Lead Director - Data Science
Current
Apr 2023 - Present
AeroLeads people directory · profile
John Walker Email & Phone Number
Director of Data Science
at
CVS Health
2 work emails found
@cvshealth.com
5 phones found area 661 and 217
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Director of Data Science
Location
Greater Chicago Area, United States, United States
Who is John Walker? Overview
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Quick answer
John Walker is listed as Director of Data Science at CVS Health, based in Greater Chicago Area, United States, United States. AeroLeads shows a work email signal at cvshealth.com, phone signal with area code 661, 217, and a matched LinkedIn profile for John Walker.
John Walker previously worked as Lead Director - Data Science at Cvs Health and Principal Data Scientist at Cvs Health. John Walker holds Phd, Cognitive Neuroscience from University Of Illinois Urbana-Champaign.
Company email context
Email format at CVS Health
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{first}.{last}@cvshealth.com
89% confidence
AeroLeads found 2 current-domain work email signals for John Walker. Compare company email patterns before reaching out.
Profile bio
About John Walker
Current machine learning data scientist at CVS Health with a PhD in Cognitive Neuroscience from the University of Illinois at Urbana-Champaign. Skilled in the areas of exploratory data analysis, regression models, Bayesian statistics, and machine learning.Languages: Python, MATLAB, SQL, Shell Scripting familiar with R, C++, Java, HTMLTools: Pandas, NumPy, SciPy, Scikit-Learn, Git, Jupyter Notebooks, NLTK, Gensim, SpaCy, TensorFlow, Matplotlib, Seaborn, Docker, Bootstrap (Intermediate), Flask (Intermediate)Techniques: Bayesian Modeling, Bootstrapping, Exploratory Data Analysis, Experimental Design, Hypothesis Testing, Machine Learning (Linear and Logistic Regression, Boosted Decision Trees, Random Forests, k-NN, k-means, neural networks, SVM), Multivariate Statistics, NLP, Word2Vec, Time-Series
Listed skills include Fmri, Eeg, Diffusive Optical Imaging, C++, and 30 others.
Current workplace
John Walker's current company
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9 roles
John Walker work experience
A career timeline built from the work history available for this profile.
Principal Data Scientist
Dec 2020 - Apr 2023
Lead Data Scientist
Feb 2020 - Dec 2020
Senior Data Scientist
Oct 2018 - Feb 2020
Insight Data Science Fellow
- Consulted for Phraze, Inc. on classifying speech from doctor-patient interactions into topics that can be used to fill out electronic medical records
- Trained and validated a SVM using NLP techniques in Python to classify the speech to text translations, delivering the classifier pipeline in a Docker container
- Cleaned and analyzed 9000+ utterances between doctor and patient, producing actionable recommendations for improvement to their speech to text pipeline
Jun 2018 - Oct 2018
Postdoctoral Fellow
- Advisor: Joel L. Voss
- Built a pipeline in MATLAB to take raw time-series data of electrophysiological recordings from epileptic patients and analyze their spectrographic properties
- Analyzed 250+ GB of fMRI data using MATLAB and developed a statistical model to explain the effects of Transcranial Magnetic Stimulation (TMS) on memory networks
- Constructed a pipeline for preprocessing and analysis of TMS data for lab use
- Designed and programmed multiple experiments in MATLAB and Python to examine memory retrieval processes in the brain
Sep 2016 - Oct 2018
Graduate Research Assistant
- Advisor: Neal J. CohenCo-Advisors: Gabiele Gratton, Monica Fabiani
- Developed program of research to examine retrieval of information in the brain, the first to demonstrate the timing and location of memory reactivation and resulting in three peer-reviewed publications and 10+.
- Lead and mentored a group of 2-3 undergraduate research assistants
- Built and programmed custom eye-tracker for infant eye tracking
Aug 2009 - Aug 2016
Research Assistant
- Faculty Advisor: Russel PoldrackGraduate Student Advisor: Jessica Cohen
- Ran 10+ participants through an fMRI experiment exploring the commonalities in brain activation for different tasks labeled as “cognitive control”
- Preprocessed and analyzed fMRI data using Matlab resulting in a publication
Aug 2008 - Jul 2009
Lab Assistant
- Faculty Advisors: Robert Bjork, Elizabeth BjorkGraduate Student Advisor: John Nestojko
- Designed, created, and ran own experiment for senior thesis examining the effects of remembering a word on forgetting similar words resulting in publication in undergraduate journal
- Programed experiments in Java, Visual Basic, and Powerpoint for graduate students
- Ran hundreds of participants through experiments resulting in 3 poster presentations
- Constructed and administered lab website
Dec 2006 - Jul 2009
2 education records
John Walker education
Phd, Cognitive Neuroscience
University Of Illinois Urbana-Champaign
B.S., Cognitive Science
Ucla
FAQ
Frequently asked questions about John Walker
Quick answers generated from the profile data available on this page.
What company does John Walker work for?
John Walker works for CVS Health.
What is John Walker's role at CVS Health?
John Walker is listed as Director of Data Science at CVS Health.
What is John Walker's email address?
AeroLeads has found 2 work email signals at @cvshealth.com for John Walker at CVS Health.
What is John Walker's phone number?
AeroLeads has found 5 phone signal(s) with area code 661, 217 for John Walker at CVS Health.
Where is John Walker based?
John Walker is based in Greater Chicago Area, United States, United States while working with CVS Health.
What companies has John Walker worked for?
John Walker has worked for Cvs Health, Insight Data Science, Northwestern University - The Feinberg School Of Medicine, University Of Illinois At Urbana-Champaign, and Ucla.
How can I contact John Walker?
You can use AeroLeads to view verified contact signals for John Walker at CVS Health, including work email, phone, and LinkedIn data when available.
What schools did John Walker attend?
John Walker holds Phd, Cognitive Neuroscience from University Of Illinois Urbana-Champaign.
What skills is John Walker known for?
John Walker is listed with skills including Fmri, Eeg, Diffusive Optical Imaging, C++, Java, Html, Xml, and Php.
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