Tim Gregory


Major, Army

Department of Primary Appointment:
School of Medicine
Neurology Core Faculty, Neuro-Oncologist
Location: Madigan Army Medical Center, Tacoma, WA
Research Interests:
Primary Brain Tumors, Cancer Neurology


2010-2013: University of Pittsburgh, BS in Natural Sciences, Pittsburgh, PA
2013-2017: Uniformed Services University of the Health Sciences, MD, Bethesda, MD
2017-2021: Madigan Army Medical Center, Internship and Neurology Residency, Tacoma, WA
2021-2023: MD Anderson Cancer Center, Neuro-Oncology Fellowship, Houston, TX


MAJ Gregory began his army career with an enlistment in the Pennsylvania Army National Guard in 2009 and then concurrently attended his undergraduate studies at University of Pittsburgh. He commissioned to attend USUHS in 2013 and was inspired during his rotations in both neurology and oncology. Graduating in 2017, he proceeded to Madigan Army Medical Center for his neurology residency. Through outstanding mentorship and generous support from Army leadership, he went on to a two-year Neuro-Oncology Fellowship at MD Anderson Cancer in Houston, TX, after which he received orders to return as faculty at Madigan Army Medical Center.

While building up a new brain tumor program at Madigan with a clinical research focus, MAJ Gregory's primary academic interest is medical student and resident education. When off-duty, he enjoys time with family, hiking, and music.

Career Highlights: Positions, Projects, Deployements, Awards and Additional Publications

2023: ASCO Conquer Cancer Merit Award for abstract "Accelerated tumor progression among glioma patients after COVID-19 infection."

2022 & 2023: William James Miller Endowed Fellowship Award funded through the generosity of the Miller family, the Department of Neuro-Oncology, and Dr. Victor Levin

2021: Wergeland Award

2021: AAN Merit of distinction for top neuro-oncology abstract "Adult pilocytic astrocytoma in the molecular era: surveying the prevalence of MAPK dysfunction and overlap with aggressive features."

2019: Gold Humanism Honor Society

2016: Alpha Omega Alpha

Representative Bibliography

Gregory TA, Williford GL, Maronge JM, Alfaro K, Fuller GN, de Groot JF, Puduvalli VK, Ballester LY, Majd NK. An expedited strategy for accurate and timely integrated molecular diagnosis of gliomas. Neuro-Oncology 2023. PMID: 36723868.

Gregory TA, Mastall M, Lin H, Hess KR, Ying Y, Martin-Bejarano Garcia M, Fuller GK, Alfaro KD, Gule-Monroe GK, Huse JT, Khatua S, Rao G, Sandberg DI, Wefel JS, Yeboa DN, Paulino AC, McGovern SL, Zaky W, Mahajan A, Suki D, Weathers S, Harrison RA, de Groot JD, Puduvalli VK, Penas-Prado M, Majd NK. Characterization of recurrence patterns and outcomes of medulloblastoma in adults: The University of Texas MD Anderson Cancer Center experience. Neuro-Oncology Advances 2023. PMID: 37114244.

Gregory TA, Weathers SP. The Microbiome and CNS Tumors. Advances in Oncology 2023.

Gregory TA, Molina PS, Phillips GD, Henson JW. Impact of neurofibromatosis type 1 in an adult community population. Neuro-Oncology Practice 2022. PMID: 35601964.

Robertson IJ, Gregory TA, Waguespack SG, Penas-Prado M, Majd NK. Recent therapeutic advances in pituitary carcinoma. Journal of Immunotherapy and Precision Oncology 2022. PMID: 37214211.

Gregory TA, Chumbley LB, Henson JW, Theeler BJ. Adult pilocytic astrocytoma in the molecular era: a comprehensive review. CNS Oncology 2021. PMID: 33448230.

Gregory TA, Taylor LP. Teaching NeuroImages: Histopathologically Confirmed Intracranial Enchondroma/Low Grade Chondrosarcoma and IDH1-Mutated Diffuse Glioma in Ollier Disease. Neurology 2021. PMID: 34039720.

Lavoie MR, Cohen NC, Gregory TA, Weber PV. Subacute Combined Degeneration: A case of pernicious anemia without hematological manifestations. BMJ Case Reports 2020. PMID: 32209580.

Gregory TA, Jones GN, Loh Y. Hemiencephalitis: A Hyperaemic Presentation of Hashimoto’s Encephalopathy. BMJ Case Reports 2019. PMID: 31753820.

Simon NW, Gregory TA, Wood J, Moghaddam B. Differences in Response Initiation and Behavioral Flexibility Between Adolescent and Adult Rats. Behav Neurosci. 2013. PMID: 23398439.