About Our Team

Ashleigh A. Byrne, MD

Dr. Byrne’s passion for pain medicine began early in her medical career, during a transformative summer working alongside a pediatric anesthesiologist named Ana-Lucia in Guatemala. Ana-Lucia’s compassion and dedication to relieving children’s pain left a lasting impression, revealing the profound impact that effective pain management can have on quality of life. Inspired by this experience, Dr. Byrne chose to focus her medical training and career on pain medicine.

Pain management is a dynamic and rapidly evolving specialty. With advances in technology such as spinal cord stimulation and the development of innovative medications, new possibilities for patient care continue to emerge. Despite this progress, pain is still often overlooked in traditional medical practice. Dr. Byrne is committed to addressing this gap through comprehensive, empathetic, and evidence-based care.

She believes in crafting personalized treatment plans that go beyond simply reducing pain—plans that restore function, support independence, and improve overall well-being. Her multidisciplinary approach may include targeted procedures, responsible medication management, and physical therapy, all tailored to meet the unique needs of each patient.

Outside the clinic, Dr. Byrne is a proud mom of three incredible kids and the owner of four energetic dogs. She is an amateur chef and loves experimenting in the kitchen, especially when cooking for her family. She’s also a passionate skier and a committed fitness enthusiast. Whether on the slopes or spending time at home, she finds that staying active and connected helps her maintain the balance and perspective essential to delivering exceptional care.

---

Craig W. Davis, MD

Dr. Davis’ practice is centered on spine and pain conditions, both acute and chronic, with a focus on restoration of activity, improvement of quality of life, and improvement in activities of daily living. This is accomplished through an evidence-based multi-modal approach utilizing non-surgical, minimally-invasive procedures, physical therapy, biofeedback, non-opiate pharmacology, and a minimalistic approach to opioid medications.

Dr. Davis is the current president for the Utah Chapter of the American Society of Interventional Pain Physicians and the current vice-president for the Utah Chapter of the American Academy of Pain Medicine.

---

Collin McDonald, PA-C

Collin graduated with a Bachelor of Arts degree in Psychology from the University of Utah in 2007. He went on to further his education and earned a Master of Medical Science degree from the Emory School of Medicine in Atlanta, Georgia in 2010. Prior to his training as a Physician Assistant (PA), Collin worked as an Emergency Medical Technician (EMT) in an Emergency Department which cultivated his love of medicine and serving his community. While in the PA program, Collin was the recipient of the PA Heritage Award, an award given to students who “embody the traditions and characteristics of a caring PA”. He carries this attitude into his daily practice and has a strong desire to work with patients to improve their overall health.

Collin now specializes in pain management and considers it a privilege to join Granger Pain & Spine, where our mission is to treat each individual with care and respect as we partner with them to improve their chronic pain. Collin is invested in this mission as he strongly believes the best way forward is together, while using his skills and knowledge to effectively care for the needs of his patients.

Outside of work, Collin enjoys taking advantage of Utah’s beautiful mountains in every season. He also enjoys boxing, running, and cheering on his children during their soccer games and cheer competitions.