Callahan Clinic Providers
Meet Our Providers
Thomas Callahan, M.D. Doctor of Medicine
Dr. Thomas Callahan has been a part of the St. George medical community since 1980. He graduated from Brigham Young University in 1971 with his bachelor degree and then began his medical studies at the University of Utah where he graduated in 1975. He became Board Certified in Family Medicine after completing a three year residency at St. Josephs Hospital in Phoenix, AZ. He came back home in 1980 and opened his own practice.
Dr. Callahan enjoys caring for patients of all ages and the relationships he has built over the past 35 years. Dr. Callahan enjoys being on the lake, on the golf course, and spending time with his wife and seven kids and 27 grand kids.
Douglas Callahan, M.D. Doctor of Medicine
Dr. Doug Callahan is a native of St. George and has been a major part of the Callahan Clinic since 2003. He graduated from Des Moines University School of Osteopathic Medicine in 2000 and became Board Certified in Family Medicine after completing a three year residency at St. Josephs Hospital in Phoenix, AZ. Dr. Callahan enjoys caring for patients of all ages. Dr. Callahan enjoys spending time with his wife and three kids as well as golf, tennis, and water sports.
Thomas Colburn “Colby” Callahan, DO Doctor of Medicine
Dr. Thomas “Colby” Callahan was born and raised in St. George. After receiving his undergraduate degree from Southern Utah University, Dr. Colby continued his education at Edward Via College of Osteopathic Medicine graduating in 2013. He followed in the footsteps of his father and brother by completing a three-year Family Medicine Residency at St. Joseph’s Hospital in Phoenix, Arizona. Dr. Colby specializes in Family Medicine and is board-certified with the American Board of Family Medicine.
Dr. Colby loves being a physician and enjoys taking care of the whole family; including pediatrics, adolescents and women’s and men’s health.
Dr. Colby is committed to helping his patients achieve optimal health and maximize their quality of life. He strives to offer compassionate care along with proactively working with each patient in preventive health measures.
In his free time, Dr. Colby enjoys woodworking, boating and college football. Above all else, Dr. Colby loves spending time with his wife and four children. Dr. Colby served a two-year LDS mission in Paraguay and speaks fluent Spanish.
Amanda Turner, MSN, FNP-BC Master of Science in Nursing, Board Certified Family Nurse Practitioner
Amanda is a Board Certified Nurse Practitioner credentialed by the American Nurses Credentialing Center. She graduated in 2009 with her Masters of Science degree from the University of Utah, graduating with honors. Amanda received her undergraduate degree through Southern Utah University. She has a strong medical background. She began working as a CNA at age 18. Early in her career she worked in acute nursing services, geriatric care, women’s health, and psychiatric nursing.
Amanda believes patient care involves a comprehensive approach, with focus on mental and emotional care equally to physical care. She focuses on disease prevention and strives to emphasize the benefits that healthy choices and an active lifestyle have in optimizing overall health. She actively listens and educates her patients and families to help them achieve their healthcare goals.
In her free time, Amanda enjoys spending time with her husband and two boys, being outside, helping with the horses, and watching sporting events, especially baseball.
Alana Bradbury, FNP-C Board Certified Family Nurse Practitioner
Alana Bradbury, FNP-C, graduated from Dixie State University with a Bachelor’s of Science in Nursing. She continued her education at Chamberlain University where she earned a Master’s Degree in Nursing, graduating in October of 2020. She is currently a board certified family nurse practitioner with the American Academy of Nurse Practitioners.
Alana decided on a career in healthcare because of her love of science and desire to help and connect with others.
She has extensive work experience in trauma/critical care, surgical nursing, sleep medicine, administration, and family medicine. Alana joined the Callahan Clinic in February of 2022 and appreciates the collaborative, patient-oriented culture the Callahans have fostered in their clinic. Alana was raised in Massachusetts and moved to St. George over 30 years ago. Consistent with her New England roots, she is a devout Red Sox, Celtics, and Patriots fan. When not at work, Alana enjoys playing a variety of sports including golf and basketball, hiking, baking and spending time with her husband and children.
Hear From Our Patients
Dr Colby is the best. He listens, thinks, explains and solves. The whole staff is wonderful. Thank you 🙏🏽. You fixed this old man again.
Paul W.
I love the staff at Callahan Clinic. They are very friendly and get you taken care of right away. Alana Bradbury is an amazing healthcare provider who actually listens to you. She takes the time to address any issues I have. I would highly recommend her!
Stacey R.
I'm new to St George area and clinic. Always have good experience and friendly staff and availability for appointments has been easy and flexible
BreAnne D.
Callahan Clinic is a family owned clinic who cares about their patients, and their well-being, as much as they do for their own family! Thank you Callahan clinic for taking such great care of my family over the years. Your highly recommended in my book.
Debra H.
I’m a new patient of Alana Bradbury. She’s great! My boyfriend and I were impressed by how quick and easy it was to get established, have my blood drawn, and be on our way. The staff is very friendly and the environment was clean and professional. I’m so glad I found the Callahan Clinic! ❤️
Crank
Dr. Callahan will always be my primary doctor. Fast to get you in when sick, always friendly, and the girls up front are comforting and welcoming. Katherine is my favorite M.A. and answers all my questions with urgency. I love my doctors office and highly recommend anyone seeking a new doctor in town. Thank you for being there for me when I'm not feeling too good.
FaNtAsTicAL
Alanah Bradbury is my primary care provider and I couldn't be happier. She takes the time to listen and understands medicine and how to treat a patient so much better than most of the doctors I see.
