National DHIA Staff

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P.O. Box 930399
Verona, WI 53593 USA

Jay Mattison

CEO

dhia-person-headshot
P.O. Box 930399
PO Box 930399
Verona, WI 53593 USA

Steven Sievert

Certification Services

Steven Sievert

Certification Services

dhia-person-headshot
P.O. Box 930399
Verona, WI 53593 USA

Leslie Thoman

Accounting/Bookkeeping

Leslie Thoman

Accounting/Bookkeeping

dhia-person-headshot
PO Box 930399
Verona, WI 53593 USA

Mary Mattison

HR and Policy

Last Update: 02/24/2022