About Us: Our Staff

Our Mission

Our mission is to provide the best care possible to our patients, to alleviate pain and suffering, to offer the highest level of preventative health care available, the best and most progressive medicine and surgery to our patients, exceptional services to the owners of our patients, to educate owners so they can make the best and most informed decisions for their pets, and to promote the human/animal bond.

The Doctors

Dr. Mike Sheffield received his DVM degree from Texas A & M University in 1985. He did his undergraduate work at Texas A & I (now Texas A & M, Kingsville). Dr. Sheffield began his professional career in the Rio Grande Valley. He then moved to the Dallas area and spent two years there in a mixed animal practice.  In 1990 Dr. Sheffield moved to Wimberley and started Wimberley Veterinary Clinic. Dr. Sheffield is married and has a son. He has three horses, two dogs, three cats and four fish.

Dr. Sheffield's professional memberships include:

American Veterinary Medical Association AVMA
American Association of Equine Practitioners AAEP
Texas Veterinary Medical Association
Texas Academy of Veterinary Practice
Comal County Veterinary Medical Association

Dr. Susan Ferguson grew up in south Austin. She earned both her bachelor's degree and DVM from Texas A&M University, graduating from veterinary school in 2000. After graduation she worked for 2 years at a mixed animal clinic in Conroe TX before moving to the Dallas area. There, Dr. Ferguson continued to broaden her experiences practicing in a small animal clinic as well as an after-hours emergency clinic, and even a feline only practice! In June 2013 she moved back home to be closer to family. Dr. Ferguson, her two children, and their dog and cat now reside in Kyle. Dr. Ferguson feels strongly about offering the highest quality medicine available and educating pet owner's to help them make the best decision for their pet and their family.

Dr. Ferguson's professional memberships include:

American Veterinary Medical Association AVMA
Texas Veterinary Medical Association
Comal County Veterinary Medical Association
The American Association of Feline Practitioners

Dr. Danae de Vries grew up up in a suburb of Chicago.  She earned a bachelor of arts degree from Augustana College.  She followed that up with her veterinary medicine degree from Purdue University in 2016.  While at Purdue she received the American Association of Feline Practitioner's Outstanding Senior Student Award.  Dr. de Vries enjoys working with both large and small animals.

Dr. de Vries professional memberships include:

American Veterinary Medical Association AVMA

Our Staff

Bryan Fowler - grew up in Dripping Springs.  He has an extensive background in animal emergency care.  He joined Wimberley Veterinary Clinic in 2007.

Trina Tew - is a originally from Virginia.  She worked as a veterinary technician at three different clinics before joining Wimberley Veterinary Clinic in 2003.

Jacqueline (Jax) Markel - has been our front office manager since December 2009. She is a native of Sarasota, Florida but has been a Texan for the past 20 years. She completed an associate of science at Houston Community College.

Amanda Filipponi - worked with the Hill Country SPCA before joining our staff in 2010.  As a technician, Amanda particularly enjoys caring for our reptile patients.

Ashley Ritter - joined our staff in 2015 as a technician.  Besides enjoying her work with dogs and cats, Ashley has extensive experience caring for thoroughbred horses. 

Mebdh Abell -pronounced "Mave" is a Texas native with over a decade of experience as a veterinary technician.  Mebdh is also a professional and competitive jouster.  As a jouster, she appreciates horses and has a particular interest in our equine patients.

Alec Flanagan - grew up in Wimberley and is a graduate of Wimberley High School.  He is the "hometown guy" on staff and works as a technician.

Angie Dillon - is one of our receptionists.  When you call into the clinic you are most likely to talk with Angie.

Tiffany Webster - is another one of our receptions.  She is a dedicated dog lover and joined our staff in 2017

Sydney Holloway - has worked as a veterinary technician for five years at two different clinics on the east coast prior to joining our staff in 2017

Tracy Sheffield - is the Practice Manager.  In addition to her administrative duties she is a licensed veterinary technician.  When not at work she is usually riding a horse or working on Animal Chat her radio show on Wimberley Valley Radio.

Maranda Smith - is a student at Texas State University and works part time as a technician assistant.


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Wimberley Veterinary Clinic offers a variety of internships and externships for veterinary students.  We have hosted interns from around the country and around the world.  Please contact our office at wimberleyvetclinic@yahoo.com for more information on our internship program.