​Having completed a post graduate course in Sports Chiropractic, Dr. Gretchen enjoys working with athletes and sports enthusiasts of all ages. Other focuses include personal injury cases, repetitive stress injuries, women's health issues and canine chiropractic. Her passions include dogs, hiking, music and being a sports fan.

Dr. Gretchen has been with TWC since 1993. Originally from the Seattle area, she grew up surrounded by sports (her father was an athlete, coach, and referee), as well as being involved in competitive gymnastics. Experience with her own injuries and her fascination with the human body led her to become a high school football trainer, a physical therapy volunteer, and finally an assistant in a chiropractic office. With her direction set, Dr. Gretchen became a third generation "Husky" and graduated from the University of Washington with a Bachelor of Science degree in Zoology.
While attending Palmer College of Chiropractic in California, she met Dr. Alicia, and became part of the Andreis family by marrying her brother.