Sanford A. Barber D.M.D. We are conveniently located in the Randolph Hills Medical Center at the corner of Randolph Road and Rocking Horse Lane 1/2 mile east of Loehmanns Plaza. There is ample free parking. Office Location: Randolph Hills Periodontics 4701 Randolph Road Suite 104 Rockville, Maryland 20852 Phone: 301-881-2323 Fax: 301-881-1301 Email: randolphperio@aol.com