Firstly If you read your introduction here you have already put your keywords in that sentence. Being genuine on your homepage and speaking to the user of your site rather than the bot is always preferable. The algorithm (more accurately AI) is getting so much better at spotting keyword stuffing so be careful how you word it.
Having your address visible will definitely help you in the geographic search for your service and having a description of your service is relevant to your company.
I'd recommend a separate page targeted at each speciality rather than a one for all home page so that the search will give relevant results.
If I was in your position I'd look at the size of the homepage, it's very long, especially on a mobile device. It is also 'heavy' using page speed insights you only score 47/100. Pagespeed is a ranking factor not to be ignored
One other factor to consider is the fact you are not secure yet. Initial an SSL certificate for your site asap as that will stop users on Chrome actually viewing your site completely! Soon it will be browser wide. whether is is a ranking signal yet I'm unsure but it will be in the future for definite.
I hope that helps.