Walden/Sierra is a 501(c)(3) nonprofit organization that has been serving Southern Maryland since 1973 through crisis services, counseling and substance abuse treatment.
As part of our commitment to providing community-based services to individuals, couples and families, we have d eveloped a strong network of partnerships with local schools, community agencies and the judicial system.

Learning Center

Agency Information

Contact Information

Executive Director, Dr. Kathleen O'Brien, Ph.D.
301-997-1300 ext 803
email

Assistant Director, Gary Lynch
301-997-1300 ext 807
email

Financial Director, Charles Wood
301-997-1300 ext 810
email

Community Development Manager, Laura Webb
301-997-1300 ext 804
email

Human Resources Manager, Tami Radisch
301-997-1300 ext 808
email

Compass House Program Supervisor, Anni Christensen
301-997-1300 ext 862
email

Crisis & Community Counseling Supervisor, Marlene Deal
301-997-1300 ext 863
email

Substance Abuse Outpatient Services Program Supervisor
Betsy Lenhart-Cooksey, 301-997-1300
email

Residential Treatment (Anchor ICF) Program Supervisor
Rob Prince, 301-997-1300
email

Site Locations

Anchor Treatment Center (Charlotte Hall Office)
30007 Business Center Drive
Charlotte Hall, MD
301-997-1300 phone; main desk ext 846 and 847
301-290-0280 fax

California Office and Compass House
44871 St. Andrew's Church Road
California, MD
301-997-1300, ext 860 (hotline) ext 871 (counseling) ext 861 (Compass)
301-863-3368 fax

Lexington Park Office
Lexington Park Office
21770 FDR Blvd
Lexington Park, MD
301-997-1300 ext 881
301-866-9189 fax

Leonardtown Office (and mailing address)
26845 Point Lookout Road
Leonardtown, MD 20650
301-997-1300 ext 801 and 802
301-997-1321 fax