I am the Plaintiff. Defendants is a public entity. The Judge granted Defendants MSJ, what are my alternatives? ?

Seek review by experienced appellate counsel. According to facts presented here, you do not meet the statutory requirements for reconsideration...

If there is no court order, then you don't owe her 1/2 of medical expenses; however, maybe it's a fair result.

My income increased last year and now my wife's attorney has filed for back spousal support. Is that possible?

...not unless it's a term of your Judgment that failure to inform of an increase in income results in a retroactive upward modification commencing...

Here's a link to a guideline support calculator; if her demands are "in the ballpark" maybe you can just reach an...

Can I request a sooner court date?

Then you need to file a Request for Trial Setting.

The court probably set the Notice of Case Review prior to the filing of the RFO; you can request clarification at the hearing on the RFO.

I've changed the practice area to Employment.

You are not legal domestic partners because he is already married.

Will loss of job and homelessness impact custody?

The emergency hasn't yet occurred so an ex parte would be premature. Depending on how you have personal knowledge of these facts, you could...

How can the new alimony tax law benefit me?

I have not heard of it but you can request a modification based on the children reaching majority which qualifies as a "substantial change of...