Internal Medicine


  • Biology and Anthropology, Stanford University
  • Doctorate of Veterinary Medicine, Cornell University

Advanced Training

  • Small Animal Rotating Internship, University of Missouri
  • Small Animal Internal Medicine Residency, Cornell University
  • Sabbatical, Mayo Clinic
  • Sabbatical, Phoenix Children’s Hospital

Board Certification
Diplomate of the American College of Veterinary Internal Medicine (DACVIM)


  • Editor and Contributor, Small Animal Internal Medicine for Veterinary Technicians and Nurses
  • Contributor, Diseases of the Gallbladder and Extrahepatic Biliary System, Textbook of Veterinary Internal Medicine, Seventh & Eighth Editions
  • Chronic Liver Disease, Clinicians Brief
  • Gallbladder disease in Shetland Sheepdogs, Journal of the American Veterinary Medical Association

Ale Aguirre DVM, DACVIM is an Internal Medicine Specialist and the owner of Salt River Veterinary Specialists. Dr. Aguirre spent many years practicing internal medicine in Phoenix before setting out to open his own practice. Dr. Aguirre enjoys all aspects of internal medicine but has a special interest in minimally invasive procedures. Over the course of the past 10 years, Dr. Aguirre has participated in the research and development of veterinary specific medical devices that have aided in the treatment of tracheal collapse, kidney stones, and a variety of gallbladder disorders in dogs and cats. In addition, Dr. Aguirre completed a sabbatical at Mayo Clinic in interventional endoscopy and endourology. Combining this experience, along with years of research and development, Dr. Aguirre is currently pioneering new endoscopic procedures and equipment for the treatment of urinary and gallbladder diseases in dogs and cats.

Dr. Aguirre specializes in interventional procedures that include removal of bladder and kidney stones, treatment of urinary incontinence, and correction of tracheal collapse. Dr. Aguirre performs minimally invasive laparoscopic procedures including liver, intestinal, and pancreatic biopsies, as well as, spays and neuters.

When not practicing, Dr. Aguirre can be found on the sidelines of soccer, basketball, hockey, and tennis cheering on his two young sons.

Steph Shaver, DVM, DACVS-SA, MS

Soft Tissue and Orthopedic Surgery


  • Bachelor of Arts, University of Colorado
  • Doctor of Veterinary Medicine, Colorado State University
  • Master of Science (Health Professions Education), Rosalind Franklin University of Medicine & Science

Advanced Training

  • Small Animal Medicine and Surgery Internship, University of Georgia
  • Small Animal Surgery Residency, University of California, Davis

Board Certification
Diplomate of the American College of Veterinary Surgeons-Small Animal (DACVS-SA)


  • Laparoscopic Splenectomy. Shaver SL & Singh A. In: Small Animal Laparoscopy and Thoracoscopy, 2nd ed. 2022. Wiley & Sons. Eds. Mayhew PD, Fransson BA.
  • Clinical features, treatment, and outcome of dogs with Coccidioides osteomyelitis. Shaver SL, Foy DS, Carter TD. Journal of the American Veterinary Medical Association. 2021;260(1):63-70.
  • Retention of basic suturing skills with brief or extended practice in veterinary students. Shaver SL, Yamada N, Hofmeister EH. Veterinary Surgery. 2020;49(6):1239-1245.
  • Correlation between student self-assessment and proctor evaluation in a veterinary surgical laboratory. Schock S, Shaver SL, Craigen B, Hofmeister EH. Journal of Veterinary Medical Education. 2021;48(5):584-591.

Steph Shaver, DVM, DACVS-SA is a small animal surgeon and enthusiastic team member of Salt River Veterinary Specialists. Dr. Shaver was born and raised in Colorado and spent a year in private practice there before moving to Arizona to help launch the state’s first veterinary school at Midwestern University. After spending years teaching and working with veterinary students, she is excited to return to private practice and more direct interaction with clients and their beloved animals.

Her areas of interest include surgical oncology, pain management, minimally invasive surgery, and mobility management in arthritic and senior pets. In addition to her surgical training, she is certified in canine rehabilitation and acupuncture and completed a master’s degree in health professions education. She frequently teaches continuing education courses for other veterinarians looking to improve their surgical skills.

In her free time, Dr. Shaver enjoys long walks with her dog, cooking, outdoor adventures and travel.