Contact support The HMS IT Help Center is the best way to get help from your local customer service representative. HMS IT Help Center The HMS IT Help Center is the fastest way to get the help you need, but you can still call or email our support representatives if you prefer: Email the service desk at firstname.lastname@example.org. Call the service desk at 617-432-2000. For after-hours support, call the service desk and dial extension 7 when prompted. Contact your local support team through our list of IT support representatives by location.