To be eligible for Medicare benefits, you must meet certain criteria. Generally, you can start receiving Medicare benefits at age 65. However, there are some exceptions to this rule. If you have a disability, you may be eligible for Medicare benefits before age 65. Additionally, if you have end-stage renal disease (ESRD) or amyotrophic lateral sclerosis (ALS), you may also be eligible for Medicare benefits regardless of your age. It's important to note that there are different parts of Medicare, including Part A (hospital insurance), Part B (medical insurance), Part C (Medicare Advantage), and Part D (prescription drug coverage). Each part has its own eligibility requirements and enrollment periods. To determine when you can start receiving Medicare benefits, it's best to contact the Social Security Administration or visit the official Medicare website for more information. Keep in mind that this information is based on general guidelines, and individual circumstances may vary.