Harvey L. Neiman Health Policy Institute -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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Individual IR Focus and Evaluation and Management Services Facilitate Higher Complexity IR Practice

September 17, 2026 Press Release

A new study from the HPI found that both practice-level and radiologist-level IR specialization are associated with increasing procedural complexity, and nurse practitioners and physician assistants, through the provision of evaluation and management services, contributed to increased procedural complexity to the interventional radiologists they support. This practice-level analysis was published in JACR. Read More

Radiology Practices that Own Imaging Scanners are 17% Less Likely to Close or Consolidate with Another Practice

September 30, 2026 Press Release

A new study from HPI found that practices that perform both imaging scans and interpretation services were 17% less likely to close than practices that do not own imaging scanners. The study, based on 30,625 practice-years over the 2008-2021 period, was published in the Journal of the American College of Radiology. Read More

Neiman Data Tools

Other New Research

September 15, 2026 in Press Releases

AI Helps Radiologists Detect 39% More Brain Aneurysm Cases in Real-World Study

A new study published in JACR found that an artificial intelligence algorithm can meaningfully enhance brain aneurysm detection when used alongside radiologists. The findings provide important real-world evidence supporting AI as a clinical assistive tool for brain aneurysm detection. Read More
September 9, 2026 in Press Releases

COVID-19 Pandemic Accelerated Adoption of Shorter, Lower-Burden Breast Radiation Therapy, Medicare Study Finds

The COVID-19 pandemic accelerated the adoption of shorter-course radiation therapy for women with early-stage breast cancer, leading to reduced treatment burden and lower healthcare spending, according to a new study published in the American Journal of Clinical Oncology. Read More
September 1, 2026 in Press Releases

Study Finds Substantially Higher Imaging Use When Ordering Clinicians Interpret Their Own Imaging

A new study from the Neiman Institute found that the odds of imaging following an office visit were 188% higher when ordering clinician self-interpreted the imaging they ordered versus referring interpretation to a radiologist. Practices that routinely referred imaging to a radiologist also demonstrated lower imaging use following office visits. The study, based on 24.2 million Medicare office visits, was published in JACR. Read More
August 6, 2026 in Press Releases

New Study Finds DXA Osteoporosis Screening Declined 35% Among Medicare Beneficiaries

A new HPI study reveals a substantial decline in DXA testing among Medicare beneficiaries that was greatest in certain underserved groups. The findings raise concerns about missed opportunities to diagnose osteoporosis and prevent fractures and associated costs. The study analyzed nearly two decades of Medicare claims data from more than 5 million beneficiaries and found that use of DXA fell by 35% over the study period. Read More
August 4, 2026 in Press Releases

Imaging Interpretation Turnaround Time Continued to Increase in 2024, by 27%

A new study from the Neiman Institute found that the time between an imaging scan and its interpretation for office/hospital outpatient imaging increased 27% between 2023 and 2024. The study, based on 2.9 million office/hospital outpatient Medicare imaging studies, published in JACR, was an update to previous HPI study of turnaround times through 2023. Read More

In the News

A FDA-cleared AI tool shows 99.2% sensitivity for pulmonary embolism detection when used with radiologist readers — outperforming the algorithm operating alone, researchers have reported via @AuntMinnie

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

Individual IR Focus and Evaluation and Management Services Facilitate Higher Complexity IR Practice

Radiology Practices that Own Imaging Scanners are 17% Less Likely to Close or Consolidate with Another Practice

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

AI Helps Radiologists Detect 39% More Brain Aneurysm Cases in Real-World Study

COVID-19 Pandemic Accelerated Adoption of Shorter, Lower-Burden Breast Radiation Therapy, Medicare Study Finds

Study Finds Substantially Higher Imaging Use When Ordering Clinicians Interpret Their Own Imaging

New Study Finds DXA Osteoporosis Screening Declined 35% Among Medicare Beneficiaries

Imaging Interpretation Turnaround Time Continued to Increase in 2024, by 27%

In the News

A FDA-cleared AI tool shows 99.2% sensitivity for pulmonary embolism detection when used with radiologist readers — outperforming the algorithm operating alone, researchers have reported via @AuntMinnie

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