John Peter Gruen, MD

Title(s)Clinical Associate Professor of Neurological Surgery (Part-Time)
SchoolKeck School of Medicine of Usc
AddressGNH 3300
Off Campus
Los Angeles CA 90089-9314
Phone+1 323 409 7422
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    Dr. John Peter Gruen, a highly esteemed Professor of Medicine at the University of Southern California (USC), stands at the forefront of neurosurgery with a particular focus on neurotrauma. He brings a remarkable blend of experience, skill, and dedication to his role, reflected in his substantial contributions to both clinical practice and academic medicine.

    Dr. Gruen's academic journey is marked by an impressive educational background, holding degrees from Yale College (BA in History), Columbia University (MD in Medicine), and having completed extensive research and fellowships in neuroscience and nerve surgery at prestigious institutions including the University of Southern California and Gunzberg Hospital in Germany.

    In his illustrious career, Dr. Gruen has held several key positions, including Associate Medical Director of Critical Care at the Los Angeles General Medical Center (LAGMC), Medical Director of Utilization Review at LAGMC, and Associate Clinical Professor of Neurosurgery at Keck USC School of Medicine. His expertise in neurosurgical care, especially in treating traumatic brain injuries (TBI), is widely recognized.

    Dr. Gruen's dedication to community health is evident in his establishment of the LAC+USC Brain Injury Clinic, which addresses the long-term sequelae of TBI and expanded to include care for COVID-19 long-haul patients. His commitment to educating and supporting those suffering from chronic conditions underlines his holistic approach to patient care.

    As a clinician, educator, and researcher, Dr. Gruen has made significant contributions to the field, including involvement in interventional clinical trials for TBI and publishing in renowned journals. His work in underserved hospitals highlights his dedication to improving outcomes in challenging healthcare environments.

    Dr. Gruen's unwavering commitment to neurosurgical innovation and patient-centered care makes him an invaluable asset to the USC Neurosurgery team.

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. No More 'Code Black': Intervention to Improve Inpatient Flow at a Large Public Hospital. Am J Med. 2018 04; 131(4):371-376. Coffey CE, Carter V, Wei E, Hutcheon D, Gruen JP, Anonas-Ternate A, Sandoval R, Marquez A, Sarff L, Spellberg B. PMID: 29175310.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    2. Safety-net versus private hospital setting for brain metastasis patients treated with radiosurgery alone: Disparities in follow-up care and outcomes. Cancer. 2018 Jan 01; 124(1):167-175. Diao K, Sun Y, Yoo SK, Yu C, Ye JC, Trakul N, Jennelle RL, Kim PE, Zada G, Gruen JP, Chang EL. PMID: 28902402; PMCID: PMC7469980.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    3. Decreased mortality in patients with isolated severe blunt traumatic brain injury receiving higher plasma to packed red blood cells transfusion ratios. Injury. 2018 Jan; 49(1):62-66. Haltmeier T, Benjamin E, Gruen JP, Shulman IA, Lam L, Inaba K, Demetriades D. PMID: 28807428.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    4. Introduction: Adult hydrocephalus. Neurosurg Focus. 2016 Sep; 41(3):E1. Hamilton M, Gruen JP, Luciano MG. PMID: 27581305.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    5. Compliance With Evidence-Based Guidelines and Interhospital Variation in Mortality for Patients With Severe Traumatic Brain Injury. JAMA Surg. 2015 Oct; 150(10):965-72. Dawes AJ, Sacks GD, Cryer HG, Gruen JP, Preston C, Gorospe D, Cohen M, McArthur DL, Russell MM, Maggard-Gibbons M, Ko CY, Los Angeles County Trauma Consortium. PMID: 26200744.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    6. Intracranial pressure monitoring and inpatient mortality in severe traumatic brain injury: A propensity score-matched analysis. J Trauma Acute Care Surg. 2015 Mar; 78(3):492-501; discussion 501-2. Dawes AJ, Sacks GD, Cryer HG, Gruen JP, Preston C, Gorospe D, Cohen M, McArthur DL, Russell MM, Maggard-Gibbons M, Ko CY, Los Angeles County Trauma Consortium. PMID: 25710418.
      View in: PubMed   Mentions: 20     Fields:    Translation:Humans
    7. Decompressive craniectomy: surgical control of traumatic intracranial hypertension may improve outcome. Injury. 2010 Sep; 41(9):894-8. Eberle BM, Schnüriger B, Inaba K, Gruen JP, Demetriades D, Belzberg H. PMID: 21574279.
      View in: PubMed   Mentions: 23     Fields:    Translation:Humans
    8. Infrared thermal imaging: a review of the literature and case report. Neuroimage. 2009 Aug; 47 Suppl 2:T154-62. Kateb B, Yamamoto V, Yu C, Grundfest W, Gruen JP. PMID: 19332140.
      View in: PubMed   Mentions: 27     Fields:    Translation:Humans
    9. Hemodynamic and oxygen transport patterns after head trauma and brain death: implications for management of the organ donor. J Trauma. 2007 Nov; 63(5):1032-42. Belzberg H, Shoemaker WC, Wo CC, Nicholls TP, Dang AB, Zelman V, Gruen JP, Berne TV, Demetriades D. PMID: 17993948.
      View in: PubMed   Mentions: 11     Fields:    Translation:Humans
    10. Survival, hemodynamics, and tissue oxygenation after head trauma. J Am Coll Surg. 2006 Jan; 202(1):120-30. Nicholls TP, Shoemaker WC, Wo CC, Gruen JP, Amar A, Dang AB. PMID: 16377505.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    11. Minimally invasive lateral mass screws in the treatment of cervical facet dislocations: technical note. Neurosurgery. 2003 Feb; 52(2):444-7; discussion 447-8. Wang MY, Prusmack CJ, Green BA, Gruen JP, Levi AD. PMID: 12535377.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    12. Brachial plexus catheter reservoir for the treatment of upper-extremity cancer pain: technical case report. Neurosurgery. 2000 Apr; 46(4):1009-12. Wang MY, Teitelbaum GP, Loskota WJ, Eng D, Albuquerque F, Gruen JP. PMID: 10764282.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    13. Resection and graft repair for localized hypertrophic neuropathy. Neurosurgery. 1998 Jul; 43(1):78-83. Gruen JP, Mitchell W, Kline DG. PMID: 9657192.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    14. Continuous use of standard process audit filters has limited value in an established trauma system. J Trauma. 1996 Sep; 41(3):389-94; discussion 394-5. Cryer HG, Hiatt JR, Fleming AW, Gruen JP, Sterling J. PMID: 8810954.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    15. Management of complicated neurologic injuries. Surg Clin North Am. 1996 Aug; 76(4):905-22. Gruen JP, Weiss M. PMID: 8782480.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    16. Evaluation and management of spondylolysis and spondylolisthesis. Clin Neurosurg. 1993; 40:384-415. Stillerman CB, Schneider JH, Gruen JP. PMID: 8111991.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
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