Here is a list of agencies where I've worked.
staff:
MCANN ERICKSON / NYC
MRM / NYC
OGILVY /NYC
OGILVY ONE / NYC
PUBLICIS & HAL RINEY /SF
AKQA /SF
CITRON HALIGMAN BEDECARRE /SF
FOOTE, CONE, BELDING /SF
AMMIRATI & PURIS /NYC
KIRSHENBAUAM & BOND /NYC
LOWE & PARTNERS /NYC
freelance:
TRADESTATION / VENTURA CA
RICCIARDI GROUP / NYC
DIGITAS / NYC
SIBLING RIVALRY / NYC
PUBLICIS / NYC
AREA 23 / NYC
MCCANN HEALTH / NYC
FCB HEALTH / NYC
HUMAN CARE / NYC
CUTWATER / SF
HUGE INC / BKLN
SULLIVAN/NYC
BBDO /NYC
JUICE/NYC
BARBARIAN GROUP / NYC
HUDSON ROUGE /NYC
DOREMUS /NYC
PUBLICIS KAPLAN THALER /NYC
KIRSHENBAUM BOND SENECAL + PARTNERS / NYC
KIRSHENBAUM BOND SENECAL + PARNTERS /TORONTO
UNTITLED WORLDWIDE /NYC
MUNN RABOT /NYC
TRUE ACTION(eBay Enterprise) /NYC
DENTSU 360i /NYC
AL JAZEERA AMERICAS /NYC
DIMASSIMO GOLDSTEIN /NYC
AKAMAI TECHNOLOGIES / BOSTON
TOTH BRANDING /BOSTON
DEUTSCH /NYC
OGILVY /NYC
AMMIRATI & PURIS/LINTAS /NYC
TBWA/CHIAT/DAY /NYC
TBWA/CHIAT/DAY /SF
MCCANN ERICKSON /NYC
TONIC 360 /SF
LEVI'S /SF
BACKER SPIELVOGEL BATES /NYC
M.L. ROGERS /NYC
BEBER SILVERSTEIN /MIAMI