ACVS Foundation
Honored Mentor

David A. Allen


I was Dr. Allen’s first intern and subsequently became his first resident. He gave me the opportunity to pursue my love of surgery and become a board-certified surgeon! I continue to use his advice and try to pass on what I can to other veterinarians.

- Jayce A. Lineberger, DVM, DACVS (Small Animal)

Dr. Allen helped me to set the foundation from which I could grow a career. I am grateful for the opportunity he gave me, and I am thankful for the training I received from him.

- Erik Michael Moeller, DVM, MS, DACVS (Small Animal)

I do not think I could have asked for a better mentor as a resident. Dr. Allen instilled in his residents the power of critical thinking, compassion, and, most of all, integrity. The support he has given me in my residency and after my residency has made me the surgeon I am today. I will be forever grateful for his guidance and friendship.

- Tammi L. Ruddle, DVM, DACVS (Small Animal)

Dr. Dave Allen profoundly influenced my life when he welcomed me into his residency program, paving my path to becoming a veterinary surgeon. His exceptional training in surgical principles and techniques was pivotal in my professional development. Beyond his educational role, Dr. Allen’s personal care and attention towards me and his other residents has been inspiring. His mentorship will forever be responsible for enhancing my skills and enriching my personal and professional growth.

- Timothy W. H. Sellmeyer, DVM, DACVS (Small Animal)


  • Jayce A. Lineberger, DVM, DACVS (Small Animal)
  • Erik Michael Moeller, DVM, MS, DACVS (Small Animal)
  • Tammi L. Ruddle, DVM, DACVS (Small Animal)
  • Timothy W.H. Sellmeyer, DVM, DACVS (Small Animal)

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