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Dr. Portnoy is on Doximity

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Education & Training

  • University of Michigan School of Public Health A Occupational Medicine
    University of Michigan School of Public Health A Occupational MedicineResidency, Occupational Medicine, 1997 - 1999
  • St Mary's Hospital and Medical Center
    St Mary's Hospital and Medical CenterResidency, Internal Medicine, 1993 - 1994
  • California Pacific Medical Center
    California Pacific Medical CenterResidency, Internal Medicine, 1991 - 1992
  • Kaiser Permanente Northern California (San Francisco)
    Kaiser Permanente Northern California (San Francisco)Internship, Internal Medicine, 1990 - 1991
  • Michigan State University College of Human Medicine
    Michigan State University College of Human MedicineClass of 1990

Certifications & Licensure

  • AZ State Medical License
    AZ State Medical License 2013 - Present
  • NY State Medical License
    NY State Medical License 1996 - 2026
  • CA State Medical License
    CA State Medical License 2006 - 2024
  • VT State Medical License
    VT State Medical License 2017 - 2024
  • NM State Medical License
    NM State Medical License 2009 - 2022
  • IA State Medical License
    IA State Medical License 2019 - 2020
  • MI State Medical License
    MI State Medical License 1985 - 2016
  • American Board of Preventive Medicine Occupational Medicine
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Hospital Affiliations