<prompt> Human: This may be a bit long, forgive me. Its a little confusing and complex. As a slight background, Im a 25 year old woman in Massachusetts. I was previously on MassHealth and then a Tufts Network Health plan.A few months ago, I was informed my MassHealth had ended because I had not reapplied. They had my wrong mailing address on file so I never received information on this. I only found out it ended when I went to fill a prescription. I had moved frequently within the past few years, all within the Western side of the state, and because I am young and irresponsible, I figured I had failed to update my new address with my health insurance.So filled with anxiety over losing insurance, I waited. Finally, through my new full time job, my employer offers insurance. I decide to get insurance through them, since I dont think I can have MassHealth as my primary insurance if my employer offers. HR asks when I lost MassHealth, as it may be past the 30 days to apply.Today I went to see someone in a local hospital who works for Advocacy for Access, helping people with insurance and whatnot. I was planning on asking about if I qualify for MassHealth for secondary insurance and finding out when specifically I lost insurance.I give her my social security number and she looks in the system. She informs me the system has my birthdate as 010119XX, when my birthdate is actually 0110. I knew about this for like a year or so, whenever I went to pick up my meds. I was young and figured it was a clerical error. I think at one point I had called to correct but I guess it was reverted back? I never really bothered with it because I was sort of crippled with anxiety...So today. The Advocacy assistant tells me Looks like your insurance ended just a few days ago. I find this odd, but am happy to hear the news. This means its within the 30 days so I can enroll in my employers insurance without having to wait till open enrollment. She says shell print me a letter stating when I lost insurance to show HR. She prints it and the beginning of the letter has my name and address at the top.But this is where it goes awry. That is not my address. I have never lived in this town in my life. I have lived sort of near there years before I ever got MassHealthTufts.So they look up my SSN again and this address is popping up, along with a completely different phone number, and an entirely different primary care doctor.So there must either be someone with the same name and born on 0101, not 0110, and someone my SSN was confused and this is on the health insurance administrative end, or my SSN was compromised and someone is using my health insurance? The letter had the same insurance member number as the card in my wallet, so I dont know how the other person is getting away with it?The customer service number is closed for the evening, so I cant call to straighten this out until tomorrow -- thankfully Im on vacation this week to sort this all out. So I thought Id post here and see what I can do to help myself.Sorry it was so long.TL;DR: Someone possibly using my SSN for health insurance.  <response>: Irs.govThere is a number you can call for identity theft 