The State Medicare Policy Atlas on Syam Adusumilli

California

Sun, 15 Mar 2026 00:00:00 +0000

California is where every Medicare policy debate plays out at a scale that makes local outcomes nationally consequential. With 7.05 million Medicare beneficiaries as of 2026, more than any other state, California is the market where the largest MA plans have the most enrollment at risk from rate compression, where D-SNP integration is most structurally complex, where state legislative action most frequently establishes the template for federal regulation, and where the gap between the policy ambition of Sacramento and the beneficiary experience in the Central Valley is widest. No national Medicare strategy is credible if it does not account for how it functions in California.

Summary: California

Sun, 15 Mar 2026 00:00:00 +0000

California’s 7.05 million Medicare beneficiaries make it the largest state-level Medicare market in the country, and the state where every major MA policy question, from rate compression to D-SNP integration to language access, plays out at a scale that makes local outcomes nationally consequential. The statewide MA penetration rate exceeds 55 percent, but that number conceals five distinct sub-markets ranging from the hyper-competitive urban corridors of Southern California and the Bay Area to the Central Valley and North Coast counties where one or zero MA plans are available and beneficiaries are in Original Medicare by default.

Oregon and Washington

Sun, 15 Mar 2026 00:00:00 +0000

Oregon and Washington share a Pacific Northwest political culture, a commitment to health system integration visible in their respective Medicaid program designs, and a set of health policy ambitions that are among the most progressive in the country. They do not share implementation capacity. Oregon’s Coordinated Care Organization model is among the most innovative Medicaid structures anywhere in the United States. Washington’s Health Care Authority has built a sophisticated administrative infrastructure for Medicaid managed care. Both states contain rural and frontier populations where the integration infrastructure that exists in Portland and Seattle produces almost nothing in terms of beneficiary experience. Both are WISeR pilot states, meaning Original Medicare beneficiaries in each state now face prior authorization requirements that went into effect January 1, 2026, creating an immediate navigation demand in markets where counseling infrastructure is concentrated in the metropolitan core.

Summary: Oregon and Washington

Sun, 15 Mar 2026 00:00:00 +0000

Oregon and Washington share a Pacific Northwest political culture and a commitment to health system integration visible in their Medicaid program designs, but they do not share implementation capacity. Both states have progressive dual eligible integration aspirations, sophisticated state agencies, and delivery system infrastructure concentrated in their metropolitan cores. Both contain rural and frontier populations where that infrastructure produces almost nothing in terms of beneficiary experience. Washington is a WISeR pilot state as of January 2026, adding prior authorization requirements for Original Medicare beneficiaries in a market where counseling infrastructure is thin outside the Puget Sound corridor.

Colorado and Utah

Sun, 15 Mar 2026 00:00:00 +0000

Colorado and Utah share a Mountain West geography, a frontier population distribution that makes most health policy discussions irrelevant to the half of each state that lives outside the metropolitan core, and a political culture that is conservative by Pacific Coast standards but internally varied in ways that affect Medicare policy implementation. Colorado has a politically progressive metro core along the Front Range governing a state that is 40 percent rural by geography. Utah has a politically dominant majority religion whose community health infrastructure and distinctive health behavior profile shape the Medicare market in ways that standard policy analysis rarely accounts for. Both states have approximately one million Medicare beneficiaries. Both face the reality that the most sophisticated delivery system innovations in the Mountain West stop at the edge of the metropolitan area.

Summary: Colorado and Utah

Sun, 15 Mar 2026 00:00:00 +0000

Colorado and Utah share a Mountain West geography and a frontier population distribution that makes most health policy discussions irrelevant to the half of each state that lives outside the metropolitan core. Both states have approximately one million Medicare beneficiaries. Both contain delivery system innovations that stop at the edge of the metropolitan area. Colorado has a politically progressive metro core along the Front Range governing a state that is 40 percent rural by geography. Utah has a politically dominant majority religion whose community health infrastructure and health behavior profile shape the Medicare market in ways that standard policy analysis rarely accounts for.

Arizona and Nevada

Sun, 15 Mar 2026 00:00:00 +0000

Arizona and Nevada are the Sun Belt’s Medicare growth markets. Both states have Medicare populations expanding faster than the national average, driven by retiree in-migration that concentrates beneficiaries in metropolitan areas while leaving vast rural and frontier geographies medically underserved. Arizona has 1.52 million Medicare beneficiaries and a Medicaid program, AHCCCS, that operates under a managed care structure unlike any other state’s. Nevada has a smaller but rapidly growing Medicare population and a health system infrastructure that remains thin relative to its enrollment growth. Both are WISeR pilot states as of January 2026, meaning their Original Medicare beneficiaries are now subject to prior authorization requirements that introduce a new layer of administrative complexity into markets that were already navigating rate compression, plan exits, and the unresolved question of how to serve the Native American Medicare population at the intersection of IHS and federal payment reform.

Summary: Arizona and Nevada

Sun, 15 Mar 2026 00:00:00 +0000

Arizona and Nevada are the Sun Belt’s Medicare growth markets, both expanding faster than the national average through retiree in-migration that concentrates beneficiaries in metropolitan areas while leaving vast rural geographies medically underserved. Arizona has 1.52 million Medicare beneficiaries and a Medicaid program, AHCCCS, unlike any other state’s. Nevada has a smaller but rapidly growing Medicare population and health system infrastructure that remains thin relative to enrollment growth. Both are WISeR pilot states as of January 2026, meaning their Original Medicare beneficiaries face prior authorization requirements that add administrative complexity in markets already contending with rate compression, plan exits, and the unresolved question of how to serve the Native American Medicare population at the IHS-federal payment reform intersection.

Florida and Texas

Sun, 15 Mar 2026 00:00:00 +0000

Florida and Texas are where Medicare’s scale problem is most visible. Florida has approximately 4.8 million Medicare beneficiaries. Texas has approximately 4.2 million. Together they account for roughly 14 percent of the entire Medicare population. Both states have highly competitive MA markets in their urban centers. Both face structural fragmentation between those urban markets and the rural, exurban, and border populations that represent a different Medicare reality entirely. Both have refused Medicaid expansion, narrowing the dual eligible pipeline and leaving their low-income Medicare populations with less Medicaid protection than equivalent populations in expansion states. And both are now at the center of the MA profitability reckoning that is producing plan exits, benefit contractions, and forced disenrollment at rates not seen since the program began its two-decade growth trajectory.

Summary: Florida and Texas

Sun, 15 Mar 2026 00:00:00 +0000

Florida and Texas together account for roughly 14 percent of the entire Medicare population: 4.8 million beneficiaries in Florida, 4.2 million in Texas. Both states have highly competitive MA markets in their urban centers, structural fragmentation between those markets and their rural and border populations, and a shared refusal to expand Medicaid that narrows the dual eligible pipeline and leaves low-income Medicare beneficiaries with less Medicaid protection than equivalent populations in expansion states. Both are at the center of the MA profitability reckoning producing plan exits, benefit contractions, and forced disenrollment at rates not seen since MA began its two-decade growth trajectory.

Ohio, Pennsylvania, and Michigan

Sun, 15 Mar 2026 00:00:00 +0000

The Rust Belt states share a Medicare population that reflects the economic and health consequences of industrial decline: higher-than-average rates of chronic disease, disability, and dual eligibility, a disproportionately older Medicare population with longer average enrollment tenure, and health systems that built their market positions around a volume model that Medicare payment reform is now actively dismantling. Ohio has approximately 2.3 million Medicare beneficiaries. Pennsylvania has approximately 2.8 million. Michigan has approximately 2.1 million. Together these three states account for roughly 11 percent of the national Medicare population. Their MA markets are mature, their health system competition is intense in urban markets and nonexistent in rural ones, and Ohio is a WISeR pilot state, adding prior authorization burden to a market already under pressure from rate compression, risk adjustment reform, and the highest chronic disease prevalence rates in the northern United States.

Summary: Ohio, Pennsylvania, and Michigan

Sun, 15 Mar 2026 00:00:00 +0000

The Rust Belt states share a Medicare population shaped by the economic and health consequences of industrial decline: higher-than-average chronic disease rates, disability prevalence, dual eligibility, and a disproportionately older enrollment with longer average tenure. Ohio has approximately 2.3 million Medicare beneficiaries, Pennsylvania 2.8 million, Michigan 2.1 million. Together these three states account for roughly 11 percent of the national Medicare population. Their MA markets are mature and intensely competitive in urban centers but nonexistent in rural areas. Ohio is a WISeR pilot state, adding prior authorization burden to a market already under pressure from rate compression, risk adjustment reform, and the highest chronic disease prevalence rates in the northern United States.

New York and Illinois

Sun, 15 Mar 2026 00:00:00 +0000

New York and Illinois have the most sophisticated Medicaid integration infrastructure of any states in the country. They also have some of the highest Medicare per-beneficiary costs, the most complex regulatory environments for MA plans, and the most visible urban-rural and racial equity divides in their Medicare populations. New York’s Managed Long-Term Care program is a national model for community-based LTSS coordination. Chicago’s South and West Side Medicare population is among the highest-need in any major American city. Both states are simultaneously policy leaders and equity laggards, operating integration infrastructure in their metro cores that produces almost nothing for the rural populations in upstate New York or downstate Illinois.

Summary: New York and Illinois

Sun, 15 Mar 2026 00:00:00 +0000

New York and Illinois have the most developed Medicaid integration infrastructure of any states in the country. They also have some of the highest Medicare per-beneficiary costs, the most complex regulatory environments for MA plans, and the most visible urban-rural and racial equity divides in their Medicare populations. New York’s Managed Long-Term Care program is a national model for community-based LTSS coordination. Chicago’s South and West Side Medicare population is among the highest-need in any major American city. Both states are policy leaders and equity laggards simultaneously, operating integration infrastructure in their metro cores that produces almost nothing for rural upstate New York or downstate Illinois.

The South

Sun, 15 Mar 2026 00:00:00 +0000

The South’s Medicare story is the most politically complex and equity-relevant in the country. Three states illustrate three different trajectories for health policy in the post-ACA, post-OBBBA environment. Georgia ran the nation’s only Medicaid work requirements program and produced the cautionary tale that congressional Republicans cited as a model for the federal mandate enacted in July 2025. North Carolina expanded Medicaid in December 2023 after a decade of legislative resistance and is building an SDOH integration infrastructure that is generating national attention. Louisiana has the highest dual eligible rate of any state and the lowest-income Medicare population in the country, and it faces the most severe OBBBA-driven Medicaid pressure of any state in the region. What unites all three is the rural-urban equity fracture: urban centers with functional MA markets and some integration infrastructure, and rural areas where Black Belt counties, Delta parishes, and Appalachian communities face simultaneous provider shortages, MA plan absence, limited SHIP counseling, and concentrated disadvantage that the policy architecture has not reached.

Summary: The South

Sun, 15 Mar 2026 00:00:00 +0000

The South’s Medicare story is the most politically complex and equity-relevant in the country. Georgia ran the nation’s only Medicaid work requirements program and produced the cautionary tale now cited as the model for the federal mandate enacted under OBBBA in July 2025. North Carolina expanded Medicaid in December 2023 after a decade of legislative resistance and is building SDOH integration infrastructure generating national attention. Louisiana has the highest dual eligible rate of any state and the lowest-income Medicare population in the country. What unites all three is the rural-urban equity fracture: urban centers with functional MA markets and some integration infrastructure, and rural areas where Black Belt counties, Delta parishes, and Appalachian communities face simultaneous provider shortages, MA plan absence, limited SHIP counseling, and concentrated disadvantage that the policy architecture has not reached.