Meet Our Doctors


Dr. Melanie Prewett

Dr. Prewett is a 2003 graduate of Oklahoma State University school of veterinary medicine and a 1999 summa cum laude graduate of Wilkes University. Dr. Prewett joined the practice in 2003.


Dr. Michael Prewett

Dr. Prewett is a 2001 graduate of Oklahoma State University School of Veterinary Medicine and a 1997 Animal Science graduate of Oklahoma State University. He joined the practice in 2006.


Dr. Abigail Hanna

Dr. Abigail Hanna joined our Fort Smith clinic in 2022. Dr. Hanna graduated from Carl Albert State College in 2017 with her Associate of Science and then from Oklahoma State University of Veterinary Medicine in 2022. Dr. Hanna is joined in her home by her two dogs (Ava and Asher), a bearded dragon (Artemis) and a ball python (Aggie). In her free time, you can find Dr. Hanna relaxing by the pool or at the lake with her family.


Dr. Lori Hardin

Dr. Hardin is a 1994 graduate of Oklahoma State University School of veterinary medicine and a 1985 graduate of Southern Methodist University. Dr. Hardin has been practicing with us at Massard Creek Animal Hospital since 2003.


Massard Creek Animal Hospital Staff



Natalie Sterling, Receptionist

Natalie has been employed as a receptionist at our office since 2001. She and her husband Jake have two beautiful daughters, Emma and Ava. She is also the proud pet parent of two cats, Miller and Maverick.


Madhi Porter, Practice Manager

Madhi joined the team at Massard Creek Animal Hospital in 2008 after relocating here from her home state of Georgia. She started her veterinary employment in 2005. She and her husband Porter have one son, Banks. She is also the pet parent to a rambunctious Boxer, Katy, and two cats, Mitzi and Kitty.


Ashleigh Cox, Licensed Veterinary Technician

Ashleigh originally grew up in Bokoshe, OK and attended Pocola High School. She joined our team in 2020 after completing her Associate in Applied Science at Murray State College. Ashleigh loves being outdoors and enjoys spending her time horseback riding, kayaking and hiking. She is joined in her home by her Mini-Aussie/Corgi Mix, Annabeth.


Megan Simmons, Veterinary Assistant

Originally relocating to Arkansas from California in 2011, Megan joined our clinic in Fort Smith in 2018. Megan has several certificates of education, including ones pertaining to the veterinary field, medical field and forensic science. Megan is joined in her home by her husband, Ben, her 2 dogs and 5 cats. In her free time, Megan enjoys kickboxing, playing her flute and her clarinet. Fun fact: Megan and Ben LOVE Star Trek and live by the motto of ‘Live long and prosper’.


Salarah Logan, Veterinary Assistant

Salarah joined our clinic in 2023 after obtaining her Veterinary Assistant Certificate from Petra College. Fun Fact: Salarah earned her certificate from Petra while being trained under Briana!


Briana Carrillo, Veterinary Assistant

Briana joined the team at Massard Creek Animal Hospital in 2015 after finding a passion for working with animals at her previous clinic. She enjoys expanding her growing knowledge by also working as an Emergency Medicine Assistant at the Fort Smith Animal Emergency Clinic. Brian is the proud Mom to two children, two dogs, and a bunny.


Dawson Smith, Veterinary Assistant

Dawson joined our clinic team in 2023 after graduating from Muldrow High School. He has previous Veterinary experience and is attending UAFS with hopes to pursue his degree in Veterinary Medicine. Fun Fact: Dawson is the caretaker for a bevy of animals including 3 Kangaroos, 2 Wallaby, a Bobcat, a South American Raccoon, 3 Lemurs (all exotics are rescue animals), cattle, horses, dogs and many cats.


Sallisaw Animal Hospital Staff



Arionna Murphy, Veterinary Assistant

Originally from Burley, Idaho, Arionna relocated with her family to Sallisaw, OK and joined the team at Massard Creek Animal Hospital in 2020. Arionna is an avid horseman and in her free time enjoys barrel racing and breakaway roping. She is joined in her home by a bevy of pets including Lovey (English Bulldog), Bailey and Tax (Labs), Mr. T (cat), Coyote (Quarter Horse), and over 20 goats.


Davona Gonzalez, Veterinary Assistant

Davona has been with us since 2017 when she moved to the area from Idaho. She has worked in several veterinary practices and brings her knowledge and compassion to our Fort Smith and Sallisaw offices.


Chasity Soap, Veterinary Assistant/Receptionist


Chasity joined our team in 2017, working first at Massard Creek Animal Hospital and now at Sallisaw Animal Hospital. She and her husband Garret are blessed with one daughter and multiple fur babies.


Caleb Helsley

Caleb is a native of Cookson, OK and joined our team at SAH in 2022. Caleb graduated from Southwestern College with a Bachelors of Science and has been accepted to Oklahoma State University School of Veterinary Medicine to work towards his Doctor of Veterinary Medicine degree. Caleb enjoys watching all sporting events and spending time outdoors with friends and family. He is joined in his home with his German Shepherd, Leo.