Adult Neuro Residents

Lorraine Edrington 
Sr. Neurology Residency Program Coordinator

Kelly Todd
Residency Assistant 


Jordan Amar, MD and Joshua Newman, MD

2021-2022 Academic Chief Residents

Christopher Anderson, MD 

2021-2022 Wellness Chief Resident

Joshua Okonkwo, MD

2021-2022 Education Chief Resident

Enmanuel Perez Martinez, MD, PhD

2021-2022 QI Chief Resident



Christina Overmann, MD 

2021-2022 Outpatient Services Chief Resident

PGY – 4


Jordan Amar, MD

Hometown: Los Angeles, CA
Undergraduate: UCLA
Graduate: Northwestern University (MSc, Neurobiology)
Medical School: Lewis Katz School of Medicine at Temple University
Sub-specialty interests: Vascular neurology, atypical stroke syndromes, stroke-in-the-young, vasculitides, inflammatory disorders, neuroinfectious diseases, inpatient neurology
Research Interests: I've had my hand in a few clinical projects of varying size, and have been working on scaling up to big-data analyses
Outside of the hospital: Racquetball, football season (Go Bruins!), trying new restaurants, and hanging out with my classmates who are all very fun, very smart people.

Christopher Anderson, MD

Hometown: New Orleans, LA
Undergraduate: Tulane University
Medical School: Louisiana State University Health Sciences Center - New Orleans
Sub-specialty: Headache/Face pain, interventional pain management, diagnosis and treatment of painful large/small fiber neuropathy.
Research Interests: Clinical trials, quality improvement
Outside of the hospital: Committed indoorsman. Netflix, video games, Sci Fi/Fantasy, board-games. Will leave my apartment for restaurants and going out from time to time.

Matthew Baer, MD, PhD

Hometown: Brooklyn, NY
Undergraduate: University of Virginia - Charlottesville, Virginia
Graduate: Virginia Commonwealth University
Medical School: Virginia Commonwealth University School of Medicine
Sub-specialty: Neuro-ophthalmology, neuromuscular disorders, circadian rhythm disorders
Research Interests: Biostatistics
Outside of the hospital: Cycling, architecture, cooking, photography, zymurgy, obscure words, history of railroads, calligraphy, origami

Nathan Farkas, MD

Hometown: New York, NY
Undergraduate: Macaulay Honors College at CUNY Queens College
Medical School: State University of New York Downstate Medical Center College of Medicine
Sub-specialty: Vascular and Interventional Neurology 
Research Interests: Technology and Innovation, Stroke QI, and Endovascular Neurologic Therapies
Outside of the hospital: I love to spend time with my wife and daughter exploring, cooking, and learning new things. I am a serial hobbyist and have been having fun with hydroponic gardening and fermentation science (e.g charcuterie aging, zymurgy, cheesemaking, and sourdough baking). We hope to start traveling again so I can resume exploring the underwater earth via scuba diving, but until then I hope to get into beekeeping. Feel free to hit me up to try something new!

Eva Klinman, MD, PhD

Hometown: Washington, DC
Undergraduate: Massachusetts Institute of Technology
Medical School: Perelman School of Medicine at the University of Pennsylvania
Sub-specialty: primarily research, interest in cognitive, movement, neuromuscle and neuro-opthamology
Research Interests: Background in imaging and plan to continue to examine the pathways that sick and aging neurons take to fall apart.
Outside of the hospital: Hanging out with my husband and co-residents, nail art, two fresh-water aquariums, estate sales, board games.  Love eating, although I am a terrible cook.

Joshua Newman, MD

Hometown: Baltimore, MD
Undergraduate: University of Virginia
Medical School: Georgetown University School of Medicine
Sub-specialty: Neuromuscular Disorders, Immune and Inflammatory Disorders, Neuro-Infectious Diseases, Inpatient Neurology
Research Interests: Novel therapeutics for hereditary neuromuscular diseases
Outside of the hospital: Golf (since retiring from Lacrosse), Pickle Ball, Soccer, Breweries, Bars and Restaurants, City Museum, Forest Park, Cooking, unwinding with reality TV

Joshua Okonkwo, MD

Hometown: Hartford, CT
Undergraduate: Yale University
Medical School: Columbia University College of Physicians and Surgeons
Sub-specialty: Neuromuscular Medicine
Research Interests: Neuro-regeneration, Neuroimmunology, Neurodiagnostics
Outside of the hospital: Do it yourself projects, drawing / animation, soccer

Enmanuel Perez Martinez, MD, PhD

Hometown: San Juan, PR
Undergraduate: University of Puerto Rico-Rio Piedras
Medical School: University of Miami Leonard M. Miller School of Medicine
Sub-specialty: Academic Neurology, Sports Neurology
Research Interests: Neuro-glial interface - it's role in brain psysiology and pathophysiologic processes (basic science and translational research); traumatic brain injury; other 
Outside of the hospital: Spending time with the family and playing sports (sand volleyball and basketball).

Christopher Ray, MD

Hometown: Florence, AL
Undergraduate: Vanderbilt University
Medical School: University of Alabama - Birmingham
Sub-specialty: Vascular/Neurohospitalist
Research Interests: writing up interesting patients
Outside of the hospital: I love playing ultimate frisbee and running, and have completed several half marathons. I enjoy cooking as well, and occasionally try to paint with watercolor and gouache. My wife and I are active at our church, and spend lots of time playing with our bunny and guinea pigs when we’re home.

Drew Roach, MD

Hometown: Chicago, IL
Undergraduate: Kansas State University
Medical School: University of Kansas School of Medicine-Wichita
Sub-specialty: Neuromuscular
Research Interests: TBD
Outside of the hospital: I spend a lot of my free time hanging out with my wife and our Italian Greyhound, mainly in Forest Park and the Central West End.  I also enjoy watching sports, going to see live music, and traveling.

Mani Valtcheva, MD, PhD

Hometown: Plovdiv, BGR
Undergraduate: University of Georgia
Medical School: Washington University in St. Louis School of Medicine
Sub-specialty: Neuromuscular
Research Interests: Biomarkers of neuroinflammation and neurodegeneration
Outside of the hospital: My toddler and newborn daughters keep me quite busy outside of work. We enjoy going to many of our local parks and the zoo. I also enjoy movies, taking my camera out for some macro photography (with great spots to take photos at the botanical gardens or my backyard), and more recently teaching my daughter the joy of jigsaw puzzles.



Michael Butler, MD

Hometown: Cartersville, GA
Undergraduate: Georgia Institute of Technology
Medical School: University of Oklahoma College of Medicine
Sub-specialty: Headache, Stroke
Research Interests: Migraine, primary stroke prevention
Outside of the hospital: Running, Swimming, exploring the city with my fiance and dog, going to the zoo and local parks and skiing.

Luis De Carvalho Paixao, BMBCh, MSc

Hometown: V. N. Gaia, Porto, Portugal
Undergraduate: University College London 
Graduate: University of Oxford
Medical School: University of Oxford
Sub-specialty: Considering Dementia
Research Interests: Brain age biomarkers and therapies, Alzheimer's disease, delirium, preventive neurology, clinical trials
Outside of the hospital: Latin dance, Lindy hop, yoga, cycling, exploring St. Louis museums and music scene, traveling. 

William Everett, MD

Hometown: Morton, Mississippi
Undergraduate: Washington University in St. Louis School of Medicine
Medical School: Washington University in St. Louis School of Medicine
Sub-specialty: Considering neuromuscle or movement disorders
Research Interests: TBD
Outside of the hospital: I spend most of my free time with my wife, Elyse, a recent WUSM Neuro residency alumna, and our children, Roland and Adelaide.  Other interests include guitar/piano, cooking, weightlifting and linguistics.

Amy Lin, MD, MPH

Hometown: Los Angeles, CA
Undergraduate: Harvard University
Graduate: Keck School of Medicine of the University of Southern California
Medical School: Keck School of Medicine of the University of Southern California
Sub-specialty: Undecided
Research Interests: Stroke prevention
Outside of the hospital: Baking, exploring gardens, visiting the St. Louis Zoo

Christina Overmann, MD

Hometown: Franklin, IL
Undergraduate: Southern Illinois University Edwardsville
Medical School: University of Illinois College of Medicine - Rockford
Sub-specialty: General Neurology
Research Interests: TBD
Outside of the hospital: Spending time with my husband and our son, dogs, and cat.  When I'm not busy doing that, I enjoy doing anything crafty and exploring restaurants in the area.

Arjun Padalia, MD

Hometown: Sarasota, FL
Undergraduate: University of North Carolina
Medical School: University of Central Florida College of Medicine
Sub-specialty: Neurohospitalist, Stroke, or Neurocritical Care
Research Interests: TBD
Outside of the hospital: Watching TV, reading, eating, and playing video games with my twin brother, Kishan

Min Qiao, MD

Hometown: Carmel, IN
Undergraduate: Indiana University School of Medicine
Medical School: Indiana University School of Medicine
Sub-specialty: Still deciding but currently neuro-ICU, neuromuscle, or movement disorders
Research Interests: TBD
Outside of the hospital: I enjoy cooking and trying new recipes, love trying new restaurants, teaching my dog new tricks, running, hiking, painting, sketching and drawing.

Michelle Rudman, MD, PhD

Hometown: Houston, TX
Undergraduate: University of South Carolina at Columbia
Medical School: University of Miami Leonard M. Miller School of Medicine
Sub-specialty: Dementia, Movement, and Neuromuscle
Research Interests: Basic pathologic mechanisms of Alzheimer disease with a focus on Neuroinflammation
Outside of the hospital: Running, hiking, pool days, and game nights with my amazing co-residents

Arup Sarma, MD, PhD

Hometown: Vineland, NJ
Undergraduate: Massachusetts Institute of Technology
Medical School: University of Chicago - Pritzker School of Medicine
Research Interests: 
Outside of the hospital: 

Ana Vaquer, MD, PhD

Hometown: San Juan, PR
Undergraduate: University of Puerto Rico
Medical School: University of Puerto Rico School of Medicine
Sub-specialty: Most likely Cognivite/Behavior
Research Interests: Dementia
Outside of the hospital: I love the beach but will transition to lakes here in Missouri.  I also enjoy baking, and most importantly, spending time with my dogs Lune, Sam and Kiko.

Wendy Xiao, MD

Hometown: Nashua, NH
Undergraduate: Dartmouth College
Medical School: New York University School of Medicine
Sub-specialty: Undecided
Research Interests: TBD
Outside of the hospital: Running, weightlifting, hiking, and skiing.



Ravi Chopra, MD, PhD

Hometown: Kenilworth, IL
Undergraduate: Northwestern University
Graduate: University of Michigan
Medical School: University of Michigan 
Sub-specialty: Undecided, but likely Neuromuscular, Movement, or Cognitive
Research Interests: Ion channel biology in neurodegenerative disease, cell fate/type, homeostatic excitability
Outside of the hospital: Spending time with my family, running, hiking, playing soccer.

Jesse Crayle, MD

Hometown: The Triangle, NC
Undergraduate: University of North Carolina at Chapel Hill
Medical School: Duke University
Sub-specialty: TBD
Research Interests: neuromuscular (especially ALS), neuro-ID, neuroimmunology
Outside of the hospital: You can find me cooking 6-course meals, baking desserts, playing guitar, weight-lifting, doing home improvement projects and petting animals.

Maren Gregerson, MD

Hometown: Des Moines, IA
Undergraduate: Macalester College
Medical School: Tulane University
Sub-specialty: Likely something in the fields of Neurocognition and/or Neuropalliative Care
Research Interests: Dementia, Cognition
Outside of the hospital: costume parties, crafting cocktails, live music, trying all the gluten-free restaurants in a 50 mile radius.

Tina Kiguradze, MD

Hometown: Nizhny Novgorod, Russia
Undergraduate: Florida Institute of Technology
Medical School: University of Central Florida
Sub-specialty: Considering dementia, movement disorders, general neurology, academic neurology
Research Interests: Cognitive neurology, Alzheimer's disease, neuroregeneration, neuropsychiatry, and toxicology
Outside of the hospital: Animal rescue, running, weight lifting, traveling.

Gabrielle Lindley, MD

Hometown: Daphne, AL
Undergraduate: University of Alabama
Medical School: University of Alabama
Sub-specialty: TBD
Research Interests: Cognitive and Behavioral Neurology, Neuro-infectious Diseases, Neuroimmunology
Outside of the hospital: Exploring local breweries and restaurants, gardening and botany, cooking, singing, linguistics, reading and writing, petting all the local dogs of St. Louis, and spending time with family and friends. 

Sneha Narasimhan, MD, PhD

Hometown: Allentown, PA
Undergraduate: University of Pennsylvania
Graduate: University of Pennsylvania
Medical School: University of Pennsylvania
Sub-specialty: dementia, movement disorders
Research Interests: neurodegeneration (Alzheimer's, FTD)
Outside of the hospital:  Hiking/camping, big foodie, marital arts.

Kristina Rankine, MD

Hometown: Manchester, Jamaica
Undergraduate: Georgia Southern University
Medical School: Charles E. Schmidt College of Medicine at Florida Atlantic University
Sub-specialty: Undecided
Research Interests: Dementia, Neuroimmunology and Neuro ID
Outside of the hospital: Avid anime-watcher, music lover, poolside lounger/swimmer and anything at Forest Park.

Shashika Rodrigo, MD

Hometown: Houston, TX
Undergraduate: University of Texas at Austin
Medical School: University of Texas Medical Branch at Galveson
Sub-specialty: To be determined
Research Interests: To be determined
Outside of the hospital: Cooking delicious vegan food, baking sweet treats, biking around St. Louis and walking in Tower Grove Park with my husband.

Georgia Shelton, MD, MPH

Hometown: Sao Paulo, Brazil/Edmond, OK
Undergraduate: Harvard University
Graduate:  University of Texas School of Public Health
Medical School: The University of Texas Southwestern 
Sub-specialty: I am an undifferentiated neuron, hoping to see what I grow into! 
Research Interests: I have a strong interest in the epidemiology of neurologic disease and the interplay of genetic and environmental factors in the development of disease.
Outside of the hospital: Long walks in Forest Park with my husband, reading novels, playing board games, lurking in coffee shops, cooking (usually) delicious meals, and doing the bidding of my two very demanding cats. 

Hannah Wang, MD

Hometown: Edmond, OK
Undergraduate: Cornell University
Medical School: University of Oklahoma
Sub-specialty: TBD
Research Interests: TBD
Outside of the hospital: Trying out different restaurants/cafes, discovering cool places in St. Louis, spending time with family/friends, watching short cooking videos and anime.

Wei Zhao, MD

Hometown: Changsha, China
Undergraduate: China Parmaceutical University
Graduate: Drexel University
Medical School: Albert Einstein College of Medicine
Sub-specialty: have not decided
Research Interests: rare disease diagnosis and treatment, post-stroke rehabilitation, etiologies of ischemic and hemorrhagic strokes, statistics in medicine, genetics and genomics studies
Outside of the hospital: aviation (I don't have a license yet), watching documentaries, running



Christine Ashton, MD

Hometown: NA military
Undergraduate:  Harvard College
Graduate: NA
Medical School:  Quinnipiac University
Sub-specialty: Movement
Research Interests: DBS, gait
Outside of the hospital: Board games, bird watching, swimming, video games, baking & cooking

Salena Cui, MD

Hometown:  Ottawa, Canada
Undergraduate: Harvard University
Graduate: Sidney Kimmel Medical College at Thomas Jefferson University
Medical School: Sidney Kimmel Medical College at Thomas Jefferson University
Sub-specialty: undifferentiated
Research Interests: to be further informed by my future subspecialty... currently interested in cognition, neurodegeneration, dementia 
Outside of the hospital: I enjoy playing piano, running, hiking, and in general spending time outdoors and with friends!

Jared Goodman, MD, PhD

Hometown: Gainesville, FL
Undergraduate: Emory University
Graduate: Washington University School of Medicine in St. Louis (MD/PhD)
Medical School: Washington University School of Medicine in St. Louis (MD/PhD)
Sub-specialty: Undecided
Research Interests: Molecular genetics, neuroimmunology and other molecular and cellular mechanisms of brain function at baseline and in disease.
Outside of the hospital: Exercising, playing sports, cooking, watching movies and my Florida Gators and Jacksonville Jaguars, reading, exploring bars and restaurants with family and friends or anything else that gets me outside.

Alison Hixon, MD, PhD

Medical School: 
Research Interests: 
Outside of the hospital:

Kevin Hochstrasser, MD

Medical School: 
Research Interests: 
Outside of the hospital:

Nesreen Jaafar, MD

Hometown: Lebanon
Undergraduate: Lebanese University 
Medical School: Lebanese University, Faculty of Medical Sciences
Subspecialty: Neuromuscular Medicine
Research Interest: Amyotrophic Lateral Sclerosis, Immune myopathy and Dermatomyopathies
Outside of the hospital: outdoor activities in the Forest Park, exploring new places and trying new restaurants with my husband, cooking and baking

Alan Li, MD

Hometown:  Chicago, IL
Undergraduate: University of Michigan, Ann Arbor
Medical School: University of Illinois at Chicago
Sub-specialty: Stroke, Endovascular, Neuro-hospitalist, Neurocritical care
Research Interests: TBD
Outside of the hospital: Watching movies, board games, puzzles, exploring new restaurants, and spending time with family and friends

Talora Martin, MD

Hometown:  Pittsburgh, PA
Undergraduate: Grinnell College, IA
Medical School: Case Western Reserve University
Sub-specialty: To be determined
Research Interests: Past projects have included neuromodulation in Parkinson's disease, neurocognitive changes in chronic HIV infection, fixational eye movements in strabismus
Outside of the hospital: Reading, board games, restaurants, playing Ultimate Frisbee, hiking/camping

Amjad Samara, MD

Hometown: Palestine
Undergraduate: An-Najah National University
Medical School: An-Najah National University, Faculty of Medicine and Health Sciences
Sub-specialty: Neuroimmunology or cognitive and behavioral neurology, and academic neurology
Research Interests: My background is in structural and function neuroimaging research. Currently, I am interested in the role of neuroinflammation in neurological and psychiatric disorders.
Outside of the hospital: running, weight training, watching movies and soccer matches, board games or exploring St. Louis with friends and classmates.

Gabriel Vazquez Velez, MD, PhD

Hometown: San Juan, Puerto Rico
Undergraduate: University of Puerto Rico: Rio Piedras Campus
Graduate: Baylor College of Medicine
Medical School: Baylor College of Medicine
Sub-specialty: Movement disorders, Neuromuscle
Research Interests: Neurobiology of neurodegeneration. Specifically, the development of disease modifying therapeutics for diseases such as Parkinson's disease, Alzheimer's disease, and ALS.
Outside of the hospital: I enjoy playing electric guitar, riding my bike, and playing videogames.

Humsini Viswanath, MD

Hometown:  Houston, TX
Undergraduate: University of California, Berkeley 
Graduate: Texas A&M College of Medicine 
Medical School: Honestly, all of neuro, but if I had to pick my top 3 - I would say epilepsy, neuroimmunology, and neuro-ophthalmology 
Sub-specialty: Still up in the air, but previously studied addiction and psychiatric illnesses using fMRI and resting state. 
Research Interests: Watching TV (trash and non-trash), baking/cooking, trying new restaurants, arts & crafts, hiking, plant mom, playing board games, and just spending time with friends and family.
Outside of the hospital:

One of the greatest resources of your PGY-2 year is our valuable team of nurse practitioners, pictures left to right, Emily Daniel, Becky Hopfinger, and Carliss Garrett.