in accounting from the University of Utah and earned an MBA at the University of Denver.

 Contact Everett Smith



Katherine Gailbreath DVM, PHD, Dipl. ACVP

Anatomic Pathologist

In 2004, Dr. Gailbreath graduated from Washington State University's (WSU) Veterinary Medicine program. She then completed the combined Veterinary Anatomic Pathology Residency and Ph.D. program at WSU in 2010.  Dr. Gailbreath's research focused on immunology and infectious disease, specifically on malignant catarrhal fever in American bison. In 2011, she became a Diplomate of the American College of Veterinary Pathologists. She is based out of a large regional specialty hospital (staff pathologist at WestVet Diagnostic Laboratory; Boise, Idaho;  Dr. Gailbreath works regularly with Animal Reference Pathology (ARP) as ARP and West Vet Diagnostic Laboratory have an excellent working relationship--two small regional veterinary diagnostic labs committed to helping each other out.  She has been active in a variety of professional organizations including the Idaho Veterinary Medical Association, the American Association of Veterinary Laboratory Diagnosticians, the Wildlife Disease Association, and the Western Conference of Veterinary Pathology Diagnostic Pathologists.

Dr. Gailbreath reviews a variety of surgical pathology cases but has a special interest in dermatohistopathology, hepatic pathology, and oncologic pathology.  With respect to dermatophistopathology, Dr. Gailbereath has worked with Dr. Thelma Lee Gross on numerous challenging dermatology cases and is an active member of the International Society of Veterinary Dermatopathology.  In addition to the learning opportunities provided by researching and discussing diagnostic cases withe clinical dermatologist and other pathologists, she also receives the Journal of Veterinary Dermatology and enjoys keeping current on new developments in the field. Dr. Gailbreath enjoys living in the northwest and regularly hikes, skis, swims, and bikes with her family which includes (but is not limited to) two rowdy step-kids, one young daughter and one old cat.


Deanna Dailey DVM, PHD, Dipl. ACVP

Anatomic Pathologist

Dr. Dailey earned her Doctor of Veterinary Medicine (DVM) in 2006 from Colorado State University.  She then practiced in a small animal clinic in Las Vegas, Nevada for nearly two years before returning to CSU to complete a residency in Anatomic Pathology.  She became board certified in veterinary anatomic pathology in 2012 and is a member of the American College of Veterinary Pathologists (ACVP).  After completing her anatomic pathology residency, she remained at CSU completing a doctorate in cancer biology studying gene expression changes and the role of small RNA in the progression of canine osteosarcoma. 

Upon completion of her PhD, she was excited to return to diagnostic pathology covering diagnostic service at the CSU Veterinary Diagnostic Laboratory including biopsy service, necropsy service, training residents and teaching for one year before joining the team at Animal Reference Pathology.  Dr. Dailey is excited about all aspects of surgical pathology with a special interest in oncologic pathology.  In addition to ACVP, she maintains membership in the American Veterinary Medical Association.  When not at work she enjoys running, cycling, and hiking with her family.


Dr. Tatiersky

Laetitia Tatiersky DVM, DVSC, Dipl. ACVP

Anatomic Pathologist

Dr. Laetitia Tatiersky completed her DVM at the Ontario Veterinary College, University of Guelph, in Guelph, Ontario, Canada in 2009. In 2012, she completed a three-year general veterinary anatomic pathology degree/residency (Doctor of Veterinary Science, DVSc) at the University of Guelph, with her research focused on fungal skin disease in Northern Leopard frogs. Over the next several years, Dr. Tatiersky worked with and was mentored by Dr. Brian Wilcock of HISTOVET Surgical Pathology, where she handled a full time caseload in small animal surgical pathology. She is board certified in veterinary anatomic pathology by the American College of Veterinary Pathologists.

Dr. Tatiersky enjoys all aspects of small animal surgical pathology, with particular interests in dermatohistopathology (inspired by teaching from Dr. Julie Yager during her training) and oncopathology. Dr. Tatiersky regularly attends clinical dermatology rounds with Dr. Anthony Yu at Yu of Guelph Veterinary Dermatology, and clinical oncology rounds at the Ontario Veterinary College Health Sciences Centre/Mona Campbell Centre for Animal Cancer. She has always had a strong interest in teaching, and remains connected to the University of Guelph through various contract positions involving the Veterinary Teaching Hospital Biopsy and Postmortem Service, teaching graduate students in the Anatomic Pathology DVSc program, and sessional teaching for undergraduate and veterinary pathology courses.

Dr. Tatiersky is an active member of the American College of Veterinary Pathologists and the International Society of Veterinary Dermatopathology. She is licensed under the College of Veterinarians of Ontario.

Dr. Tatiersky resides near Guelph, Ontario, Canada, with her woodworking fiancé and adopted fur-children, including two German Shepherds and four cats. When she is not at her microscope, she can often be found outside - the more snow, the better! She works with Animal Reference Pathology through her independent pathology service, VETPATH Canada (


Karen Trainor DVM, MS, Dipl. ACVP

Anatomic Pathologist

Bio and pic forthcoming!


David J. Gasper DVM, PHD, Dipl. ACVP

Anatomic Pathologist

Chief of Exotic Companion Animal, Zoo Animal, and Wildlife Pathology

Dr. Gasper is a veterinary anatomic pathologist specializing in the diagnostic pathology of non-domestic species including exotic companion and zoo animals, wildlife, and laboratory animals. He received his DVM from Kansas State University, residency training in zoo and wildlife pathology at University of California-Davis and the San Diego Zoo, and a PhD in immunology from the University of Wisconsin-Madison.  He is board certified in anatomic pathology by the American College of Veterinary Pathologists and is a member of multiple professional organizations including the American Association of Zoo Veterinarians, Association of Avian Veterinarians, American Association of Wildlife Veterinarians, and American Association of Immunologists.  Dr. Gasper has his own pathology practice (Pacific Zoo and Wildlife Diagnostics; based in San Diego, CA through which he does pathology work for ARP.

He enjoys providing diagnostic consultation to private veterinarians, assisting non-governmental conservation organizations, federal agencies and researchers in diagnosing and understanding diseases in a broad array of non-domestic species.  Dr. Gasper is passionate about wildlife conservation and supports local and national conservation efforts. He enjoys giving professional and continuing education seminars, and published peer-reviewed articles on diverse subjects ranging from diagnostic veterinary pathology to ferret models of fatal pandemic influenza and influenza vaccine development.


Johanna Rigas DVM, MS, Dipl. ACVP

Clinical Pathologist

Bio and pic forthcoming!



Laboratory & Histology Manager


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Grossing & Clinical Lab Tech


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Grossing & Histology Tech


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