Why did you choose a career in endocrinology?

I fell in love with endocrinology when I did a rotation in it at Mizzou. Its science is sensible, and it has an impact on patients' daily quality of life. 


What do you enjoy most about being a physician?

I enjoy time with people, getting to know their stories and, of course, helping them do better. 


What do you like to do in your free time?

When I'm not in the office, I enjoy reading, exercising and taking photographs.


What is something that you want patients to know about you?

As a physician, I’m your friend. Together, we can improve your health and sense of well-being. 
Check out Dr. Siyam's profile page to find out how to schedule an appointment.

Media Contact

Lori Harlan

Divisional Director of Marketing
HSHS Medical Group
Office: (217) 321-9292
Cell: (217) 321-9292

Latest News

HSHS Drive-Thru Care

 September 13, 2021

HSHS Drive-Thru Care, powered by HSHS Medical Group, is available in Decatur and O'Fallon, Illinois. HSHS Drive-Thru Care offers quick and convenient lab services for patients 3 and older...



 September 10, 2021

COVID vaccines are available for residents 12 years and older who live or work in Illinois. Anyone under the age of 18 must have a guardian present to receive the vaccine. Third doses are available...


HSHS Medical Group Awards Colleague of the Month to Tammy Trost

 September 9, 2021

HSHS Medical Group is pleased to award Tammy Trost with our September Colleague of the Month Award. Tammy is a registered nurse for HSHS Medical Group Family Medicine in Hillsboro, Illinois.