John Quinlan

Wherever someone is in life — worn down by chronic anxiety, caught in the grip of addiction, struggling inside a marriage that feels beyond repair — Dr. John Quinlan wants to meet them there. Working from Rancho Cucamonga, California, he holds a Doctor of Psychology and brings broad clinical range to the people who walk through his door: men, women, and older adults facing depression, trauma, abuse, mood disorders, psychotic disorders, and more. For many, that struggle now bleeds into the small hours through a phone that never quite switches off, feeding the anxiety or compulsive patterns that brought them to therapy in the first place.

Dr. Q — as he invites clients to call him — brings a Christian counseling perspective to his practice, rooted in Biblical principles, though he is equally prepared to work with clients of any faith background or none at all. What matters to him is understanding where each person stands: their beliefs, their challenges, and what they need to move forward. Sessions are offered both in-person and online.

For clients whose faith is central to who they are, he offers counseling that honors that foundation directly — encouraging growth in faith, deeper relationships, and genuine healing. For everyone else, the same care, the same rigor, and the same willingness to start exactly where they are.