Research theme

Coverage and Medicaid

How eligibility rules, work requirements and insurance status change who is screened, diagnosed and treated.

9 articles, newest first

  1. Projected Cancer Screening and Outcomes Under the 2025 Federal Medicaid Eligibility Restrictions

    Shubeck SP, Diaz A. JAMA Oncol. 2026.

    More on this study: The screenings that won’t happen

  2. Expanding Access to High-Quality Cancer Care Through Policy-California Cancer Care Equity Act

    Diaz A, Loehrer AP, Pawlik TM. JAMA Oncol. 2024.

  3. California's State Insurance Gender Nondiscrimination Act and Utilization of Gender-Affirming Surgery-Reply

    Schoenbrunner AR, Beckmeyer A, Diaz A. JAMA. 2023. Letter

  4. Association Between California's State Insurance Gender Nondiscrimination Act and Utilization of Gender-Affirming Surgery

    Schoenbrunner AR, Beckmeyer A, Kunnath N, …, Diaz A. JAMA. 2023.

    Among people diagnosed with gender dysphoria, the 2013 implementation of California’s Insurance Gender Nondiscrimination Act was associated with a significant increase in the use of gender-affirming surgery in California compared with Washington and Arizona.

  5. Impact of Opioid Restriction Legislation on Prescribing Practices for Outpatient Plastic and Reconstructive Surgery

    O'Brien AL, Krasniak PJ, Schroeder MJ, Desai MN, Diaz A, Chetta MD. Plast Reconstr Surg. 2022.

    At one high-volume academic center, a state law limiting opioid prescriptions after surgery was associated with fewer opioids prescribed on the day of outpatient plastic surgery, without an increase in the need for refills.

  6. Association of Dual Medicare and Medicaid Eligibility With Outcomes and Spending for Cancer Surgery in High-Quality Hospitals

    Taylor K, Diaz A, Nuliyalu U, Ibrahim AM, Nathan H. JAMA Surg. 2022.

    Among Medicare patients having cancer surgery, those also eligible for Medicaid more often went to a care facility after discharge and had higher spending, even at the highest-quality hospitals, where outcome gaps were smaller.

  7. Impact of the Affordable Care Act on Presentation, Treatment, and Outcomes of Intrahepatic Cholangiocarcinoma

    Lima HA, Moazzam Z, Endo Y, …, Diaz A, et al. J Gastrointest Surg. 2022.

    Among patients with a rare bile duct cancer in the liver, the Affordable Care Act era was associated with more early-stage diagnoses and surgery, and Medicaid expansion with better survival, but racial disparities persisted.

  8. Utilization of High-Volume Hospitals for High-Risk Cancer Surgery in California Following Medicaid Expansion

    Diaz A, Chavarin D, Paredes AZ, Pawlik TM. J Gastrointest Surg. 2020.

    After California expanded Medicaid, the chance of having high-risk cancer surgery at a high-volume hospital rose more for Medicaid patients than for other patients, but complications, in-hospital deaths and readmissions did not significantly improve.

  9. Insurance status and high-volume surgical cancer: Access to high-quality cancer care

    Diaz A, Pawlik TM. Cancer. 2020. Editorial