I've seen Dr. Coley for about 14 years. He keeps his fees very reasonable. He has limited staff and wants patients to pay as service is provided, but will file health insurance claims if requested and if the patient provides the forms.
He is very conscientious but doesn't sell you unneeded procedures, and so forth. He has a limited schedule at his Washington, DC, office: Only Tuesday and Thursday evenings and alternating Saturdays.
I think he keeps pain to a minimum, and he coaches patients on good dental hygiene and care.