Harvey L. Neiman Health Policy Institute

Shaping the Future of Health Policy and Radiology for Better Patient Care

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.

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Practice Turnover Among Radiologists Increased 61% Over a Decade and is Linked to Clinical Workload

February 24, 2026 Press Release

A new study from the Neiman Institute found that practice turnover among radiologists increased 61% between 2013 and 2022. The study also found that turnover rates differed by gender, practice location, academic status, workload, and years of practice. The study, published in the Journal of the American College of Radiology, was based on 39,439 radiologists covering 280,692 practice years between 2013 and 2022. Read More

New Analysis Shows Rising Attrition in Every Radiology Subspecialty, 2014–2022

March 4, 2026 Press Release

A new study from HPI found that attrition (i.e., exit) from the radiology workforce increased for all subspecialties, but with varying magnitude. The study, published in AJR, was based on all Medicare radiologists who submitted claims between 2014 and 2022 and covered 159,490 radiologist-year observations for 29,770 radiologists practicing as subspecialists. Read More

Neiman Data Tools

Other New Research

January 21, 2026 in Press Releases

Pediatric Patients Exposed to Ionizing Radiation in Imaging at Higher Rates in Non-Children’s Hospitals than Children’s Hospitals

A new Neiman Institute study , performed with the American College of Radiology’s Pediatric Imaging Research Committee, highlights differences in imaging use among children that raise safety concerns and opportunities to reduce radiation exposure. The study analyzed over 5.4 million outpatient hospital encounters for pediatric Medicaid patients and found significant differences in imaging utilization between children’s hospitals and non‑children’s hospitals. Read More
January 6, 2026 in Press Releases

Neiman Health Policy Institute Opens 2026 Grant Applications to Advance Radiology Policy

The Neiman Health Policy Institute is now accepting proposals for its 2026 Neiman Institute Grants Program, offering up to $75,000 to fund research that informs health policy and radiology practice. Proposals are due March 3, 2026, at 8 p.m. ET. Read More
December 17, 2025 in Press Releases

Neiman Institute Research Earns Top Honors in Leading Radiology Journals

The Harvey L. Neiman Health Policy Institute is proud to announce that three of its research articles have been recognized with prestigious awards from leading radiology journals for their impact on policy, education, and practice management. "Recognition from leading journals like JACR and AJR reinforces the importance of our mission to advance evidence-based decision-making in radiology." Read More
December 5, 2025 in Press Releases

New Study Reveals Millions of Liters of Medical Imaging Contrast Media Contribute to Environmental Pollution

A new study published in JAMA Network Open highlights the significant environmental footprint of medical imaging contrast agents, finding that Medicare patients alone received 13.5 billion milliliters of contrast media between 2011 and 2024. Conducted by a team of researchers, the study underscores the urgent need to address the environmental impact of these widely used diagnostic materials. Read More
November 13, 2025 in Press Releases

CT Colonography Most Cost-Effective Colorectal Cancer Screening Strategy for Black Adults

New study finds CT colonography delivers greater value than colonoscopy and FIT for Black adults under real-world screening adherence, supporting expanded use Reston, VA — A new study published in Cancer Medicine by the Harvey L. Neiman Health Policy Institute and Northwell Health demonstrates that CT colonography (CTC) is the most cost-effective colorectal cancer screening […] Read More

In the News

HPI: Kids are exposed to more imaging radiation at non-children's hospitals via @AuntMinnie

Repeat imaging rates higher when scans are interpreted by nurse practitioners, physician assistants via @RadiologyBiz

New research from @NeimanHPI found that the number of pediatric radiologists in the U.S. continues to decline via @AuntMinnie

Unnecessary imaging wastes $12B a year and uses enough electricity to power a small town via @RadiologyBiz

Researchers find that living in a neighborhood with higher vulnerability to environmental heat predicted worse stroke severity, offering a new metric for stroke risk amidst climate change via @RadiologyACR

Shaping the Future of Health Policy and Radiology for Better Patient Care

Practice Turnover Among Radiologists Increased 61% Over a Decade and is Linked to Clinical Workload

New Analysis Shows Rising Attrition in Every Radiology Subspecialty, 2014–2022

Neiman Data Tools

Neiman Almanac 2.0

Medicaid vs. Medicare Reimbursement By State

Cancer Disparity Maps

Neiman Imaging Types of Service (NITOS)

Inpatient Cost Evaluation Tool (ICE-T)

Breast Screening Bundle Tool

Identification of Academic Radiology Practices

Medicare Beneficiary Enrollment Numbers: A Research Tool

Other New Research

Pediatric Patients Exposed to Ionizing Radiation in Imaging at Higher Rates in Non-Children’s Hospitals than Children’s Hospitals

Neiman Health Policy Institute Opens 2026 Grant Applications to Advance Radiology Policy

Neiman Institute Research Earns Top Honors in Leading Radiology Journals

New Study Reveals Millions of Liters of Medical Imaging Contrast Media Contribute to Environmental Pollution

CT Colonography Most Cost-Effective Colorectal Cancer Screening Strategy for Black Adults

In the News

HPI: Kids are exposed to more imaging radiation at non-children's hospitals via @AuntMinnie

Repeat imaging rates higher when scans are interpreted by nurse practitioners, physician assistants via @RadiologyBiz

New research from @NeimanHPI found that the number of pediatric radiologists in the U.S. continues to decline via @AuntMinnie

Unnecessary imaging wastes $12B a year and uses enough electricity to power a small town via @RadiologyBiz

Researchers find that living in a neighborhood with higher vulnerability to environmental heat predicted worse stroke severity, offering a new metric for stroke risk amidst climate change via @RadiologyACR

Radiology providers should add contrast-enhanced mammography to address breast MRI access gaps via @RadiologyBiz

Radiology experts develop tool for predicting whether patients will require advanced imaging via @RadiologyBiz

IDR process financially unfeasible for radiologists via @AuntMinnie

Radiologists rarely break even in No Surprises Act payment disputes, new study finds via @RadBiz

Ultrasound use shifts among radiologists, nonphysician practitioners via @AuntMinnie