I canu2019t make a concrete recommendation without knowing your income and how you obtained your green card, but hereu2019s your general options:Maryland makes free Medicaid coverage available without a 5-year wait to some low-income immigrants (e.g. refugees). Medicaid Immigration Status RequirementsHowever, before you enroll in Medicaid, please be aware that the government may try to recoup all of your medical expenses from the sponsor who signed the affidavit of support for your immigration petition, which I suspect is your son. Your sponsoru2019s liability ends when you acquire US citizenship or have worked in the US for 10 years (40 social security credits), whichever comes first.Get a quote for private insurance and insurance subsidies (u201cpremium tax creditsu201d) here: Maryland Health Connection For example, if you were married with an annual income of $25,000, you could get a plan that covers you both for $90 per month after subsidies. Normally, thereu2019s a minimum income required to qualify for subsidies because low-income folks are supposed to go on Medicaid. However, if you do not qualify for Medicaid on account of your immigration status (5-year bar), then you can get subsidies with no minimum income required. The subsidies would get calculated as if you earned $12,140 (single) or $16,460 (married).You can buy into Medicare. (That option is available to legal residents with no work history in the US.) You would have to pay $422 per month per person for Part A (inpatient coverage) and $134 per month for Part B (physician and outpatient coverage). Add about $30 per month for Part D if you also want prescription drug coverage (highly recommended).Some colleges and universities have cheap group policies for their students. Check if you can enroll in 1 course at a nearby college to gain access to their student health insurance plan.You can explore Christian Health Sharing Ministries. These are cheaper than traditional health insurance, but they tend to be very very bad at covering chronic conditions, which tends to make them a bad option for older adults. In addition, Ministries typically require that adults aged 65 or above also enroll in Medicare.You can explore international health insurance plans for immigrants. (Regular travel health insurance policies are void as soon as you take up a residence in the country youu2019re visiting.) However, these are likely either inadequate or similarly as expensive as private insurance in the US.Whatever you do, please stay away from short-term plans and limited benefit plans like u201ccritical illnessu201d or u201caccidentu201d plans. The former has too many limitations and exclusions for an older adult. The latter pay a fixed amount per occurrence, which is generally much less than the bill you will receive from your healthcare provider. (e.g. the plan might pay $200 per hospital day, while the hospital charges you $2,000 per day).I hope you are able to find a plan that is affordable for you!