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  • Whitney Romero smiles for her photo.

    Whitney Felker, MPAS, PA-C

    Advanced Practice Provider

    210-450-9060

  • Dr. Fichtel smiles for a profile photo.

    Frank Fichtel, MD

    PRN

    210-450-9060

  • Dr. Fisher poses for a portrait in a white coat.

    Jonathan Fisher, MD

    Faculty Member
  • John R. Floyd II, MD, FAANS

    John R. Floyd II, MD, FAANS

    Chair - Department of Neurosurgery, Carl Raba Family Chair in Neuro-Oncology
    Professor of Neurosurgery and Otolaryngology

    210-450-9060

  • Research Associate David Garza smiling for his staff photo.

    David Garza

    Project Coordinator
  • Michael Gaub poses for his staff photo.

    Michael Gaub, MD

    PGY VI
    Education Program
    Residency

    Medical School

    Medical School (MD) - University of Arizona College of Medicine - Tucson, 2016-2020

    Undergraduate Studies

    Undergraduate (BS in Biochemistry) - Arizona State University, 2008-2013

  • Dr. Gernsback smiles for a profile photo.

    Joanna Gernsback, MD

    Assistant Professor • Neurosurgery

    210-450-9060

  • Pegah Ghamasaee, MD, smiles for her portrait in a white coat.

    Pegah Ghamasaee, MD

    Faculty Member

  • Samantha Gonzalez, PA, MS

    Advanced Practice Provider

    210-450-9060

  • Cristian Gragnaniello, MD, PhD

    Cristian Gragnaniello, MD, PhD

    Assistant Professor of Neurosurgery
    Spine and Skull Base Neurosurgery

    210-450-9060

  • Marissa Gublis smiling for her staff photo.

    Marissa Gulbis, PA-C, MPAS

    Advanced Practice Provider

    210-450-9060

  • Rajesh Gunaji posing for his staff photo.

    Rajesh Gunaji, MD

    PGY VI
    Education Program
    Residency

    Medical School

    Doctor of Medicine: Uniformed Services University of the Health Sciences, Bethesda, MD, 2015-2019

    Undergraduate Studies

    Bachelor of Arts: (1) Neuroscience and (2) Public Health Studies, Johns Hopkins University, Baltimore, MD, 2007-2011

  • Hyeju Jeon smiles for her staff portrait.

    Hyeju Jeon, DNP

    Nurse Practitioner
  • William Chase Johnson poses in a suit and tie for his profile photo.

    William Chase Johnson, MD

    PGY VII
    Education Program
    Residency

    Medical School

    July 2015-May 2019
    University of Texas Health Science Center at San Antonio, San Antonio, TX

    Undergraduate Studies

    August 2010-December 2014
    University of Arkansas, Fayetteville, AR
    Bachelor of Science, Biochemistry

  • Dr. Kaculini smiles for his profile photo.

    Christian Kaculini, MD

    PGY III
    Education Program
    Residency

    Medical School

    The University of Texas Health Science Center at San Antonio Long School of Medicine

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