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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Two Decades of Medicare Payment Declines Associated with Worsening Patient Access Gaps

July 27, 2026 Press Release

A new study from the Neiman Institute found that the persistent declines in Medicare physician reimbursement are associated with widening disparities in access to care, with patients in rural communities, low-income areas, and disadvantaged neighborhoods falling further behind their more urban, affluent, and advantaged counterparts. The study, based on 4.7 million unique patients over the 2005-2023 period, was published in INQUIRY: The Journal of Health Care Organization, Provision, and Financing. Read More

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

August 4, 2026 Press Release

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

Neiman Data Tools

Other New Research

June 26, 2026 in Press Releases

Hospital Resources—Not Patient Need—Drive Stroke AI Tool Adoption Under Medicare

A new study published in the American Journal of Neuroradiology finds that adoption of artificial intelligence software for detecting large vessel occlusion in acute ischemic stroke when billed through Medicare's New Technology Add-On Payment program has grown but remains uneven, with use concentrated in larger, specialized hospitals and varying geographically. Read More
June 24, 2026 in Press Releases

Interventional Radiology Work has Become Increasingly Concentrated Among Fewer Radiologists

Radiologists performing no interventional radiology-related work increased from one-third in 2008 to one-half in 2023. These findings, based on a national Medicare analysis of 46,533 radiologists covering 476,688 radiologist years from 2008 to 2023 period, were published in the JVIR by the HPI in collaboration with IR experts. Read More
May 13, 2026 in Press Releases

AI for Pulmonary Embolism Detection Matches Radiologists in 97.8% of 32,000+ Real‑World CT Angiograms

An artificial intelligence algorithm for pulmonary embolism detection demonstrated high concordance with radiologist interpretations in a large, real-world study published today in Radiology: Artificial Intelligence. Read More
April 30, 2026 in Press Releases

Diagnostic Technology Advancements for Neuroendocrine Tumor Mapping Resulted in Dramatic Shifts in Access to Theranostics Care

A new study from the Neiman Institute found that the introduction of PET-based Gallium-68 DOTATATE/DOTATOC radiotracers for imaging neuroendocrine tumors created substantial differences in patient access during its first four years of use. Compared with the older imaging agent, Indium-111 pentetreotide (Octreoscan™), patients in small town-rural areas traveled 134.9 additional miles on average to access Gallium-68 DOTATATE/DOTATOC. The study, published in JACR, analyzed 3,365 claims for neuroendocrine tumor radiotracers. Read More
April 14, 2026 in Press Releases

CMS MIPS Quality Measures are “Topped Out” when Over 90% of Eligible Physicians Have Never Reported their Performance

New Neiman Institute research found that most Merit-Based Incentive Payment System quality measures designated as “topped out” by the Centers for Medicare & Medicaid Services were reported by only a small fraction of eligible physicians, suggesting these measures may not reflect consistently high performance across clinicians. 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

Two Decades of Medicare Payment Declines Associated with Worsening Patient Access Gaps

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

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

Hospital Resources—Not Patient Need—Drive Stroke AI Tool Adoption Under Medicare

Interventional Radiology Work has Become Increasingly Concentrated Among Fewer Radiologists

AI for Pulmonary Embolism Detection Matches Radiologists in 97.8% of 32,000+ Real‑World CT Angiograms

Diagnostic Technology Advancements for Neuroendocrine Tumor Mapping Resulted in Dramatic Shifts in Access to Theranostics Care

CMS MIPS Quality Measures are “Topped Out” when Over 90% of Eligible Physicians Have Never Reported their Performance

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