Denver, Colorado

Healthcare analyst and applied biostatistician.

I work in healthcare quality and clinical research. My background includes statistical analysis, reporting, data management, public health, and scientific writing.

Background

Areas of work

Healthcare analytics

Clinical quality reporting, dashboards, outcomes analysis, data validation, and operational reporting.

Biostatistics

Study design, data preparation, regression, survival analysis, longitudinal analysis, and interpretation.

Clinical research

Research operations, data management, regulatory compliance, statistical analysis, and scientific writing.

Public health

Health policy, advocacy, education, program support, and cross-functional project work.

SQL
Data cleaning, joins, CTEs, aggregations, conditional logic, validation, and reporting
Statistics
SAS, R, STATA, regression, survival analysis, and longitudinal analysis
Python
Data preparation, analysis, and workflow automation
Reporting
Excel, Tableau, Epic, data visualization
Research
Study design, GCP, IRB, manuscripts
Healthcare
Quality reporting, clinical data, outcomes

Experience

Work and education

2026–Present

Quality Analyst, Orthopedic Surgery

Denver Health Medical Center

Healthcare quality analytics, outcomes reporting, dashboards, data validation, and quality initiatives.

2023–2025

Professional Research Assistant

University of Colorado Anschutz Medical Campus

Multi-site clinical research, regulatory compliance, data management, and scientific communication.

MPH, Applied Biostatistics

University of Colorado Anschutz Medical Campus

BS, Public Health

University of Colorado Denver

Development

Technical training

Epic certification training

Expected October 2026

Cogito Fundamentals · Clarity Data Model · Caboodle Data Model · Clinical Data Model

SQL reporting, healthcare data warehousing, clinical reporting, dashboards, data validation, and population health analytics.

DataCamp SQL coursework

Completed

Introduction to SQL · Intermediate SQL

Querying, filtering, aggregation, joins, subqueries, common table expressions, and data transformation.

Research

Publications and manuscripts

  1. Casillas D, Bjornstad P, et al. Insulin Secretion, Sensitivity, and Kidney Function in Young Individuals With Type 2 Diabetes. Diabetes Care. 2024;47(3):409–417.

    PublishedPubMed
  2. Casillas D, Bjornstad P, et al. Effects of Dapagliflozin on Sodium Excretion, Blood Pressure, and Volume Status in Patients With Type 2 Diabetes and/or Chronic Kidney Disease: The DAPASALT Trial. Diabetes, Obesity and Metabolism.

    In press
  3. Heerspink HJL, Casillas D, et al. Effects of Zibotentan, Dapagliflozin, and Their Combination on Kidney and Fluid Parameters in Individuals With Chronic Kidney Disease: A Randomized Double-Blind Placebo-Controlled Crossover Trial. Submitted to Kidney International, June 2026.

    Submitted manuscript

Work samples

Selected materials

Public research and analysis work. Confidential or patient information is not posted.

Research posters

Obesity Drives Cardiac Hypertrophy while Diabetic Kidney Disease Links to Diastolic Dysfunction and Vascular Stiffness in Young Adults with Type 2 Diabetes

Research poster | Co-author

Download PowerPoint

Effects of Zibotentan, Dapagliflozin, and Their Combination on Albuminuria and Fluid Parameters in Individuals With Chronic Kidney Disease

Research poster | Co-author and presenter

View PDF

Evaluation of Racial and Ethnic Differences in Glucose and Lipid Metabolism and Impact on Neonatal Growth Outcomes among Women with Gestational Diabetes

Research poster

View PDF

MPH capstone

Copeptin and Metabolic and Kidney Markers in Type 1 and Type 2 Diabetes: A Cross-Sectional Analysis

MPH capstone | Final report

View PDF

The Role of Copeptin in Type 1 and Type 2 Diabetes: Associations with Metabolic, Vascular, and Kidney Health

MPH capstone | Presentation

Download PowerPoint

Coursework

GLP-1 Receptor Agonist Therapy During Adolescence and Growth Outcomes

Pharmacoepidemiology coursework | Final paper

View PDF

Code: Selected SQL, SAS, R, and Python examples will be added next.

Contact

Professional inquiries

Healthcare analytics, biostatistics, clinical research, public health, or professional website work.

danielcasillas00@icloud.com