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The mission of the Harvey L. Neiman Health Policy Institute® is to establish foundational evidence for health policy and radiology practice that promotes the effective and efficient use of health care resources and improves patient care.

Published Papers

Peer-reviewed scientific papers authored by the Neiman Institute investigators, fellows, and affiliates.

Medicare Volume Growth and Shift in Payments From Physicians to Non-Physician Practitioners Under Statutory Budget Neutrality

Volume increases, inflation, statutory freezes in physician payments, and the budget neutrality requirement for the Medicare Physician Fee Schedule have resulted in persistent inflation-adjusted conversion factor decreases. This study aimed to determine if relative value unit (RVU) volume increases on a per beneficiary basis has counteracted conversion factor decreases and inflation to maintain Medicare reimbursement per beneficiary, overall and across specialties. Full Article

Eric W. Christensen, PhD, Gregory N. Nicola, MD, Elizabeth Y. Rula, PhD, Lauren P. Nicola, MD, Joshua A. Hirsch, MD. 2024. "Medicare Volume Growth and Shift in Payments From Physicians to Non-Physician Practitioners Under Statutory Budget Neutrality," INQUIRY: The Journal of Health Care Organization, Provision, and Financing


A series of policy briefs and research columns focusing on topical issues in imaging health policy.

January 31, 2024

Evidence that Paves The Way for a Brighter Future in Radiology

The Harvey L. Neiman Health Policy Institute is a differentiating asset of the ACR, positioning the College at the forefront in advocacy by contributing the scientific evidence needed to inform health policy. The investment the ACR makes in advancing this mission keeps the College at the forefront of the field Read More


Infographics produced primarily with Neiman Almanac data to better understand current health care issues.

March 12, 2024

Disparities in Provider Ordering Practices of Image-Guided Interventions and Surgery for Patients With Low Back Pain: A Cohort Study 

This study assessed individual- and neighborhood-level sociodemographic factors associating with providers’ ordering of nonpharmacologic treatments for patients with low back pain (LBP), specifically physical therapy, image-guided interventions, and lumbar surgery. Authors: Miriam E. Peckham, MD, Lubdha M. Shah, MD, MS, Huong D. Meeks, PhD, MStat, MPH, Alison Fraser, MSPH, Carlos Galvao, BS, Ghazaleh Safazadeh, MPH, View Infographic