FEATURED CLINICIANS
Meet the Featured Clinicians
The clinicians featured on this website are employed by CU Medicine and provide care through their respective clinical locations and institutional affiliations. This independently maintained website provides information about their backgrounds and care locations; it is not an official CU Medicine website.
Neurosurgeons

Chih-Ta Lin, MD, FAANS
Board-Certified Neurosurgeon
Chih-Ta Lin, MD, FAANS, is a board-certified neurosurgeon employed by CU Medicine and a Visiting Associate Professor of Clinical Practice in the Department of Neurosurgery at the University of Colorado School of Medicine. Before joining CU Medicine, he held academic appointments at Indiana University and Case Western Reserve University and practiced neurosurgery in Lafayette, Colorado. His clinical interests include brain tumors, traumatic brain and spinal injuries, degenerative spine disorders, and complex spinal deformity. At UCHealth Longs Peak Hospital, Dr. Lin has helped establish cranial surgical services and expand access to specialized brain and spine care for patients from Boulder County and the northern Denver metropolitan area.
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Peter Lennarson, MD, FAANS
Board-Certified Neurosurgeon
Peter Lennarson, MD, FAANS, is a board-certified neurosurgeon and Associate Professor of Clinical Practice in the Department of Neurosurgery at the University of Colorado School of Medicine. With more than two decades of neurosurgical experience, his practice focuses on complex spinal disorders, minimally invasive and reconstructive spine surgery, and spinal cerebrospinal fluid (CSF) leaks. He holds leadership roles in the university's CSF Leak Program and neurosurgical spine fellowship and provides care to patients in Longmont and surrounding communities.
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Advanced Practice Providers

Nancy L. Lennarson, MS, RN, AGACNP-BC
Board-Certified Adult-Gerontology Acute Care Nurse Practitioner
Nancy L. Lennarson, MS, RN, AGACNP-BC, is a board-certified adult-gerontology acute care nurse practitioner employed by CU Medicine. Her clinical background spans neurosurgery, orthopedic spine care, critical care, and surgical nursing. She brings extensive experience caring for patients with complex medical and surgical needs, with an emphasis on clear communication, patient education, and collaborative, individualized care.
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Terri Baker, PA-C
Certified Physician Assistant
Terri Baker, PA-C, is a certified physician assistant and Instructor in the Department of Neurosurgery at the University of Colorado School of Medicine. She has worked in neurosurgery since 2012, with a clinical focus on spine disorders, surgical care, and spinal cerebrospinal fluid (CSF) leaks. Her experience includes patient evaluation, surgical first assistance, postoperative care, and coordination of complex multidisciplinary treatment.
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