Horrible wait times!!!! Expect to wait between 90-120+ minutes to see the doctor. Two of my kids have food allergies and two have asthma and we have been seeing Dr. McKnight for about 6 years.
Since moving to this new location I can count a handful of times I have been left waiting for 2 hours or more (including today's visit where I actually had to leave and reschedule because I had to pick up my other child from school).
If there were ANY other Doctor as good as Dr. McKnight I would never go back, however because he is the best in town, I have no other choice but to deal with the excruciatingly long wait times. I would recommend to just be prepared to wait.
On a positive note, one of my daughters is a competitive athlete and when her asthma medicine wasn't working anymore they were able to squeeze her in to see the doctor for an "emergency" appointment and we were in and out in 45 minutes (which was amazingly fast)!