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The Harvey L. Neiman Health Policy Institute® studies the value and role of radiology in evolving health care delivery and payment systems, including quality based approaches to care and the impact of medical imaging on overall health care costs. Neiman Institute research provides a foundation for evidence-based imaging policy to improve patient care and bolster efficient, effective use of health care resources.

Published Papers

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

Radiologist-Practice Separation: Recent Trends and Characteristics

The purpose of this study is to assess recent trends and characteristics in radiologist-practice separation across the United States. Using the Medicare Physician Compare and Medicare Physician and Other Supplier Public Use File data sets, the researchers linked all radiologists to associated group practices annually between 2014 and 2018 and assessed radiologist-practice separation over a variety of physician and group characteristics. Multivariate logistic regression modeling was used to estimate the likelihood of radiologist-practice separation. Full Article

Stefan Santavicca, MS , Danny R. Hughes, PhD, Howard B. Fleishon, MD, MMM, Frank Lexa, MD, MBA Eric Rubin, MD, Andrew B. Rosenkrantz, MD, MPA, Richard Duszak, MD. 2020. "Radiologist-Practice Separation: Recent Trends and Characteristics," Journal of American College of Radiology (JACR)


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

August 10, 2017

Harvey L. Neiman Health Policy Institute™: 2016 Year in Review

The Harvey L. Neiman Health Policy Institute™ annual report for Fiscal Year (FY) 2016. The report highlights several key accomplishments, including the launch of the Inpatient Cost-Evaluation Tool (ICE-T), a Journal of the American College of Radiology (JACR) report on a proposed breast cancer screening bundle and numerous other scientific achievements. Read More


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

November 29, 2020

The Neiman Institute COVID-19 Studies

To understand the impact of COVID-19 on radiology in a variety of care-delivery settings, the Harvey L. Neiman Health Policy Institute (HPI®) initiated a series of studies from an integrated healthcare system in New York and community radiology practices, and analyzed data from a national survey of radiology practices. View the infographic to see how COVID-19 affected imaging volumes and radiology practices. View Infographic