Department of Rehabilitation San Marcos Branch Office Share: Alcohol/Drug Addiction Recovery Services Department of Rehabilitation San Marcos Branch Office Visit Website Request Info 570 Rancheros Drive Suite 170 San Marcos, CA 92069 (760) 510-4705 (760) 471-1062 (fax) Rep Info Map Whom to Contact Marita Beiner Phone: (760) 510-4705 Send an Email Norberto Herrara Phone: (760) 510-5885 Send an Email Scott Jaeger Phone: (760) 510-4705 Send an Email What's Nearby? Distance: 5 10 15 20 25 50 mi.