I have been seeing Dr Janssen for a number of years. I like their new office location, since I live right across the street, and when you have an appointment time, you usually do not have to wait much, unlike other offices. I believe they have 4 or 5 rooms and Dr Janssen also has a Physician Assistant and you can also do your blood work at the office, instead of driving to Quest office, which is very convenient! Dr Janssen is very professional and I trust his diagnosis and courses of treatment. I highly recommend him for your primary care physician. Good location at the Colonnade at Kentlands condo complex.