Ryan N. Hansen

2.8k total citations · 1 hit paper
35 papers, 2.1k citations indexed

About

Ryan N. Hansen is a scholar working on Public Health, Environmental and Occupational Health, Economics and Econometrics and Geriatrics and Gerontology. According to data from OpenAlex, Ryan N. Hansen has authored 35 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Public Health, Environmental and Occupational Health, 9 papers in Economics and Econometrics and 6 papers in Geriatrics and Gerontology. Recurrent topics in Ryan N. Hansen's work include Opioid Use Disorder Treatment (12 papers), Health Systems, Economic Evaluations, Quality of Life (8 papers) and Pharmaceutical Practices and Patient Outcomes (6 papers). Ryan N. Hansen is often cited by papers focused on Opioid Use Disorder Treatment (12 papers), Health Systems, Economic Evaluations, Quality of Life (8 papers) and Pharmaceutical Practices and Patient Outcomes (6 papers). Ryan N. Hansen collaborates with scholars based in United States, United Kingdom and Netherlands. Ryan N. Hansen's co-authors include Sean D. Sullivan, Emily Beth Devine, Christina Bougatsos, Ian Blazina, Roger Chou, Richard A. Deyo, Judith A. Turner, Tracy Dana, Jennifer L. Wilson‐Norton and Nathan Lawless and has published in prestigious journals such as JAMA, SHILAP Revista de lepidopterología and Annals of Internal Medicine.

In The Last Decade

Ryan N. Hansen

35 papers receiving 2.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The Effectiveness and Risks of Long-Term Opioid Therapy for Chronic Pain: A Systematic Review for a National Institutes of Health Pathways to Prevention Workshop

2015 1.2k citations Emily Beth Devine, Ryan N. Hansen et al. profile →

Peers

Ryan N. Hansen

PHEOH

APM

PHARM

PPCH

PHYSI

Ajay Manhapra United States

Dale Rublee United States

Gráinne Cousins Ireland

Judy A. Staffa United States

Mark T. Holdsworth United States

Joanne Reid United Kingdom

Darshak Sanghavi United States

Julie L. Cunningham United States

Sharon M. Weinstein United States

Jason W Boland United Kingdom

Ajay Manhapra United States

Ryan N. Hansen

774 ×0.7

PHEOH

277 ×0.3

APM

178 ×0.3

PHARM

188 ×0.6

PPCH

92 ×0.3

PHYSI

Citations per year, relative to Ryan N. Hansen Ryan N. Hansen (= 1×) peers Ajay Manhapra

Countries citing papers authored by Ryan N. Hansen

Since Specialization

Citations

This map shows the geographic impact of Ryan N. Hansen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryan N. Hansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryan N. Hansen more than expected).

Fields of papers citing papers by Ryan N. Hansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan N. Hansen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryan N. Hansen. The network helps show where Ryan N. Hansen may publish in the future.

Co-authorship network of co-authors of Ryan N. Hansen

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan N. Hansen. A scholar is included among the top collaborators of Ryan N. Hansen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryan N. Hansen. Ryan N. Hansen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Green, Traci C., et al.. (2025). Secret Shopping to Assess Real-World Access to Over-The-Counter Naloxone in Community Pharmacies. Drug and Alcohol Dependence. 267. 112165–112165. 1 indexed citations

Hernandez, Inmaculada, Sean D. Sullivan, Ryan N. Hansen, & A. Mark Fendrick. (2024). Cheaper is not always better: Drug shortages in the United States and a value-based solution to alleviate them. Journal of Managed Care & Specialty Pharmacy. 30(7). 719–727. 3 indexed citations

Sullivan, Sean D., et al.. (2024). Drugs anticipated to be selected for the Medicare Drug Price Negotiation Program in 2025. Journal of Managed Care & Specialty Pharmacy. 30(11). 1203–1210. 2 indexed citations

Hernandez, Inmaculada, et al.. (2023). Reimbursement to Pharmacies for Generic Drugs by Medicare Part D Sponsors. JAMA. 330(24). 2390–2390. 3 indexed citations

Green, Traci C., et al.. (2022). Commentary Article: Study Protocol for the Respond to Prevent Study: A Multi-State Randomized Controlled Trial to Improve Provision of Naloxone, Buprenorphine and Nonprescription Syringes in Community Pharmacies. Substance Abuse. 43(1). 901–905. 19 indexed citations

Pocobelli, Gaia, Ryan N. Hansen, Robert Wellman, et al.. (2021). Obstructive sleep apnea and risk of motor vehicle accident. Sleep Medicine. 85. 196–203. 13 indexed citations

Wolf, Jayanthi, et al.. (2020). The impact of export regulations on recombinant viral vaccine development for emerging infectious diseases. Vaccine. 38(46). 7198–7200. 1 indexed citations

Bacci, Jennifer L., et al.. (2018). The effects of vaccination forecasts and value-based payment on adult immunizations by community pharmacists. Vaccine. 37(1). 152–159. 19 indexed citations

Korff, Michael Von, Kathleen Saunders, Sascha Dublin, et al.. (2018). Impact of Chronic Opioid Therapy Risk Reduction Initiatives on Opioid Overdose. Journal of Pain. 20(1). 108–117. 7 indexed citations

10.

Korff, Michael Von, Rod Walker, Kathleen Saunders, et al.. (2017). Prevalence of prescription opioid use disorder among chronic opioid therapy patients after health plan opioid dose and risk reduction initiatives. International Journal of Drug Policy. 46. 90–98. 29 indexed citations

11.

Gold, Laura S., et al.. (2016). Healthcare Costs and Resource Utilization in Patients with Infantile Spasms Treated with H.P. Acthar Gel®. Advances in Therapy. 33(8). 1293–1304. 6 indexed citations

12.

Hansen, Ryan N., Rod Walker, Susan M. Shortreed, et al.. (2016). Impact of an opioid risk reduction initiative on motor vehicle crash risk among chronic opioid therapy patients. Pharmacoepidemiology and Drug Safety. 26(1). 47–55. 8 indexed citations

13.

Korff, Michael Von, Sascha Dublin, Rod Walker, et al.. (2015). The Impact of Opioid Risk Reduction Initiatives on High-Dose Opioid Prescribing for Patients on Chronic Opioid Therapy. Journal of Pain. 17(1). 101–110. 50 indexed citations

14.

Hoogendoorn, Martine, Talitha Feenstra, Yumi Asukai, et al.. (2014). Cost-Effectiveness Models for Chronic Obstructive Pulmonary Disease: Cross-Model Comparison of Hypothetical Treatment Scenarios. Value in Health. 17(5). 525–536. 37 indexed citations

15.

Bloudek, Lisa, et al.. (2013). Cost-effectiveness of onabotulinumtoxinA for prophylaxis of headaches in adults with chronic migraine in Canada. Value in Health. 16(3). A105–A105. 2 indexed citations

16.

Sullivan, Sean D., Josh J. Carlson, & Ryan N. Hansen. (2012). Comparative effectiveness research in the United States: a progress report. Journal of Medical Economics. 16(2). 295–297. 2 indexed citations

17.

Devine, Emily Beth, Ryan N. Hansen, Jennifer L. Wilson‐Norton, et al.. (2010). The impact of computerized provider order entry on medication errors in a multispecialty group practice. Journal of the American Medical Informatics Association. 17(1). 78–84. 127 indexed citations

18.

Hansen, Ryan N., Gerry Oster, John Edelsberg, George Woody, & Sean D. Sullivan. (2010). Economic Costs of Nonmedical Use of Prescription Opioids. Clinical Journal of Pain. 27(3). 194–202. 148 indexed citations

19.

Devine, Emily Beth, William Hollingworth, Ryan N. Hansen, et al.. (2009). Electronic Prescribing at the Point of Care: A Time–Motion Study in the Primary Care Setting. Health Services Research. 45(1). 152–171. 52 indexed citations

20.

Hollingworth, William, Emily Beth Devine, Ryan N. Hansen, et al.. (2007). The Impact of e-Prescribing on Prescriber and Staff Time in Ambulatory Care Clinics: A Time-Motion Study. Journal of the American Medical Informatics Association. 14(6). 722–730. 90 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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