Our Veterinarians

For over 25 years, the veterinarians of Alliance Animal Health Center and Animal Hospital of Park Glen have provided care for cats and dogs in the north Fort Worth area. Our veterinarians are dedicated to the health and well being of the pets in our community, and regularly take advantage of continuing education opportunities to ensure they remain knowledgeable and skilled in the latest developments in veterinary medicine.


From left: Dr. Mark O'Gorman, Dr. Bob Arend, Dr. Rob Reigle, Dr. Brian Loveless and Dr. Clint Brashear

Dr. Mark O’Gorman graduated with honors from Texas A&M College of Veterinary Medicine in 1985. He founded his first veterinary practice in 1987 after spending 1 ½ years as an associate in a mixed animal practice in Ponder, Texas. Dr. O’Gorman lives in Keller with his wife of over 25 years, Elaine, and their five children.

Dr. Bob Arend became a partner at the practice in 1989 after working 3 years as an associate in two separate small animal practices – the first in Galveston, and the second in Amarillo, Texas. He also spent a year working at a small animal emergency clinic in Lubbock and doing veterinary relief work for hospitals. Dr. Arend lives in Hurst with his wife of over 20 years, Aida.

Dr. Rob Reigle joined the veterinary staff of Animal Hospital of Park Glen in 1996. He became a partner at the practice in 2001. After completing undergraduate studies at Texas Christian University, Dr. Reigle returned to his home state to attend veterinary school at the University of Illinois, where he was awarded the Doctorate Degree in Veterinary Medicine. Dr. Reigle lives in North Richland Hills with his wife, Jennifer, and their two daughters.

Dr Brian Loveless did his undergraduate work in Animal Science at Oklahoma State University where he also completed his education earning a Doctorate Degree in Veterinary Medicine. He joined the veterinary staff of Alliance Animal Health Center and Animal Hospital of Park Glen in the summer of 2007. Dr Loveless lives in Fort Worth with his wife, Lacey, who also practices veterinary medicine in Fort Worth.

Dr. Clint Brashear joined the veterinary staff of our hospitals in 2011. A native of Louisiana, Dr. Brashear received his undergraduate degree from Louisiana Tech University in 1998 and his Doctor of Veterinary Medicine from Louisiana State University in 2001. He and his wife, who is also a veterinarian, moved to the Dallas Fort Worth area over 5 years ago.

Educated, skilled, compassionate care is the mantra of our team of veterinary professionals.