Physician Assistants (A-K)

Chief Physician Assistant

  • Roxanne Rosenberg, PA-C

    Chief Physician Assistant

    Roxanne Rosenberg attended SUNY at Buffalo receiving a BA in Biology. After graduation she worked for the Eye Bank for Sight Restoration in NYC as a corneal and scleral transplant coordinator. Roxanne then attended Long Island University PA program receiving her BS in Health Sciences and Physician Assistant studies. Since graduation she has worked as an Interventional Cardiology PA at Lenox Hill Hospital and at New York Presbyterian Hospital.

    Headshot of Roxanne Rosenberg, PA-C, Chief PA

Senior Physician Assistants

  • Roxanne Lightbody, MMSc, PA-C

    Senior Physician Assistant

    Originally from Wisconsin, Roxanne Lightbody received her B.S. from the University of Dayton in Pre-medical studies with a minor in Psychology. She then attended Yale University's Physician Associate Program where she graduated with a Masters of Medical Science in 2006. After four years of working as a physician assistant for Mount Sinai's OB/GYN department, she joined the Hospitalist service in 2010.

    Headshot of Roxanne Lightbody, MMSc, PA-C, Senior PA
  • Matthew Bundy, PA-C

    Senior Physician Assistant

  • Frances Pomerantz, PA-C

    Physician Assistant

    Franci Pomerantz attended St. John’s University where she received her Bachelor of Science in Physician Assistant Studies in 2012.  Franci joined the newly founded Nocturnalist service in October 2012 and is grateful to have the opportunity to practice medicine at NYP/Columbia. 

Hospitalist Physician Assistants (A-K)

  • Lisa Adams, PA-C

    Physician Assistant

    Lisa Adams obtained her Bachelor’s of Science in 2009 from the University of Oregon, with a concentration in math and human physiology. After graduation she worked as a research coordinator in Huntington Beach, California conducting clinical trials for asthma and allergy studies. Wanting to be more involved in patient care, Lisa obtained her Master’s of Science in Physician Assistant Studies from the Pace University-Lenox Hill Hospital PA Program in 2014. Since 2014, Lisa has been a PA for the Hospital Medicine group at NYP/CUIMC.

  • Ankita Arora, PA-C

    Physician Assistant

  • Brigid Brosnan, PA-C

    Physician Assistant

  • Bianca Campanella-Santiago, PA-C

    Physician Assistant

  • Janaira Caputo, PA-C

    Physician Assistant

    Headshot of Janaira Caputo, PA-C
  • Christine Casas, PA-C

    Physician Assistant

    Christine Casas obtained her associates degree in Chemistry from QCC and then graduated with her Bachelors in Physician Assistant studies from CUNY York College in 2012. She has been a PA with the hospitalist service since February 2013.

    Headshot of Christine Casas, PA-C
  • Katherine Chui, PA-C

    Per-Diem Physician Assistant

  • Danielle Clifford, PA-C

    Physician Assistant

    Headshot of Danielle Clifford, PA-C
  • Shannon Connell, PA-C

    Physician Assistant

  • Amanda Costanzo, PA-C

    Physician Assistant

  • Marinique Dabissiere, PA-C

    Physician Assistant

    Marinique Dabissiere attended FAU (Florida Atlantic Univeristy) where she received a Bachelor of Arts in Biology. She subsequently attended UMDNJ-RWJ PA program where she received a Master's degree in Physician Assisstant. She worked for six years in Interventional Cardiology at Lenox Hill Hospital, then joined the PA Medicine Service at NYP/Columbia in September 2010.

  • Maria Del Carmen Leon, PA-C

    Physician Assistant

  • Nadia DePaola, PA-C

    Per-Diem Physician Assistant

  • Bobbie Eapen, PA-C

    Physician Assistant

  • Rikki Frenkel, PA-C

    Physician Assistant

  • Leslie Frias, PA-C

    Physician Assistant

  • Kristie Gensheimer, PA-C

    Physician Assistant

    Headshot of Kristie Gensheimer, PA-C
  • Rasheedah Grant, PA-C

    Physician Assistant

  • Kate Gribetz, PA-C

    Physician Assistant

    Headshot of Kate Gribetz, PA-C
  • Alexandra Grout, PA-C

    Physician Assistant

  • Elizabeth Herbert, PA-C

    Per-Diem Physician Assistant

  • Jennifer Jackson, PA-C

    Physician Assistant

  • Anna Kaplan, PA-C

    Per-Diem Physician Assistant

    Anna Kaplan received her Masters in Physician Assistant Studies from Wagner College PA Program in Staten Island, NY. Throughout her PA training, she has worked in multiple medical offices in various fields as a medical assistant and in medical code billing. She joined the PACS service in 2009 and is eager to grow and flourish in the field of Internal Medicine.

  • Preetkamal Kaur, PA-C

    Physician Assistant

  • Andrea Kazlas, PA-C

    Physician Assistant

    Andrea Kazlas was an English teacher and musician who became a Physician Assistant later in life. She started her medical career at the Montefiore Surgical Residency program, then worked briefly in Cardiothoracic Surgery before finding her niche in Internal Medicine. She is proud to be a founding member of the PACS service, and is grateful for the opportunity to participate in the excellence represented by NYP/Columbia.

  • Megan Kelly, MSHS, PA-C

    Physician Assistant

    Megan Kelly attended The Pennsylvania State University where she received her Bachelor of Science in Nutritional Science in 2015.  Prior to attending physician assistant school, Megan worked in emergency medicine and in outpatient orthopedics.  She graduated with a Masters of Science in Health Sciences from the Weill Cornell Graduate School Physician Assistant Program in 2019 prior to joining NYP/Columbia." 

  • Tiffany Kim, PA-C

    Per-Diem Physician Assistant