@aneftp , what do you do about
1. FICA taxes on the 1099.
2. malpractice insurance on the 1099 part of your work
How much are those
FYI since you are in CA you also benefit from being able to bypass SALT limit of 10k as an s-corp. You pay a 9.3% elective payment to CA which then gives you a dollar for dollar reimbursement on your state income tax. Because this payment is made by the corporation it is a business expense and can be deducted on your federal taxes. Also as s-corp most accountants say its just fine to pay yourself 50% salary and take the other 50% as distribution. You do not pay FICA on the distribution. This helps decrease medicare taxes (you probably already maxed out SS taxes). Medicare also has the additional tax on income over 200k which started under Obamacare so you can decrease that as well.
Biggest reason to be 1099 is combining a solo 401k with a cash balance plan (and using a mega backdoor roth as well since you can only do 6% 401k match when you combined the two) + SALT bypass + other business related deductions to get your taxable income below the threshold for the 199A Qualified Business Income deduction which is 20%. I think its 380k~ for married filing jointly. Should be ~70k+ deduction. Marginal tax rate (NOT EFFECTIVE) of ~41% at that range (state + fed) means 28k~ back in your pocket for free. Staying below that 380k is key since that is also around the jump from 24% to 32% federal tax bracket. Obviously don't make less just to avoid taxes but if would rather work less then that IMO is the sweet spot as far as actual take home pay (including retirement savings) to work ratio.
SALT limits for W2 earners and the QBI both started in 2017 with Trump. Both made it worse to be W2.