Mother Holding Baby Finger
We were sad to say goodbye to Dr. Jenks when he retired in June 2021. We wish him well in the next phase of his life. He had an amazing and illustrious career, and we are so grateful that 38 years of that were with us at TRE Medical.  

TRE Medical, Ltd.


Gloria E. Kim, M.D.
Jennifer M. Balash, M.D.
Elizabeth A. Weldon, M.D.
Jennifer L. Hannan, M.D.

3825 Highland Avenue
Tower 1 Suite 3K
Downers Grove, IL 60515


Office Hours:
Mon-Thu: 9a-12p and 1:30p-7p
Fri: 9a-12p and 1:30p-4p
Sat and Sun: Office is closed.
Phone: 630.968.2144
Fax: 630.968.2337


After Hours:
For medical emergencies, please call 911.


For urgent or obstetric related matters after hours, please call the main number and an operator will notify the on-call physician of your circumstance.

Prescriptions will be refilled during normal office hours only.