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Meet Our Vets


Richard Gregory

Owner & Senior Veterinarian (BVSc)

Richard joined Mullum Vet in January 2006 and became a partner in 2009. He graduated from Sydney Uni in 1994. He has considerable experience in all aspects of veterinary practice, both small and large animals.

You can find Richard in the clinic on Tuesdays, Wednesday and Fridays.


Bec Willis

Owner & Veterinarian (B.ExSc, B.VetBiol/B.VSc)

Bec graduated from Charles Sturt Uni in Wagga in 2011 with a Bachelor of Veterinary Science/ Veterinary Biology. Her vet career began in Dalby, a mixed animal practice on the Darling Downs, Queensland.

You can find Bec in the clinic on Mondays, Tuesdays and Thursdays. 


Mark Sebastian

Veterinarian (BSc DVM(Hons))

Mark's greatest passion has always been animals. He grew up in the Channon then moved to Melbourne for high school and university, earning his Bachelor of Science and Doctorate of Veterinary Medicine at the University of Melbourne.

You can find Mark in the clinic on Mondays, Wednesdays, Thursdays and Fridays. 


Sinden Nelson

Veterinarian (BVSc(Hons))

Sinden grew up locally and always had a passion for animals. She went to the University of Queensland where she completed her Bachelor of Veterinary Science in 2014. Sinden then went on to work in Lismore for a few years after graduating before moving to New Zealand where she continued to work as a vet for 5 years and starting a family. Sinden moved back to the Northern Rivers in 2021. 

Sinden loves the variety that working in a mixed practice offers and has a keen interest in all things surgery! 

Sinden also has a love and is expereinced with horses, having had them herself for many years. 

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