Can employer of public park file trespassing warrant against individual based on not paying entrance fee ?

Is that not trespassing? Why would you think differently?

Can I clear an out of state warrant without having to travel?

Get local criminal defense counsel in Ca to address the warrant on your behalf.

In federal civil court medical malpractice, are diagnoses & records derived from communications with psychotherapists privilege?

The privilege can be waived by the patient...

Can I go after the insurance of someone who rear ended me even though he was pushed into me?

Sounds as if the vehicle that impacted into you was not negligent and therefore neither the driver nor their insurer are responsible.

I got taken for a ride by a DOCTOR. What can I do?

Seek out a neurology consult and if damages warrant then speak to local malpractice counsel.

Can the court still order my check be attached for a medical bill when I owe my boss and they are taking it out of my check?

Your check can generally be garnished after a judgment is obtained. You may be wise to consult local asset protection/debt settlement counsel to...

Can my daughter doctors office be held accountable ?

If they did not follow through by completing an indicated test and caused damages thereby they are certainly liable.

If damages warrant get local counsel involved as insurance companies generally respond more to lawyers than to unrepresented parties.

What should I do?

Best to advise the trustee to avoid any issues.

Was I wrongly fired?

If it is an at will employer then you need not have done anything wrong to justify the termination. This is likely not actionable but feel free to...