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 Denver Field Office 

Location: 303 E. 17th Avenue
Suite 410
Denver, Colorado 80203 
Phone: 1-800-669-4000 
Fax: 303-866-1085 
TTY: 1-800-669-6820 
Director: Nancy Sienko 
Regional Attorney:
 Mary Jo O'Neill  
Office Hours:
 The Denver Field Office is open Monday - Friday from 8:00 a.m. - 4:30 p.m. Please call first to obtain information or schedule an appointment.