Low-Income: The government’s Medicaid program provides medical assistance for low-income families and individuals; low-income pregnant women, children and the elderly automatically qualify. Call (877) 267-2323.

Community: Local health centers often provide basic services, including preventive medicine, lab tests, pharmacy services and dental care, charging fees based on your income. Call (888) 275-4772.

Kids: All states offer free or low-cost care for children up to age 19 through State Children’s Health Insurance Programs (SCHIP). Call (877) KIDS-NOW.

Seniors, disabled: Folks 65 and older (or those younger than 65 with a disability) can enroll in Medicare, which provides prescription-drug benefits and primary care. For more info, call (800) 633-4227 or visit www.medicare.gov.

HIV: To find free testing and counseling, call (800) 342-2437. If you’re HIV positive, you can apply for the AIDS Health Insurance Program when you sign up for Medicaid; call (877) 267-2323. You can get free HIV medication through your state’s AIDS Drug Assistance Program. Call (800) 734-7104; in some states there’s a waiting list.

Seniors, Disabled: Folks 65 and older (or those younger than 65 with a disability) can enroll in Medicare, which provides prescription-drug benefits and primary care. For more info, call (800) 633-4227 or visit www.medicare.gov.

Undocumented: If you’re undocumented, Medicaid and Medicare don’t cover you, but you can seek emergency-room treatment without penalty.