Housing-Insecure and Homeless Seniors
Enrollment Failures, Address Requirements, and What Works
Medicare enrollment is designed for people who have a mailbox and a fixed address. The application process generates paper correspondence. CMS communications including enrollment decisions, appeals notices, and premium billing arrive by mail. The Part B premium must be paid by check, bank account, or Social Security withholding. Every interaction with the Medicare system assumes a stable residential address tied to a Social Security record. For the 41,292 seniors age 65 and older counted as experiencing homelessness on a single night in January 2024, and the much larger number living in doubled-up, transitionally housed, or otherwise precarious circumstances that the point-in-time count does not capture, these design assumptions are enrollment barriers. The population that has the least capacity to navigate a complex enrollment process is the one the process is least designed to accommodate.
That 41,292 figure, drawn from HUD’s 2024 Annual Homeless Assessment Report, represents the highest recorded count in the 65-and-older category since HUD began collecting age-disaggregated data for seniors. Forty-three percent of those seniors were unsheltered, sleeping in places not meant for human habitation. The National Alliance to End Homelessness estimates that the number of older adults experiencing homelessness will triple between 2017 and 2030. The cohort that became homeless in their 30s and 40s during the crack cocaine epidemic and early HIV crisis is aging into Medicare eligibility. The senior homeless population is growing faster than the overall homeless population, and it is growing into a healthcare system that was not built to find them.
The Administrative Architecture as Structural Exclusion#
Medicare enrollment applications require a mailing address. This is not a policy with a published exception pathway for people without one. The address is tied to the Social Security record, and updating it requires interaction with SSA, either online (requiring internet access and an account), by phone (requiring a working phone number and hold times that can exceed an hour), or in person at a Social Security field office. A person experiencing homelessness who moves between shelters, encampments, and temporary arrangements must update their CMS address continuously or miss critical communications. Enrollment confirmations, benefit changes, appeal deadlines, and premium notices all arrive by mail to whatever address is on file. If that address is no longer valid, the correspondence does not reach the beneficiary.
Identity documentation creates a second barrier. Medicare enrollment requires a Social Security number and proof of identity. For people experiencing homelessness, these documents are frequently lost, stolen, or destroyed. The replacement cycle is well documented in the homelessness services literature: replacing a Social Security card requires a birth certificate, replacing a birth certificate requires other forms of identification, and each replacement process requires a mailing address for delivery. The documentation catch-22 traps people in a loop where the documents needed to obtain Medicare are themselves inaccessible without the stable housing that Medicare enrollment does not provide.
Premium payment creates a third barrier. The Part B premium, $185 per month in 2025, must be paid by check, bank account deduction, or Social Security withholding. Seniors without bank accounts and without Social Security benefits have no accessible payment mechanism. Even those receiving Social Security may have their benefits disrupted during periods of homelessness if SSA cannot reach them at their address of record. The Part B late enrollment penalty compounds over time: a senior who missed enrollment during a period of homelessness and enrolls years later faces a permanent premium surcharge of 10 percent for each full 12-month period of delay. The penalty is not waived for homelessness. It accumulates during the exact period when the person was least able to navigate the enrollment process.
The Scale and Distribution#
The 41,292 seniors in the 2024 PIT count represent a floor, not a ceiling. The PIT count is a one-night snapshot conducted during the last 10 days of January. It captures people in shelters and people visible in unsheltered locations. It does not capture people doubled up in the homes of family or friends, people living in motels, people in transitional housing arrangements that fall outside HUD’s homelessness definition, or people in precarious housing situations that will deteriorate into literal homelessness within months. Research consistently estimates that the annually homeless population exceeds the point-in-time count by a factor of three to five.
The housed-but-unstable population is substantially larger. Seniors spending more than 50 percent of income on rent, living in substandard conditions, or one medical bill away from eviction face enrollment barriers similar to those of the literally homeless: unstable addresses, interrupted mail, difficulty maintaining the administrative continuity that Medicare requires. The OBBBA-driven Medicaid cuts that produce coverage loss for low-income seniors can trigger a cascade toward housing instability. A senior who loses Medicaid and cannot afford Medicare cost-sharing may forgo medical care, see chronic conditions worsen, face a medical emergency that produces debt, and lose housing. The coverage loss and the housing loss are not separate events. They are stages in the same downward trajectory.
Geographic concentration matters. California, particularly Los Angeles and the San Francisco Bay Area, has the largest concentration of senior homelessness among states with significant Medicare populations. Washington and Oregon have large unsheltered populations. Arizona and Nevada have growing senior homeless populations driven by housing cost increases that outpace Social Security COLA adjustments. These are also states where MA plan competition is intense and where D-SNP enrollment has been growing, creating a potential intersection between the managed care delivery system and the population most excluded from it.
What FQHCs, Health Care for the Homeless Programs, and MCOs Have Built#
Federally Qualified Health Centers serving homeless populations are Medicare providers. They can bill Medicare for services provided to eligible beneficiaries and serve as the primary care relationship that grounds ongoing care. For a homeless senior who is enrolled in Medicare, an FQHC provides a medical home that does not require a residential one. The enrollment problem is upstream: the senior must be enrolled in Medicare before the FQHC can bill for services.
Health Care for the Homeless programs, funded under Section 330(h) of the Public Health Service Act, provide the primary care, behavioral health, and social services infrastructure serving homeless populations in approximately 300 communities. These programs integrate medical care with the enrollment assistance, housing navigation, and benefits counseling that homeless patients need. Their reach is limited by funding levels that have not kept pace with the growth of the homeless population.
The SOAR (SSI/SSDI Outreach, Access, and Recovery) program is the primary federal infrastructure for enrolling homeless individuals in disability benefits, with downstream Medicare implications. SOAR-trained case managers assist with SSI and SSDI applications that, if approved, create pathways to Medicare eligibility (after a 24-month waiting period for SSDI) and to Medicaid, which in turn triggers MSP eligibility and potential LIS auto-enrollment. The SOAR pipeline is the closest thing to a systematic enrollment pathway for homeless seniors, but it works through disability benefits rather than through Medicare directly, and its capacity is constrained by the number of trained case managers available.
MA plans operating in markets with high senior homelessness have developed community health worker outreach programs. D-SNP plans, which serve dual eligible beneficiaries, have a specific interest in maintaining enrollment for beneficiaries who lose housing. Some plans have built address management protocols that allow beneficiaries to use shelter addresses or case manager addresses for CMS correspondence. Some maintain case management continuity through housing transitions by assigning dedicated care coordinators who track beneficiaries across address changes. These are plan-level innovations, not program requirements. Whether a homeless senior encounters a plan with this infrastructure depends on geography and plan availability.
Policy Changes That Would Make Systematic Enrollment Possible#
The administrative barriers are specific and addressable. An address waiver allowing emergency shelter or service organization addresses for CMS correspondence would eliminate the most fundamental enrollment obstacle. CMS could implement this through administrative guidance without legislation. Shelters and service organizations already serve as mailing addresses for other federal programs, including SSI and SNAP.
Enrollment at shelter intake could use shelter entry as a Medicare enrollment triggering event. A person age 65 or older presenting at a shelter could be screened for Medicare eligibility and connected to enrollment assistance as part of the intake process. This model mirrors Medicaid presumptive eligibility at hospital emergency departments, adapted for a different setting.
MSP automatic enrollment for SSI recipients, required under the 2023 CMS streamlining rule and now subject to the OBBBA moratorium in some provisions, would reach homeless seniors who receive SSI and qualify for QMB. Full implementation of the auto-enrollment mandate would eliminate the MSP application barrier for a population that is disproportionately SSI-eligible. Whether states maintain voluntary implementation despite the moratorium will determine whether this pathway remains open.
A direct certification pathway from SSI enrollment to Part A would mirror the categorical eligibility logic that already connects SSI to Medicaid in most states. If a person is receiving SSI, the federal government already possesses the information needed to determine Medicare eligibility. Automating the connection between those two determinations would eliminate the enrollment gap for SSI recipients who are also Medicare-eligible.
What CMS can do administratively, without legislation, is substantial. The address policy, the direct certification pathway, and the enrollment facilitation guidance could all be implemented through sub-regulatory action. What would require legislation is a systematic framework that treats housing-insecure seniors as a population requiring targeted enrollment infrastructure, analogous to how the Post-Incarceration SEP treats recently released individuals. The policy design exists in outline. The political and administrative will to implement it has not materialized.
The homeless senior population in Medicare is growing. The administrative barriers to enrollment are documented. The interventions that work are known. The FQHCs and Health Care for the Homeless programs and SOAR case managers are already doing this work at the individual level. What does not exist is the system-level infrastructure that would make enrollment automatic rather than heroic. Every homeless senior who qualifies for Medicare but is not enrolled represents a person receiving no primary care, no chronic disease management, no prescription drug coverage, and no preventive services until they arrive at an emergency department sick enough to be admitted. Medicare pays for the admission. It could have paid for the enrollment.
Related Reading#
MCR-06_12 The Full Cognitive Burden: What Seniors and Caregivers Actually Navigate MCR-09_05 Medicare Savings Programs: The Invisible Benefit Cliff MCR-06_10 Conversational AI for Older Adults: Care Navigation, Companionship, and the Regulatory Frontier