Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* </br></br><b>Other John S. Clayton, DO Practice</b></br>Psychiatry</br></br><b>Office Hours</b></br></br>Please find here the reviews and contact details of John S. Clayton, DO in Downingtown. Info on John S. Clayton, DO includes the main phone number (610) 873-1005 for John S. Clayton, DO, a fax number (610) 873-3317, plus the street address 520 E Lancaster Ave Downingtown, PA 19335 for John S. Clayton, DO in Downingtown with clean directions to John S. Clayton, DO and a printable map to John S. Clayton, DO. You can also find the opening hours for this Downingtown doctor. We ask our visitors to take the time to write their review of John S. Clayton, DO or any other doctors they have worked with. Right now there are 0 reviews for medical doctors in Downingtown, and 0 reviews of medical doctors in Pennsylvania. Your comments* (not for publishing) * — Required information John S. Clayton, DO ← View details 520 E Lancaster Ave Downingtown, PA 19335, Downingtown, (US) Pennsylvania (610) 873-1005