I completed my undergraduate medical education at Northwestern University, The Feinberg School of Medicine, and my residency training in Emergency Medicine in the Stanford/Kaiser Emergency Medicine Residency Program. I served as a chief resident and, upon completing residency in 2014, started a 1-year fellowship in Academic Emergency Medicine. I also work as an attending physician in the Stanford Emergency Department. My professional interests include medical education and toxicology. I enjoy bringing creativity into my teaching by exploring modern ways to deliver education through social media and responsive learning technologies. As an educator, my goal is to help our students and residents learn efficiently and effectively to become astute clinicians and provide excellent care to our patients.

Clinical Focus

  • Emergency Medicine
  • Medical Education
  • Toxicology

Academic Appointments

Professional Education

  • Board Certification: Emergency Medicine, American Board of Emergency Medicine (2015)
  • Residency:Stanford Hospital and Clinics (2014) CA
  • Medical Education:Northwestern University Feinberg School of Medicine (2011) IL


All Publications

  • Study Looking at End Expiratory Pressure for Altitude Illness Decrease (SLEEP-AID). High altitude medicine & biology Lipman, G. S., Kanaan, N. C., Phillips, C., Pomeranz, D., Cain, P., Fontes, K., Higbee, B., Meyer, C., Shaheen, M., Wentworth, S., Walsh, D. 2015; 16 (2): 154-161


    Lipman, Grant S., Nicholas C. Kanaan, Caleb Phillips, Dave Pomeranz, Patrick Cain, Kristin Fontes, Becky Higbee, Carolyn Meyer, Michael Shaheen, Sean Wentworth, and Diane Walsh. Study Looking at End Expiratory Pressure for Altitude Illness Decrease (SLEEP-AID). High Alt Med Biol 16:154-161, 2015.-Acute mountain sickness (AMS) affects 25%-70% of the tens of millions of high altitude travelers annually, with hypoxia and nocturnal desaturations as major contributing factors. This is the first double blind randomized placebo controlled trial to assess expiratory positive airway pressure (EPAP) for AMS prevention and nocturnal hypoxic events. Healthy adult participants trekking in the Khumbu region of the Himalayas were randomized to a single-use EPAP nasal strip, or a visually identical sham device (placebo) prior to first night sleeping between 4371-4530?m (14,340-14,800?ft). The primary outcome was AMS incidence, measured by Lake Louise Questionnaire (LLQ), with secondary outcomes of AMS severity (by LLQ) and physiologic sleep indices measured by continuous sleep monitor. Intent-to-treat analysis included 219 participants with comparable demographic characteristics, of which 115 received EPAP and 104 placebo. There was no decrease in AMS with EPAP intervention (14% EPAP vs. 17% placebo; p=0.65; risk difference (-)3.15%, 95% CI (-)12.85%-6.56%). While overall AMS severity was not different between groups, EPAP reported decreased incidence of headache (64% vs. 76%; p<0.05, OR 0.51, 95% CI 0.27-0.95) and dizziness (81% vs. 98%; p<0.03, OR 0.29, 95% CI 0.09-0.78). During sleep, EPAP resulted in significant improvements in average peripheral oxygenation (Spo2) (80% versus 78%; p<0.01, mean difference=2, 95% CI 0.58-3.63) and a reduced percentage of time below 80% Spo2 (31% vs. 46%; p<0.03, median difference=16, 95% CI 2.22-28.18). This lightweight and inexpensive EPAP device did not prevent acute mountain sickness, but did reduce the subgroup incidence of headache and dizziness while improving average nighttime peripheral oxygenation.

    View details for DOI 10.1089/ham.2014.1110

    View details for PubMedID 25950723

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