Absolutely horrible. I would not recommend Dr. Lannon or Boston IVF as a whole. He ignored my concerns, my medical history, and my history with other providers. They cancelled appointments with little notice and for reasons that make no sense, sent inconsistent dates for follow-up appointments, failed to send information regarding next steps until it was too late to take those steps, and failed to inform me that I needed to stop taking prenatals prior to certain tests despite knowing I took those supplements. In all, he and his team were sloppy and disorganized.