I was diagnosed with sleep apnea last year and bought a CPAP machine from MediAir. The clinical specialist, Darlene Ahn, was great in answering all my questions and explaining how everything worked. It’s been a year with my machine and I’ve noticed a HUGE difference in how I feel. It’s amazing what a difference a good night sleep makes. I had my annual check-up today with my machine and once again, Darlene was great! She is friendly and professional.