I hope you have done a full investigation of the regulations for home health agencies and worker certification in Texas. The filing fee for a corporation or LLC is $300.00 plus any expediting fees and can be done on-line. You will also need a "corporation kit" for records, by-laws, seal. Also available on-line around $60.00. Be aware that a business entity will only protect you if you follow the corporate formalities. The business is a separate "person" not an extension of you.
I don't know if bonding is required but it is an excellent marketing tool. It makes the lients feel more secure about theft in the homes. You really should consider commerical general liability insurance for the business. It is expensive but it provides the best financial protection for the business.
The foregoing is provided as general information, not as legal advice. There is no attorney-client relationship between us.