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Meet Our Vets

Meet the Veterinarians & Team of Greenway Animal Clinic in Houston. We’re pleased to provide exceptional vet care for your pets!

Dr. Mark Van Ness

Owner/ Veterinarian

Dr. Mark Van Ness is a third generation Houstonian and fifth generation Texan. He graduated from Texas A&M College of Veterinary Medicine in 1979. Dr. Van Ness has a large four-legged family of 4 dogs and 2 cats. When the weather is nice, he enjoys spending time doing almost anything outdoors.

Dr. Kristen Olson

Associate Veterinarian

Dr. Kristen Olson earned her Bachelor of Science from Texas A&M University in 1996, and her Doctor of Veterinary Medicine from Texas A&M College of Veterinary Medicine in 2000. She began working at Greenway shortly after graduation from vet school and she really enjoys the wonderful pets and owners that make up Greenway’s clients. Dr. Olson shares her home with her wife, Tabitha, and four spoiled cats, Bubba, Fletcher, Oliver, and Simon.

When she is not working, Dr. Olson can usually be found lifting weights, swimming, biking, or running. She has completed two full Ironman races, four stand-alone marathons and one ultramarathon, and has reached the summits of 8 of Colorado’s 14ers. If she is not working out, Dr. Olson loves reading, traveling, hiking, and relaxing on the beach.

Dr. Rachel Moers

Associate Veterinarian

Dr. Moers earned her Bachelor of Arts in Biology from the University of Houston in 2001, and her Doctor of Veterinary Medicine from Texas A&M College of Veterinary Medicine in 2008. She grew up in Southwest Houston and lives with her husband, Joey, their son, Jayden, their dog, Lola, and their cats Scary Tom, Peggy Sue, and Little Mittens.

Meet Our Team

Kimberly Box

Hospital Manager

Eresma Quijano


Joana Castelan


Mark Porter


Marisol Corpus


Maria Aguinaga


Patricia Sullivan


Christopher Buckner

Kennel Attendant

Banesa Bustamante

Vet Tech Assistant

Hypathia (Patty) Gallegos

Kennel Attendant

Elpidio (Pio) Espindola

Kennel Attendant

Nena Berumen