Simon S Lo MD FACR, FASTRO

Central Nervous System Cancer, Gastrointestinal Cancer, Thoracic Cancer

Professor of Radiation Oncology and Neurological Surgery, Vice Chair for Strategic Planning, Department of Radiation Oncology, University of Washington School of Medicine, Seattle

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1959 NE Pacific StSeattle, WA 98195
Phone+1 206-598-4100

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Education & Training

University of MinnesotaResidency, Radiation Oncology, 1997 - 2001
Mayo Clinic College of Medicine and Science (Rochester)Fellowship, Radiation Oncology, 2000 - 2000
Queen Elizabeth HospitalResidency (FRCR curriculum), Clinical Oncology (Radiotherapy and Oncology)- FRCR curriculum, 1993 - 1997
KWHResidency (FRCS curriculum), Orthopaedics and Traumatology, 1992 - 1993
Prince of Wales HospitalInternship, 1991 - 1992

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Certifications & Licensure

MI State Medical License 2001 - 2029
OH State Medical License 2006 - 2028
IN State Medical License 2003 - 2027
MN State Medical License 1999 - 2027
WA State Medical License 2016 - 2027
IL State Medical License 2002 - 2017
American Board of Radiology Radiation Oncology

Awards, Honors, & Recognition

FASTRO ASTRO, 2017
Best Doctors Best Doctors, Inc., 2015
FACR American College of Radiology, 2014

Clinical Trials

Avoiding the Hippocampus During Whole-Brain Radiation Therapy in Treating Patients With Brain Metastases Start of enrollment: 2011 Mar 01
Completed
Phase 2
Whole-Brain Radiation Therapy or Stereotactic Radiosurgery With or Without Lapatinib Ditosylate in Treating Patients With Brain Metastasis From HER2-Positive Breast Cancer Start of enrollment: 2012 Dec 06
Completed
Phase 2

Publications & Presentations

PubMed

Defining the Role of SABR in Head and Neck Cancer: Results From a Multi-institutional Delphi Consensus.
Claire Petit, Jack Phan, Sweet Ping Ng, Edith Filion, Nancy Lee
International Journal of Radiation Oncology, Biology, Physics. 2026-05-22
Stereotactic Body Radiation Therapy for Locally Advanced Pancreatic Adenocarcinoma: A Systematic Review and Meta-Analysis of Prospective Trials.
K Liang Zeng, Alexander V Louie, Rupesh Kotecha, Arjun Sahgal, Zhenwei Zhang
Practical Radiation Oncology. 2026-05-06
International Radiosurgery Oncology Consortium of the Kidney (IROCK) Contouring Guidelines for Renal Cell Carcinoma Treated With Stereotactic Ablative Radiation Therapy.
Aneesh Dhar, Shankar Siva, Vivian S Tan, Anand Mahadevan, Anna Bruynzeel
International Journal of Radiation Oncology, Biology, Physics. 2026-05-01

Journal Articles

Multi-Institutional Analysis of Prognostic Factors and Outcomes After Hypofractionated Stereotactic Radiotherapy to the Resection Cavity in Patients with Brain Metastases
Simon S Lo, Wenyin Shi, Kristin J Redmond, Mitchell Machtay, JAMA Oncology
The Promise of Stereotactic Body Radiotherapy—Next Phase of Integration into Oncological Practice
Simon Lo, MD, Annals of Palliative Medicine

Authored Content

ACR 2021 in BriefMay 2021
Perspectives from Council of Affiliated Regional Radiation Oncology SocietiesJune 2019
Patient Preference for Stereotactic Radiosurgery plus or Minus Whole Brain Radiotherapy for the Treatment of Brain MetastasesJune 2017