Johnson’s research focuses on cardiovascular pharmacogenomics and genomic medicine implementation. She is an internationally-recognized leader in pharmacogenomics and genomic medicine, with over 300 peer reviewed publications and nearly $50 million in research funding as principal investigator. In 2015, 2016, 2017 she was named a Thomson Reuters (now Clarivate Analytics) Highly Cited Scientist in Pharmacology and Toxicology, and in 2018 in the Cross Discipline category, indicating she is in the top 1% of the most highly cited scientists in the field globally. Johnson has served on the Nonprescription Drugs Advisory Committee of the FDA, the XNDA Study Section at NIH, and in numerous scientific capacities with NIH’s NHLBI. She has had leadership roles in the American College of Clinical Pharmacy (ACCP), the American Heart Association (AHA), and the American Society of Clinical Pharmacology and Therapeutics (ASCPT), for which she completed her term as President in 2017. She is an elected fellow of the ACCP, the AHA and the American College of Clinical Pharmacology (ACCP-Pharmacology). Johnson was elected to the National Academy of Medicine (formerly Institute of Medicine) in 2014 and has received numerous other awards including teaching awards from both the University of Tennessee (1996) and the University of Florida (2001); the Ohio State University Alumni Association William Oxley Thompson Award for early career achievement (1997), Leon I Goldberg Young Investigator Award from the ASCPT (2004), Paul Dawson Biotechnology Research Award, American Association of Colleges of Pharmacy (AACP) (2007), Therapeutic Frontiers Award (2009) and Russell R Miller Award for Contributions to the Literature (2010), both from ACCP, the Southeastern Universities Research Association Distinguished Scientist Award (2015); AACP Volwiler Research Achievement Award (2016), the ACCP-Pharmacology Distinguished Scientist Award (2019), the ACCP Paul Parker Medal (2019), elected fellow of the American Association for the Advancement of Science (2020), the Rawls Palmer Progress in Medicine Award from the American Society for Clinical Pharmacology and Therapeutics (2021), and the Precision Medicine World Conference Luminary Award recipient (2021), among others.