PROGRAM OVERVIEW St. Mary’s County, MD (HS) CDI HS is committed to providing timely information to families, staff, and community members. Please check back regularly for the latest program updates. CENTERS Contact the center nearest to you with enrollment questions. Name Phone Address Admin Office (240) 720-7422 22099 Three Notch Rd, Ste 101, Lexington Park, MD 20653 (Map) Main Office 10065 E. Harvard Avenue Suite 700 Denver, CO 80231 info@cdiheadstart.org Media Queries media@acf.hhs.gov Accessibility opens in a new windowFollow Share your Feedback