The Business Office is located in Lewis Hall, Room 234.
Please note the Business Office is currently operating remotely. Minimum staff are in the office to allow of social distancing.  Email is the best way to reach us. 
Our normal office hours: 8:30 a.m. to 4:30 p.m. Monday through Friday.
Mark C. Titzer
Vice President for Finance and Treasurer
(708) 524-6935
Doris Dumas
Associate Vice President for Finance and Controller
(708) 524-6770
Liesl Field
Restricted Funds Manager 
(708) 524-6766   
grants and restricted funds questions

Thomas Galvin
Collections Specialist
(708) 524-6206
Student AR account collections
Jan Hnilica
Director of Accounts Receivable
(708) 524-6487
Accounts Receivable steward. Tuition billing, maintenance, and AR collection. Cash
Terri Shimkus
Senior Fiscal Manager
(708) 524-6277
general accounting, reconciliations including cash, temp-restricted questions
Cedric Williams
(708) 524-6788
Credit cards, account transfers, student payables, general accounting and budget questions
Office Fax (708) 488-5170 
(use your credit card or electronic check to make secure on-line payments to DU)


The mileage reimbursement rate is $.575 as of Jan. 1, 2020 in accordance with the IRS standard mileage rates.