Colbey Ricklefs, MD


  1. Nagata JM, Caffrey A, Heuer A, Murillo KB, Helmer CK, Frimpong I, Ricklefs C, Al-Shoaibi AA, Testa A, Brindis CD, Santos GM, Baker FC. Social media use, smoking expectancies, and nicotine experimentation in early adolescents: A prospective cohort study. The American journal on addictions 2026. PMID: 41667400


  2. Nagata JM, Helmer CK, Frimpong I, Beltran Murillo K, Heuer AW, Huang OH, Li EJ, Ricklefs C, Ganson KT, Testa A, He J, Baker FC. Social epidemiology of multidimensional sleep health in early adolescence. Pediatric research 2025. PMID: 41315723


  3. Nagata JM, Caffrey A, Nguyen ND, Nayak S, Frimpong I, Helmer CK, Ricklefs C, Al-Shoaibi AA, Testa A, Brindis CD, Santos GM, Baker FC. Cannabis expectancies mediate the association between social media use and cannabis experimentation in early adolescents: A prospective cohort study. Drug and alcohol dependence 2025. PMID: 41197602


  4. Nagata JM, Li EJ, Huang OH, Ricklefs C, Ganson KT, Testa A, Scheffler A, Sugrue L, Baker FC. Cyberbullying and Sleep Disturbances in Adolescents: An Updated Evidence Review. Academic pediatrics 2025. PMID: 40998045


  5. Lindley AR, Ricklefs C, Kost A, Patterson DG, Evans DV, Sturges D, Bennett IM, Cawse-Lucas J. Changes in Diversity, Equity, and Inclusion Activities of Family Medicine Departments. Volume 57 of Issue 1. Family medicine 2024. PMID: 39777662


  6. Ricklefs C, Balasubramanian P, Ganson KT, Testa A, Kiss O, Baker FC, Nagata JM. Gender Identity Disparities in Early Adolescent Sleep: Findings from the Adolescent Brain Cognitive Development Study. LGBT health 2024. PMID: 39253855


  7. Ho T, Ricklefs C. Healthcare for Sexual and Gender Minority Adolescents. Volume 51 of Issue 4. Primary care 2024. PMID: 39448102



  8. Sequeira GM, Kahn NF, Ricklefs C, Collin A, Asante PG, Pratt W, Christakis D, Richardson LP. Barriers Pediatric PCP's Identify To Providing Gender-Affirming Care For Adolescents. Volume 73 of Issue 2. The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2023. PMID: 37294258


  9. Ricklefs C. PrEP'aring for Impact: Implicit Bias and Imperfect Billing Codes. Volume 55 of Issue 2. Family medicine 2023. PMID: 36787520


  10. Jang J, Colletti AA, Ricklefs C, Snyder HJ, Kardonsky K, Duggan EW, Umpierrez GE, O'Reilly-Shah VN. Implementation of App-Based Diabetes Medication Management: Outpatient and Perioperative Clinical Decision Support. Volume 21 of Issue 12. Current diabetes reports 2021. PMID: 34902056