Up until 2 or 3 years ago, the only doctors who knew about my past TS medical history, were my GP (who I've been seeing since 2004 - she prescribes my HRT), my Allergist/Asthma specialist (I wasn't sure if the fact I was doing HRT, had any effect on my asthma [which I was diagnosed with back in the summer of 2003 - a mega attack almost put me in the hospital at that time]), and the Neurologist/Headache Specialist, who deals with my Cluster Headaches (yes I get those rare and extreme headaches - I've been getting them since 1999, and I was formally diagnosed for them in 2005 [if you think migraines are painful, Cluster Headaches are even worse in that regard; migraine sufferers who get Cluster Headaches will vouch for that]), due to the fact that there is possible evidence that an abnormality in the hypothalamus is the cause for Cluster Headaches (sound familiar? there is a similar theory for us being the way we are), and I thought that information might be relevant for treating my Cluster Headaches (when I told my Neurologist that info., she told me that shouldn't have felt obligated to tell her [ditto for my asthma doctor], after all there was nothing wrong with me having SRS, I was just doing what I needed to do, for my own well being). That was it for me with regards to informing doctors about my HRT, transition related (I had an Orchie in 2001), and SRS related healthcare. I did not consider it typically relevant, to my general healthcare. I've never told other healthcare professionals that information - IMO they have less of a need to know, than my doctors do.
Now as I mentioned earlier, the situation I just mentioned, changed 2 or 3 years ago. Why? Well, once I reached an age, where I would be considered post-menopausal it became problematic for my GP, to keep on giving me HRT, without explaining why, so she put transition, and SRS related medical information in my medical records, to explain why I was getting HRT. I was not very happy about that (I argued with my GP about it), but it became a case of having that information in my medical records, or else not being prescribed HRT anymore. It can be a hassle to find a doctor willing to prescribe HRT (I remember the problems a post-op friend of mine had with finding a doctor to prescribe her HRT, after her GP retired), so I begrudgingly put up with it. Despite that, as a rule, I still don't generally disclose transition, some other other surgeries I've had (I had a rhinoplasty, and trachea shave, when I had SRS), and SRS health related information to medical professionals.
Consider the above comments as food for thought. Also, if the healthcare provider you use, is like mine, information about your HRT, transition, and SRS may already be on record with them, so it may be unnecessary for you to disclose it to healthcare providers, since they already have the capability to access it (which is a lot less awkward IMO, than having to tell them - besides, there's a chance they might not even read the information).
Just My Thoughts On The Issue,
Ellen
HRT Since Sept. 1999
Orchiectomy July 2001
SRS on Nov. 25, 2003 by Suporn