Dr. Lennarson is on Doximity
As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.
- Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
- Connect with colleagues in the same hospital or clinic.
- Read the latest clinical news, personalized to your specialty.
Office
2045 N Franklin St
Denver, CO 80205Phone+1 303-338-4545
Education & Training
University of Iowa Hospitals and ClinicsResidency, Neurological Surgery, 1995 - 2001
University of Wisconsin School of Medicine & Public HealthClass of 1995
Certifications & Licensure
CO State Medical License 2013 - 2025
IA State Medical License 1995 - 2013
OH State Medical License 2001 - 2006
American Board of Neurological Surgery Neurological Surgery
Publications & Presentations
PubMed
- Revisiting a Rare Anomaly Described 25 Years Ago in the AJNR: A Journey from Pediatric Hemifacial Microsomia and Middle Cranial Fossa Aplasia to CSF-Lymphatic Fistula ...Andrew L Callen, Ashoke R Khanwalkar, Michael L Cunningham, Samantha L Pisani Petrucci, Debayan Bhaumik
AJNR. American Journal of Neuroradiology. 2025-03-27 - Enhancing Clarity in Dynamic Myelography Reporting: Results of a Survey of Patients and Referring Providers Evaluating a Standardized Reporting System in the Myelograp...Andrew L Callen, Samantha L Pisani Petrucci, Debayan Bhaumik, Peter Lennarson, Marius Birlea
AJNR. American Journal of Neuroradiology. 2025-03-26 - Efficacy of Traditional Epidural Patching versus Patching within Spinal Longitudinal Extradural Collections for Ventral Dural Cerebrospinal Fluid Leaks.Andrew L Callen, Samantha L Pisani Petrucci, Peter Lennarson, Mark F Sedrak, Adriana Gutierrez
Radiology. 2025-03-01
Press Mentions
‘Low Tech’ Innovation Device for Dynamic CT Myelography Improves Care for CSF Leak PatientsFebruary 15th, 2024
Viewing the full profile is available to verified healthcare professionals only.
Find your profile and take control of your online presence:
