The Doctors Office. Specializing in Family Medicine since 2008. Dr. William De Vito DO, Dr. Dennis Little MD, Denise McMurphy, NP. 2078 Willow Creek Rd. Prescott, AZ86301. Ph: 928.776.6400, F: 855.633.3142. UPDATE: The office is now open for blood draws! Call to schedule or walk-in service granted. - $10 for single blood draw.