My sons dentist cut his lip very bad and then denied she cut and said it vibrated apart. Then she finally admitted to doing it.

Contact a personal injury attorney in your area.

What is my responsibilty tothis woman?

The property owner and/or management company for the parking lot presumably has liability insurance so you should let them handle it.

Automobile/Pedestrian accident.. Do I have a case?

No, this is not a case of slander. Moreover, you should let your insurance company handle this.

I am a tenant with guest in home, can I changed the locks after she moves out before agreement is up?

No because you state you are a tenant so it would not be "your" home - only the landlord could change the locks.

As the others have posted, those are the rules set by your employer so yes.

Since the company is doing business in California, you should be able to sue them there but the more important it litigating against a company...

Can you sue a doctor and a practice in small claims court?

For all the reasons posted, you need to consult an experienced medical malpractice attorney.

When to seek a bodily injury lawyer and do i have to tell my car insurance about getting one now?

Yes, you should get a personal injury now for all the reasons posted.

Should I contact police and file motion

You need an experienced family law attorney to assist with this.

EEOC did not enter a charge and did not send a right to sue letter for a case that I submitted. It has merit. Can they be sued?

Your case would potentially be against the hospital - not EEOC.