Best bet is to do a search on the internet for the state in which you live.
Years ago I worked as a caseworker for the PA welfare department. I do not remember the whole process, so here goes as best as I can remember.
In PA, one central office covered food stamps, medical, and cash assistance. Medicaid was offered with the higher of the low incomes, followed by food stamps and then cash assistance (lowest incomes).
If you apply for food stamps, you might as well see what the requirements are and if you are eligible for medicaid (even if you are not sick, you may need to periodically visit the doctor). You are in the office anyway, why not fill out a few more forms? You are not obligated to take or use it, so you might as well see what is offered.
Look up the welfare office in the government pages of the telephone book. Give them a call. Bring your most recent pay stubs, rental or mortgage receipts, a copy of a lease if your have it indicating the rental amount. Bring in copies of an electric or phone bill (used to help validate your address).
Depending on where you live, bring in any heating bills, and heating is considered essential in many places and you may get monetary assistance for heat.
You may have to provide copies of your bank account statements (they want to make sure you do not have other money which could you be using). Maybe copies of any retirement plans (401K, IRAs).
Do you own a car or have transportation to work (bring in the onwership papers or if you are still making payments, bring those in also).
Bring in any business related expenses (travel, parking, cell phone, uniform, food).
If you have children, you may also be able to qualify for child care assitance.
Bring in any other debt you may have.
I did a quick search on google, and these are the requirements for Florida:
Eligibility Requirements
Individuals must meet all factors of eligibility to get food stamp benefits. Some of the factors of eligibility are:
Identity - A person must show proof that they are the person as claimed.
Work Rules - Able-bodied adults, 18 to 50 years of age, who do not have dependent children, can only get food stamps in 3 months in a 3-year period, if they are not working or participating in a work or workfare program, at least 20 hours per week.
Income and Deductions - Households must have monthly gross income less than or equal to 130% of the federal poverty level and net income less than or equal to 100% of the federal poverty level. Households containing individuals, age 60 or older or disabled must only meet the net monthly income limit. Some household expenses may be subtracted from the monthly income in the food stamp budget. Deductions are given for shelter expenses, child-care, medical, child support, and earnings.
Other Eligibility Requirements:
An individual must live in the state of Florida.
An individual must be a U.S. citizen or an individual who has a qualified noncitizen status.
Individuals must provide the number from the Social Security Administration or proof that application has been submitted for the number.
Certain individuals are required to cooperate with the state's child support enforcement agency to establish paternity and obtain child support.
Households may have up to $2000 in assets (ex. Bank accounts and property, but not the home you live in or cars worth less than $8500) or if at least one person is age 60 or older or disabled, their household may have up to $3000 in assets.