Our office is open Monday through Friday; Dr.Clarke sees patlents primarily on Thursdays. Patients are seen by appointment only. Our policy is to charge for the time scheduled unless we are notified at least two business days in advance if there should be a need to change an appointment. Please contact us at 510-763-2662.     Whenever possible, Dr. Clarke's staff will help you with your questions and concerns throughout the day. Calls that require Dr. Clarke's personal attention, that are not of an urgent nature, are generally returned at the end of the day.   Greta F. Clarke, M.D. 3300 Webster Street, Suite 1106 Oakland, California 94609 Click here for a map. p: 510-763-2662 f: 510-763-2679