1st ISO

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Contact Us

A good partner begins with a good team. Luckily for you, we've put together one that will work to serve both you and your business.

Customer Service hours:
Monday - Friday: 7am - 8pm CST
Saturday - Sunday: 8am - 4pm CST

Ph: 1-800-233-3776

Dave Charles Sr

Dave Charles Sr
President
Phone: 800.233.3776
Email: dcharles@1stiso.com

Al Jamir

Al Jamir
Vice President
Phone: 800.233.3776
Email: ajamir@1stiso.com

Lori Walters

Lori Walters
Controller
Phone: 800.233.3776
Email: lwalters@1stiso.com


Brian Kimber

Brian Kimber
Cash Management Manager
Phone: 800.233.3776
Email: bkimber@1stiso.com

Sarah Zelhofer

Sarah Zelhofer
Billing Specialist
Phone: 800.233.3776
Email: szelhofer@1stiso.com

About Us

1st ISO Processing is a privately owned, independent full service processor. We are one of the few companies in our industry that provides in-house transaction processing resulting in the fastest possible transactions.

Customer Service Hours

Monday - Friday: 7am - 8pm CST
Saturday - Sunday: 8am - 4pm CST

Phone: 800.233.3776


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Frequently Asked
  • Who will handle our account?
  • How will DPL connections to FDR be impacted?
  • Do you have mobile alerts?
  • Will I receive a web login?
  • Will new master keys be sent?

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1st ISO Processing | 1740 Cofrin Drive | Green Bay, WI 54301 | 800.233.3776