The company can check social security card for medical treatment.

I can only answer you this way: if the company wants to check, it can be found. There is nothing you can do about it.

If you are worried about "concealing the previous company's work experience during the interview", then you should consider whether it is possible to change the word "concealing" to "ignoring" or "white lies". It depends on your own expression of "interview" and the analysis of the attention of memory companies.

If you care about this job, I hope you will actively strive for it. In my opinion, even if you hide your work experience in other units, if it is only normal flow, even if it is only three months, as long as you have a legitimate reason to leave the original unit, I think your new company will probably understand your concerns.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.