Ryan Koski-Vacirca, MD, MPH
Instructor of Emergency MedicineDownloadHi-Res Photo
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Postdoctoral Fellow, National Clinician Scholars Program
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Instructor of Emergency Medicine
Postdoctoral Fellow, National Clinician Scholars Program
Biography
I am an emergency physician in the Yale School of Medicine's Department of Emergency Medicine and fellow in Yale's National Clinician Scholars Program. I completed medical school at Wake Forest School of Medicine and a Master of Public Health at the Johns Hopkins Bloomberg School of Public Health. My research interest is in using health services research as a tool to make health care more affordable and accessible for everyone. Outside of the hospital, I enjoy sundry exercise, sustainable agriculture, and cooking with family.
Last Updated on July 10, 2025.
Departments & Organizations
Education & Training
- Resident
- Yale New Haven Health System (2025)
- MD
- Wake Forest School of Medicine (2021)
- MPH
- Johns Hopkins Bloomberg School of Public Health (2020)
- BS
- Wake Forest University (2014)
Research
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Research at a Glance
Yale Co-Authors
Frequent collaborators of Ryan Koski-Vacirca's published research.
Publications Timeline
A big-picture view of Ryan Koski-Vacirca's research output by year.
Arjun Venkatesh, MD, MBA, MHS
Cameron Gettel, MD, MHS
Craig Rothenberg
Shu-Xia Li, PhD
Vivek Parwani, MD, FACEP
Alina Tsyrulnik, MD
11Publications
18Citations
Publications
2025
Emergency department visits among rural and urban older adults: disparities in ambulatory and emergency care sensitive conditions
Gettel C, Kitchen C, Rothenberg C, Song Y, Koski-Vacirca R, Schaffer K, Janke A, Mohr N, Greenwood-Ericksen M, Venkatesh A. Emergency department visits among rural and urban older adults: disparities in ambulatory and emergency care sensitive conditions. BMC Health Services Research 2025, 25: 975. PMID: 40707938, PMCID: PMC12291402, DOI: 10.1186/s12913-025-13161-2.Peer-Reviewed Original ResearchCitationsMeSH Keywords and ConceptsConceptsEmergency care-sensitive conditionsAmbulatory care sensitive conditionsACSC-related ED visitsED visit ratesED visitsSensitive conditionsED utilizationRural beneficiariesMedicare beneficiariesOlder adultsHigher oddsEmergency departmentMedicare Current Beneficiary Survey dataUrban Medicare beneficiariesUrban older adultsEmergency department visitsVisit ratesPolicy-based interventionsCross-sectional analysisLogistic regression modelsBackgroundOlder adultsHealthcare accessHealth characteristicsOutpatient careUrban counterparts
2023
Implementation of Text-message Reminders (Nudges) to Increase Emergency Medicine Resident Feedback
Sun W, Goldflam K, Coughlin R, Venkatesh A, Sangal R, Della-Giustina D, Koski-Vacirca R, Teresi R, He L, Tsyrulnik A. Implementation of Text-message Reminders (Nudges) to Increase Emergency Medicine Resident Feedback. Western Journal Of Emergency Medicine 2023, 24 DOI: 10.5811/westjem.61094.Peer-Reviewed Original ResearchEstimated reimbursement impact of COVID‐19 on emergency physicians
Venkatesh A, Janke A, Koski‐Vacirca R, Rothenberg C, Parwani V, Granovsky M, Burke L, Li S, Pines J. Estimated reimbursement impact of COVID‐19 on emergency physicians. Academic Emergency Medicine 2023, 30: 636-643. PMID: 36820470, DOI: 10.1111/acem.14700.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsNationwide Emergency Department SampleED visitsEmergency physiciansSecondary analysisCOVID-19Acute care utilizationEmergency Department SampleEmergency Department registryCOVID-19 pandemicHealth care servicesEmergency department sitesReimbursement impactCare utilizationBilling codesInsurance payerDepartment registryPrimary analysisCare servicesPhysiciansReimbursement lossHealth careStudy sampleVisitsPandemic-related lossReimbursement
2022
Trends In Treat-And-Release Emergency Care Visits With High-Intensity Billing In The US, 2006–19
Janke A, Gettel C, Koski-Vacirca R, Lin M, Kocher K, Venkatesh A. Trends In Treat-And-Release Emergency Care Visits With High-Intensity Billing In The US, 2006–19. Health Affairs 2022, 41: 1772-1780. PMID: 36469824, DOI: 10.1377/hlthaff.2022.00484.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsRelease ED visitsEmergency departmentED visitsNationwide Emergency Department SampleEmergency care visitsEmergency Department SampleProportion of visitsHealth care systemMore comorbiditiesCare visitsOlder patientsED careBilling practicesSerious diagnosisObservational studyUndifferentiated patientsPatient complexityCare servicesHealth statusCare systemVisitsPatientsEvolving roleReimbursement reformTreat9 Nationwide Reimbursement Impact of COVID-19 to Emergency Physicians: $6.6 Billion Loss in 2020
Venkatesh A, Janke A, Koski-Vacirca R, Rothenberg C, Parwani V, Granovsky M, Burke L, Li S, Pines J. 9 Nationwide Reimbursement Impact of COVID-19 to Emergency Physicians: $6.6 Billion Loss in 2020. Annals Of Emergency Medicine 2022, 80: s4-s5. PMCID: PMC9519215, DOI: 10.1016/j.annemergmed.2022.08.031.Peer-Reviewed Original Research
2021
Letters of Correspondence: COVID-19 and Student Advocacy, Medical Education, Surge Response, and Testing.
Koski-Vacirca R, Zaidi D, Macko L, Prasad T, Karamchandani RR, Singh S, Asimos AW, Chen F, Isaak RS, Steiner BD, Martinelli SM, Weissler EH, Kibbe MR, Mann JWF, Caulfield H, Harr C, Hildreth AN, Krahnert JF, Reinke CE, Snyder JR, Tuttle-Newhall JE, Wyatt J, Shortell CK. Letters of Correspondence: COVID-19 and Student Advocacy, Medical Education, Surge Response, and Testing. North Carolina Medical Journal 2021, 82: 83-86. PMID: 33397766, DOI: 10.18043/ncm.82.1.83.Peer-Reviewed Original ResearchAltmetricMeSH Keywords and ConceptsRulemaking For Health Care Affordability: Implementing The No Surprises Act
Koski-Vacirca R, Venkatesh AK. “Rulemaking For Health Care Affordability: Implementing The No Surprises Act, " Health Affairs Blog, November 2, 2021. DOI: 10.1377/hblog20211028.424036Peer-Reviewed Case Reports and Technical Notes
2020
Resilience in Health Care Financing
Murphy K, Koski-Vacirca R, Sharfstein J. Resilience in Health Care Financing. JAMA 2020, 324: 126-127. PMID: 32662852, DOI: 10.1001/jama.2020.10417.Peer-Reviewed Original ResearchCitationsAltmetricResilience in Health Care Financing.
Murphy K, Koski-Vacirca R, Sharfstein J. Resilience in Health Care Financing. JAMA Health Forum 2020, 1: e200614. PMID: 36218494, DOI: 10.1001/jamahealthforum.2020.0614.Peer-Reviewed Original ResearchAltmetric
2019
Ch. 16 - Physician Shortage and Physician Workforce Challenge, Emergency Medicine Advocacy Handbook
Koski-Vacirca R, VanderVinne N, Burmeister B. Ch. 16 - Physician Shortage and Physician Workforce Challenge. Emergency Medicine Advocacy Handbook 2019. ISBN 978-1-929854-53-0Books
Academic Achievements & Community Involvement
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Activities
activity EMRA Representative, ACEP Workforce Section
06/01/2018 - 06/01/2020Professional OrganizationsCommittee Member
Honors
honor GHHS Inductee
04/01/2019National AwardGold Humanism Honor SocietyDetailsUnited Stateshonor Robert R. Perz Scholar
05/01/2018Other AwardWake Forest School of MedicineDetailsUnited States
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