No
A number of rehab centers in the United States accept medicare payments. I recommend searching online at Drug Rehab In US, a large database that lists centers by state. Each gives a general description of the facility, including forms of payment accepted.
The department of Health and Human Services. Investigations into violations of HHS regulations can be carried out by the Office of Inspector General for HHS in conjunction with the FBI and other agencies.
When someone is approved for a Medicare plan they often get pamphlets and paper work for doctors that will accept Medicare insurance. The United States government also has a website and you can get information from there.
The Centers for Medicare and Medicaid Services (CMS) produces a report called the National Health Expenditure Projections, which projects healthcare expenditures for the coming decade in the United States.
Alabama Georgia
Medicaid is a state and federal partnership (for most states). In Florida, the Department of Children and Families (DCF) and the Agency for Health Care Administration (AHCA) are the agencies that administer Medicaid.
Medicare supplement pays part or all of your deductibles and copays that you have with Medicare parts A and B. A "Medicare replacement" is actually Medicare advantage. They are a Medicare option that combines your Part A, B and sometimes part D into one plan that is administered by a Medicare contracted insurance company. Many of these plans have very low or even 0 monthly premiums. You still have copays but they are generally much less than Original Medicare. (If this question relates to United States Medicare, there is no such thing as the concept of "Medicare replacement." I do not see anywhere to add an alternative answer so I put this here just as a warning. In the United States you are either on Medicare or you are not. If you are on Medicare in the United States, you will almost certainly feel the need to supplement it. Over 95% of the people on United States Medicare supplement it in some way. There is a wide choice of ways to supplement United States Medicare. The answer above describes only two of them.
Medicare is a Federal program. The States do not operate it.
Georgia and Alabama
Medicare is a government subsidized medical insurance program. There is no company called "Medicare Billing". Medicare billing information, however, can be found on the United States Government Medicare website.
Medicare Part C (Medicare Advantage) is a managed care arrangement available in some states. It replaces Medicare Parts A & B. Premiums vary. It is not a supplent. It a part of Medicare and is administered by insurance companies.
An employee in the United States that gets payment for services in the United States may have their wages applicable for Medicare tax. Usually, the employer tells the employee whether Medicare tax applies to him or her.