Aaron J. Gustin, DO

Dr. Aaron Gustin is a fellowship-trained cerebrovascular and endovascular neurosurgeon based in Billings, Montana. With a comprehensive approach to neurological care, Dr. Gustin brings both technical expertise and deep compassion to every case—from the most routine to the most complex—recognizing that each one has the potential to significantly impact a patient’s quality of life.

Dr. Gustin’s philosophy of care is rooted in empathy, active listening, and a deep commitment to treating every patient as he would a member of his own family. He believes that excellent outcomes are driven not only by surgical skill but by clear communication, patient education, and trust. In the face of often urgent or life-altering neurological conditions, he strives to create a sense of calm, clarity, and confidence for patients and their loved ones.

His clinical interests span a wide range of complex neurosurgical conditions, including:

• Cerebrovascular and endovascular neurosurgery
• Brain and spinal aneurysms
• Arteriovenous malformations (AVMs)
• Dural arteriovenous fistulas & carotid-cavernous fistulas
• Cavernous malformations
• Microvascular decompression for trigeminal and glossopharyngeal neuralgia, and hemifacial spasm
• Cerebral bypass surgery for Moyamoya disease
• Carotid endarterectomy and carotid stenting
• Stroke thrombectomy
• Middle meningeal artery embolization for chronic subdural hematoma
• Venous sinus stenosis and stenting
• Tumor embolization & embolization for epistaxis
• Cerebral and spinal tumors
• Traumatic and degenerative spinal disorders
• Carpal and cubital tunnel syndromes

Outside the operating room, Dr. Gustin is a devoted husband and father who enjoys spending time with his wife and their five children. He’s also an avid sports fan and enjoys both watching and playing whenever time allows.