Residents

PGY-1

Kelly Jiang, MD
Medical school: Johns Hopkins School of Medicine
Undergraduate school: University of Pennsylvania
Email: Kelly.Jiang@pennmedicine.upenn.edu
Research interests: Complex spine/deformity, neurotrauma, neuro-oncology, chronic traumatic encephalopathy

Ellen O'Callaghan, MD
Medical school: Duke University School of Medicine
Undergraduate school: University of Pennsylvania
Email: Ellen.OCallaghan@pennmedicine.upenn.edu
Research interests: Spine oncology, neuro-oncology, perioperative optimization, medical/surgical education

Alexander Ren, MD
Medical school: Stanford University School of Medicine
Graduate school: University of Cambridge
Undergraduate school: Harvard University
Email: Alexander.Ren@pennmedicine.upenn.edu
Research interests: Neuro-oncology, tumor immunology, cancer neuroscience, translational research

Shikha Singh, MD
Medical school: University of Pennsylvania
Undergraduate school: Johns Hopkins University
Email: Shikha.Singh@pennmedicine.upenn.edu
Research interests: Deep brain stimulation, Regenerative therapies, Movement disorders

PGY-2

Mert Marcel Dagli, MD
Medical school: Medical University of Innsbruck, Austria
Undergraduate school: Johannes Kepler University
Email: Marcel.Dagli@pennmedicine.upenn.edu
Research interests: Spine outcomes, adult spinal deformity, MISS, ML diagnostic & predictive modeling, NLP & LLM systems level optimization

Michelot Michel, MD
Medical school: University of Florida College of Medicine
Undergraduate school: Florida International University
Email: Michelot.Michel@pennmedicine.upenn.edu
Research interests: Neuro-oncology, cancer immunology, spatial proteomics, surgical outcomes

Rishab Ramapriyan, MD
Medical school: Harvard Medical School
Undergraduate school: Rice University
Email: Rishab.Ramapriyan@pennmedicine.upenn.edu
Research interests: Neuro-oncology, immunotherapy, cell therapy, radiation, clinical trials, bioethics

PGY-3

Hasan Ahmad, MD
Medical school: Perelman School of Medicine at the University of Pennsylvania
Undergraduate school: University of California, Berkeley
Email: Hasan.Ahmad@pennmedicine.upenn.edu
Research interests: Spinal cord injury, minimally invasive spine surgery, digital health

Michael Shost, MD
Medical school: Case Western Reserve University School of Medicine
Undergraduate school: University of Michigan
Email: Michael.Shost@pennmedicine.upenn.edu
Research interests: Spine Outcomes, Machine Learning, Medical Education

Addison Quinones, MD
Medical school: Icahn School of Medicine at Mount Sinai
Undergraduate school: Johns Hopkins University
Email: Addison.Quinones@pennmedicine.upenn.edu
Research interests: Cortical reorganization, neuro-oncology, traumatic brain injury, complex spine/deformity, spinal cord injury

PGY-4

Timothy Darlington, MD, PhD
Medical school: Duke University School of Medicine
Undergraduate school: Case Western Reserve
Email: Timothy.Darlington@pennmedicine.upenn.edu
Research interests: Functional/Epilepsy, motor control and motor dysfunction, brain machine interfaces

Canada Montgomery, MD
Medical school: Perelman School of Medicine at the University of Pennsylvania
Undergraduate school: University of Pittsburgh
Email: Canada.Montgomery@pennmedicine.upenn.edu
Research interests: Pediatrics, concussion/traumatic brain injury, health disparities, health policy

Daniel Zhang, MD, PhD
Medical school: Perelman School of Medicine at the University of Pennsylvania
Undergraduate school: Massachusetts Institute of Technology
Email: Daniel.Zhang@pennmedicine.upenn.edu
Research interests: Neuro-oncology, cancer genomics, tumor immunology, medical device development

PGY-5

Kamila Bond, MD, PhD
Medical school: Mayo Clinic Alix School of Medicine
Undergraduate school: Wellesley College
Email: Kamila.Bond@pennmedicine.upenn.edu
Research interests: Pediatrics, neuro-oncology, precision medicine, machine learning

Yohannes Tsehay, MD
Medical school: Johns Hopkins University School of Medicine
Undergraduate school: Wheaton College, Massachusetts
Email: Yohannes.Tsehay@pennmedicine.upenn.edu
Research interests: Spine, spinal cord injury, neurosurgical device development, machine learning and artificial intelligence in neurosurgery, and cerebrovascular

Alex Vaz, MD, PhD
Medical school: Duke University School of Medicine
Undergraduate school:Duke University
Email: Alex.Vaz@pennmedicine.upenn.edu
Research interests: Epilepsy, deep brain stimulation, cognition, memory, psychiatric disorders

PGY-6

Joshua Golubovsky, MD
Medical school: Case Western Reserve University School of Medicine
Undergraduate school: Tufts University
Email: Joshua.Golubovsky@pennmedicine.upenn.edu
Research interests: Spine oncology, biomedical engineering, and device design

Ben Jiahe Gu, MD
Medical school: Perelman School of Medicine at the University of Pennsylvania
Undergraduate school: Yale University
Email: Ben.Gu@pennmedicine.upenn.edu
Research interests: Restorative neuroscience, neural tissue engineering

Sanjana Salwi, MD
Medical school: Vanderbilt University
Undergraduate school: Columbia University
Email: Sanjana.Salwi@pennmedicine.upenn.edu
Research interests: Bioethics, health policy, healthcare delivery

PGY-7

Sonia Ajmera, MD
Medical school: University of Tennessee Health Science Center College of Medicine
Undergraduate school: Vanderbilt University
Email: Sonia.Ajmera@pennmedicine.upenn.edu
Research interests: Skull base, cerebrovascular, medical and surgical education

Rashad Jabarkheel, MD
Medical school: Stanford University
Undergraduate school: Emory University
Email: Rashad.Jabarkheel@pennmedicine.upenn.edu
Research interests: Open and endovascular neurosurgery

Samuel Tomlinson, MD
Medical school: University of Rochester School of Medicine & Dentistry
Undergraduate school: Swarthmore College
Email: Samuel.Tomlinson@pennmedicine.upenn.edu
Research interests: Functional/epilepsy, neuro-oncology, neurotrauma, cognitive neuroscience