I just started seeing Dr. Challef and the care he and his staff provides is exceptional. EKG, Echo, Stress Test, etc. were all handled by terrific professionals. The front desk person has been the only challenge, however. Make sure you don’t leave without getting all apts made and all instructions needed before walking out the door because you won’t get a promised call, a call-back or even a voicemail (as show by my phone records). Also received multiple incorrect apt reminders and cancellations via email (very stressful). It’s unfortunate because the care provided is SO great - but getting access to it from an inadequate front desk person is an unnecessary obstacle - including scheduling the wrong type of stress test once she finally followed through. All others in the practice have been A++. If they had a better front desk person, I’d give them 10 stars.