Olivia Hebron
Senior Customer Service Representative for Canadian Accounts
Olivia has been with USP for a total of 15 years. She uses her exceptional listening skills and experience in
researching and troubleshooting issues and always keeps customer satisfaction as her guiding factor.
Contact: OH@usp.org
AVAILABLE 7: 30 A.M.–4:00 P.M. EST (12: 30 P.M.–9:00 P.M. GMT)
Terri Markward
Senior Customer Service Representative for National Accounts
Terri has worked for USP for 18 years. Her problem-solving skills and patience are valuable assets. Experience
has taught her that each customer’s needs are unique and require special attention. Terri believes that high-level
customer service also calls for innovation and initiative, both of which she consistently brings to her work.
Contact: TAM@usp.org
AVAILABLE 7: 30 A.M.–4:00 P.M. EST (12: 30 P.M.–9:00 P.M. GMT)
Andrew “Andy” Zatman
Senior Customer Service Representative for Global Pharmaceutical Accounts
Andy has been with USP for 20 years. Communication is his strong point, and he loves building a rapport with
USP’s customers and fulfilling their needs. In fact, he recognizes many regular customers by their voices. Over the
years, Andy has memorized most of the Reference Standards catalog numbers and even customer numbers. This
helps him process orders with great speed and accuracy.
Contact: ASZ@usp.org
AVAILABLE 8: 30 A.M.–5:00 P.M. EST (1: 30 P.M.–10:00 P.M. GMT)
Español/English
Manuel Martinez-Jimenez
Customer Service Representative
Manuel joined the Customer Relationship Management Team in May 2006. Customer service has always been his
preferred field because he likes to work with people and fulfill their needs. He has 10 years’ customer service experience in the
telecommunications industry and in government helping educate the public on consumers’ rights and preventing identity theft.
Contact: MMJ@usp.org; +1-301-816-8111, or 1-800-227-8772, Ext. 8111
AVAILABLE 8: 30 A.M.–5:00 P.M. EST (1: 30 P.M.–10:00 P.M. GMT)
Español/English
Herbert Castillo
Customer Service Representative
Herbert joined the Customer Relationship Management Team in September 2003. His experience includes 9 years in the
telecommunications industry, which enhanced his customer service focus and ability to work in a team environment. Herbert’s
excellent bilingual (English and Spanish) communication skills are utilized answering calls or replying via email to customers’
requests, resolving service and product issues, and placing orders.
Contact: HC@usp.org; +1-301-816-8194, or 1-800-227-8772, Ext. 8194
AVAILABLE 9: 30 A.M.–6:00 P.M. EST (2: 30 P.M.–11:00 P.M. GMT)
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