Meet Our Doctors

John Pazora, DVM

Dr. Pazora grew up in Sanger, Texas. After attending and graduating from Texas Tech University in 1997, Dr. Pazora was accepted into the College of Veterinary Medicine at Texas A&M.  He graduated from Texas A&M in 2002 and moved to McKinney to practice as an associate veterinarian. Since 2002, Dr. Pazora has practiced in the McKinney/Frisco area.  Having the dream of one day opening his own practice, Dr. Pazora created the Animal Hospital of Melissa and we opened our doors in September of 2007.

Dr. Pazora's professional interests include internal medicine and dermatological disorders.  He is a member of the American Veterinary Medical Association and Texas Veterinary Medical Association.  

Dr. Pazora is married to his wife Brandy and they are proud parents of two daughters Alexa and Alina.  At home they have a lab named Tyson and a cat named Kato who have been adopted along the way. Outside of the office, Dr. Pazora enjoys sailing on Lake Texoma and bike riding.

Stefani Day, DVM

Dr. Day was born in Connecticut, but spent most of her life in Corpus Christi Texas.  In May of 1999 she earned a B.S. in Animal Science from Texas A&M University and later earned her D.V.M. from the College of Veterinary Medicine at Texas A&M.   Dr. Day completed an equine internship in Goldsby, OK after graduating.   She has practiced in the Allen/Melissa area for the last 6 years. Dr. Day joined our practice in August of 2010. 

Dr. Day has special interests in surgery, endocrinology, emergency medicine, and client education. 

At home, Dr. Day is married to her husband Travis whom she met on her internship.  They have been married since 2005 and have two children; a girl and a boy.  Their extended family includes  3 horses, 3 dogs, and 3 cats.

Jill Langston, DVM

Dr. Jill Langston grew up in sky-high Denver, CO. She stayed within her home state for her education, receiving both her undergraduate and Doctor of Veterinary Medicine degree from Colorado State University.

Until recently, she resided in Rochester, NY until a change in job for her husband brought her to Dallas, TX, where she has been extremely grateful for the warmer sunshine and significantly less snow.

When she isn't at work, Dr. Langston enjoys traveling and attending other activities with her husband and two children. She is also a proud parent to both a cat and a dog.

Michelle Smith, DVM

Dr. Smith graduated from Oklahoma State University College of Veterinary Medicine in 2009. She also holds a Bachelors of Science degree in Biology from Oklahoma State University. Dr. Smith moved from Oklahoma, where she was born and raised, to Texas in July 2017. Dr. Smith shares her home with 5 rescued pets: a bengal, a tabby, a boxer mix, a lab mix, and a red footed tortoise. 

Dr. Smith was interested in all types of animals at a very yearly age. She worked in veterinary clinics all through high school and college as well as volunteering at the Tulsa and Oklahoma City zoos. She has experience working in both corporate and private medicine. Although she has always loved dogs and cats, her true interest lies in exotic and wildlife medicine. She has worked with a variety of animals ranging from rhinos, lions and elephants to raptors, reptiles, tortoises, pocket pets and wildlife. She spend 6 years doing wildlife rehabilitation with the Tulsa WINGIT organization where she rehabilitated native squirrels, opossums and turtles. 


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Office Hours

Our Regular Schedule


8:00 am - 6:00 pm


8:00 am - 6:00 pm


8:00 am - 6:00 pm


8:00 am - 6:00 pm


8:00 am - 6:00 pm


9:00 am - 1:00 pm By appt.only




Read What Our Clients Say

  • "Thank you to Dr. Pazora and staff for helping our dog. He was very sick and your love, support and care was much appreciated and possibly saved his life. I will continue to recommend your service and kindness to others. You are great!"
    Kathy Kirby