Our Publications

Below are all available peer-reviewed research publications authored by Dr. Amol S. Navathe, MD, PhD, The Parity Center, and/or our associated collaborators.

Bundled Payments—Looking Beyond the Episode

Read Publication JAMA Intern Med

In this article by Yuvaram Reddy, Sri Lekha Tummalapalli, and Amol Navathe, the authors cover the state of Alternative Payment Models (APMs) and the value they provide towards the goal of controlling Medicare costs, in relation to a recent publication by Keating et al.

Reddy YNV, Tummalapalli SL, Navathe AS. Bundled Payments—Looking Beyond the Episode. JAMA Intern Med. Published online April 27, 2026. doi:10.1001/jamainternmed.2026.1082

Comparison of Alternative Policy Definitions for Safety-Net Ambulatory Practices

Read Publication JAMA Health Forum

In this paper from The Parity Center and in collaboration with Dr. Joshua Liao, the authors compared two definitions of ambulatory safety net and investigated the extent to which those definitions of safety-net practices overlap. The authors found that alternative definitions of the ambulatory safety-net yielded nonoverlapping groups of practices, which may complicate efforts to target these practices for funding purposes.

Liao JM, Browne DS, Zhao Y, Navathe AS, Kilaru AS. Comparison of Alternative Policy Definitions for Safety-Net Ambulatory Practices. JAMA Health Forum. 2026;7(4):e260322. doi:10.1001/jamahealthforum.2026.0322

Rethinking Hospital-at-Home Policy to Achieve Scale and Impact

Read Publication JAMA Internal Medicine

In this Viewpoint from JAMA Internal Medicine, Deputy Director Austin Kilaru along with his coauthors discuss the future of the Hospital at Home program, potential directions the program can be taken, and what pitfalls to avoid in the programs renewal.

Kilaru AS, Landon S, D’Souza F, Burke RE. Rethinking Hospital-at-Home Policy to Achieve Scale and Impact. JAMA Intern Med. Published online April 06, 2026. doi:10.1001/jamainternmed.2026.0389

The Ambulatory Specialty Model: The Next Step Toward Engaging Specialists In Accountable Care

Read Publication Health Affairs Forefront

In this Health Affairs Forefront, authors Joshua Liao and Amol Navathe discuss the upcoming Ambulatory Specialty Model (ASM) which seeks to address specialist engagement in accountable care models.

Aligning AI Payment Policy With Desired Outcomes Rather Than Inputs May Require Customized Pathways

Read Publication Health Affairs

In this Health Affairs Perspective article,  authors Sita Kottilil and Amol Navathe investigate the tension between input-based prices and outcome-based care by comparing and contrasting payment for AI with the approach for prescription drug pricing and propose a classification system to distinguish between the types of AI that differ in their implications for clinician time and cost. 

Aligning AI Payment Policy With Desired Outcomes Rather Than Inputs May Require Customized Pathways, Sita K. Kottilil and Amol S. Navathe, Health Affairs 2026 45:1, 22-25

Nudges to Clinicians and Patients for Influenza Vaccines During Visits

Read Publication JAMA Intern Med

In this randomized clinical trial of 80 039 patients across 48 clinics, the multicomponent nudge to clinicians and patients resulted in a 5.1–percentage point increase in vaccine completion.

Mehta SJ, Waddell KJ, Linn KA, et al. Nudges to Clinicians and Patients for Influenza Vaccines During Visits: The BE IMMUNE Randomized Clinical Trial. JAMA Intern Med. 2026;186(3):304–310. doi:10.1001/jamainternmed.2025.7133

Transplantation in Mandatory Kidney Payment Models: Understanding the Potential Influence of the ESRD Treatment Choices Model on the Increasing Organ Transplant Access Model

Read Publication Kidney Medicine

This cohort study of IOTA and ETC/IOTA ‘overlap’ centers analyzed differences between the two groups. Through their findings the authors argue that more dedicated research is needed to understand whether overlapping payment structures are beneficial for kidney treatment.
 

Reddy YNV, Tummalapalli SL, Potluri VS, Mussell A, Adler JT, Navathe AS, Transplantation in Mandatory Kidney Payment Models: Understanding the Potential Influence of the ESRD Treatment Choices Model on the Increasing Organ Transplant Access Model, Kidney Medicine (2025), doi: https://doi.org/10.1016/j.xkme.2025.101177.

Changes in Health Care Utilization and Low-Value Service Use After Risk-Based Contract Adoption in Medicare Advantage

Read Publication JAMA Intern Med

In this cohort study of health care organizations voluntarily transitioning to risk-based payment contracts, contract transition was not consistently associated with differential changes in utilization or low-value service use relative to organizations that did not change contract type.

Schwartz AL, Kim S, Chhatre S, et al. Changes in Health Care Utilization and Low-Value Service Use After Risk-Based Contract Adoption in Medicare Advantage. JAMA Intern Med. 2026;186(1):98–107. doi:10.1001/jamainternmed.2025.5917

Unfairness toward rural beneficiaries in Medicare's hierarchical conditions categories score

Read Publication Health Affairs Scholar

In this study, the authors investigated how related HCC scores are to mortality, a more objective indicator of clinical risk state, and whether that relationship differs between rural and urban populations. They examined calibration of the HCC spending model by calculating the predicted-to-observed spending ratio within deciles of the HCC score. They then compared urban and rural beneficiaries’ clinical risk by comparing observed mortality rates within deciles. Our results demonstrate that the HCC model underpredicts mortality, while overpredicting spending, for rural beneficiaries. In contrast, it is well-calibrated for urban beneficiaries. These findings suggest that risk models based on HCCs may systematically disadvantage rural beneficiaries because HCC-based risk-adjusted spending may not fully account for baseline clinical risk.

Ravi B Parikh, Kristin A Linn, Junning Liang, Sae-Hwan Park, Torrey Shirk, Deborah S Cousins, Caleb Hearn, Matthew Maciejewski, Amol S Navathe, Unfairness toward rural beneficiaries in Medicare's hierarchical conditions categories score, Health Affairs Scholar, Volume 3, Issue 9, September 2025,

Comparative Evaluation of Difference in Differences Methods for Staggered Adoption Interventions

Read Publication arXiv

In this paper the authors provide a comprehensive review of the staggered adoption setting and a selection of DiD methods suitable for the context of a payment program implemented by a healthcare provider in Hawaii. They begin with a theoretical overview of these methods, followed by a simulation study designed to resemble the characteristics of their application, where the intervention is implemented at the cluster level. Their results show that the current methods tend to under-perform when the number of clusters is small, but improve as the number of clusters increases. They then applied the methods to evaluate the real-world payment program intervention and offer practical recommendations for researchers implementing DiD methods for staggered adoption settings. Finally, they translate their findings into practical guidance for applied researchers choosing among DiD methods for staggered adoption settings.

Ulloa-Pérez E, Bair EF, Navathe AS, Linn KA. Comparative Evaluation of Difference in Differences Methods for Staggered Adoption Interventions. arXiv preprint arXiv:2508.14365. 2025 Aug 20.