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                Welcome to

Capital Veterinary Specialists, JAX 


                    Animal ER


Capital Veterinary Specialists JAX and Animal ER is committed to providing exceptional specialist and emergency care for those you love the most — your four-legged family members.

Dr. Mark C. Walker, BVSc, DACVIM opened Capital Veterinary Specialists in March 2015 to serve Northeast Florida and South Georgia.

“This is the second office we’ve opened in Florida. We decided to come to Jacksonville because my wife is originally from here, and we wanted to offer her hometown the level of care and expertise we’ve achieved at our sister center in Tallahassee.” DR. MARK WALKER

Originally from Auckland, New Zealand, Dr. Walker graduated from Massey University in 1990 with a Bachelor of Veterinary Science. After working in a referral clinic in Liverpool, England, he was appointed the position of Junior Lecturer at Massey University. He completed his residency in small animal internal medicine at the University of Florida in 1999. That same year, he became a Diplomate of the American College of Veterinary Internal Medicine.

Dr. Walker focuses on patient diagnosis and management as well as actively contributing to veterinary continuing education. He has lectured in the advanced small animal medicine course at the University of Florida in Gainesville, and he presents seminars, lectures and workshops to veterinarians locally and nationally.

Dr. Walker is joined on staff by three specialists, totaling more than 75 years of combined experience in one practice.

Dr. Steven Neihaus, DVM, DACVS, attended the University of Florida in Gainesville for his undergraduate education. After graduating from the University of Illinois College of Veterinary Medicine, Dr. Neihaus spent a year as a general practitioner before completing a rotating internship at the Animal Emergency and Referral Center (now Blue Pearl Veterinary Partners) in Northbrook, Illinois. He became a Diplomate of the American College of Veterinary Surgeons in 2012 after completing his residency in small animal surgery. He specializes in minimally invasive surgery (arthroscopy and laparoscopy), oncologic surgery and soft tissue reconstruction, and complex orthopedic and fracture repair. He joined Capital Veterinary Specialists in May 2015.

Dr. Andre Shih, DVM, DACVAA, DACVECC is double-boarded in Veterinary Anesthesia and Analgesia and in Veterinary Emergency and Critical Care. Following his residency and fellowship, he spent 12 years on faculty as an associate professor in the Department of Anesthesia at the University of Florida College of Veterinary Medicine. He joined the Capital team in 2016.

Dr. Brett Darrow, DVM, CCRP, DACVS, earned his veterinary degree from University of Wisconsin, performed a small animal rotating internship followed by 2 years in private general practice, and completed his residency in small animal surgery at the University of Tennessee. He also completed his training to become a Certified Canine Rehabilitation Practitioner during his residency program. He became part of the team in August 2017. His current research lies in 3D printing bone models and surgical guides to improve the accuracy and efficiency of orthopedic surgery. His focus is in minimally invasive surgery, wildlife and exotic animal surgery, and complex orthopedic procedures.

Our Animal ER Doctors are Dr. Fernando Garcia, DACVAA,  Dr. Matthew Parisi, DVM, Dr. Corinne Thompson, DVM, Dr. Daniel Nichols, DVM, and Dr. Mayra Apolo, DVM. Dr. Fernando Garcia was formerly Service Chief of Anesthesia at the University of Florida, College of Veterinary Medicine.  Both Dr. Parisi and Dr. Thompson are graduates of the University of Florida's College of Veterinary Medicine and completed rotating internships with Capital Veterinary Specialists JAX.  Dr. Nichols and Dr. Apolo are graduates of Ross University and completed rotating internships at VCA SouthPaws Veterinary Specialists and Emergency Center of Fairfax, VA. They are all working with Dr. Shih to offer Veterinary Emergency Care receiving patients 24 hours a day, seven days a week.

With a variety of specialists, the doctors at Capital have the unique ability to work as a team from diagnosis to rehabilitation.

“We can diagnose and manage complex disease, control pain, operate, and rehabilitate an animal all under the same roof. We all work in sync with one another to offer the best possible care for each pet. We also have overnight amenities onsite, so our patients do not have to be relocated for continuity of their care. This helps keep them both as stress-free and pain-free as possible. Our staff is available 24/7 to make sure these animals are well cared for.” DR. MARK WALKER

Each specialist is trained to work with your primary veterinarian to offer a level of expertise, care and communication that makes pet owners feel confident that they are receiving an exceptional healthcare.

“We’re here to support the family veterinarians in the community. We work hand in hand with our clients’ family vets to make sure everyone is comfortable through each step of the process.” DR. MARK WALKER

Each member of the Capital team, from specialists to support, is committed to staying up-to-date in the most advanced technology and procedures in order to give patients the best care and quality of life possible.

Capital Veterinary Specialists has the latest 'state of the art' equipment including two Sound Digital Radiology units, the Storz Endoscopy (bronchoscope, gastroscope and cystoscope) and Laparoscopy suite, a Samsung RS80A ultrasound unit, a Samsung RS60 ultrasound unit, a DRE Volumax High Flow Veterinary Oxygen System, and latest ventilator oxygen assist therapy. Capital Veterinary Specialists JAX is also the only hospital in North Florida that can offer thromboelastography using the highly sensitive, VCM TEG unit to evaluate clotting function in real time.  Additionally, a Toshiba ONE GENESIS 64 slice Computerized Tomography unit was installed in 2017. This unit is also by far the most advanced veterinary dedicated unit in North Florida. They also carry a full inventory of orthopedic devices, and they have the ability to 3-D print for surgical planning, blending technology with surgery in a way that advances beyond even human orthopedic care. Lastly, Capital Veterinary Specialists has a Hydro Physio Underwater Treadmill, a large a solar-heated swimming pool, and the Companion Laser Therapy Unit by LiteCure  allowing them to offer a full range of rehabilitation services.

“Our charter is to be at the forefront of all advancements in veterinary science and to provide compassionate, multidisciplinary specialist care to North Florida and South Georgia. We also promise to continue our collaborative research, continuing veterinary education, and knowledge sharing among colleagues.” DR. MARK WALKER


  • "God bless the wonderful and loving crew from Capital Vet Specialists! They undoubtably saved the life of my beloved boxer pup Mr.Cassius Clay (aka Cashman). The knowledge, love and constant communication provided not only comfort but overwhelming reassurance and support during an extremely unfortunate and frightening time.
    If your search is for nothing but the most knowledgeable and best care for your fur baby, Capital is the answer!!! Thank you for your amazing care, generosity and love!"
    -Cash and Melissa M.

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24 hours


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