Locations
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Marion, IL Weight Loss Clinic

SI Medical Weight Loss Inc.
1909 Coolidge Ave.
Marion, IL 62959
Phone: 618-997-5677
Fax: 618-997-3627
Hours of Operation
- MON: 9:00 am – 2:00 pm (2:00 pm – 5:00 pm Shot Only)
- TUES: 12:00 pm – 7:00 pm
- WED: (Shot Only 9:00 am – 5:00 pm)
- THUR: 12:00 pm – 7:00 pm
- FRI: 9:00 am – 2:00 pm (2:00 pm – 5:00 pm Shot Only)
- SAT: 9:00 am – 1:00 pm
- Weigh in’s and B12 Only Walk in’s Welcome
- Physician Services By Appointment Only
Email for General Inquiries
You may email [email protected] for general contact purposes. Please call if you are making an appointment.
Belleville, IL Weight Loss Clinic

SI Medical Weight Loss Inc.
123 Lincoln Place Court
Belleville, IL 62221
Phone: 618-234-5677
Fax: 618-234-5679
Hours of Operation (Winter Schedule)
- MON: 9:00 am – 4:00 pm
- TUES: 11:00 am – 6:00 pm
- WED: CLOSED
- THUR: 11:00 am – 6:00 pm
- FRI: 9:00 am – 2:00 pm
- Weigh in’s and B12 Only Walk in’s Welcome
- Physician Services By Appointment Only
Email for General Inquiries
You may email [email protected] for general contact purposes. Please call if you are making an appointment.
Alton, IL Weight Loss Clinic

SI Medical Weight Loss Inc.
3 Professional Dr
Alton, IL 62002
Phone: 618-433-9300
Fax: 618-433-9397
Hours of Operation
- MON: 10:00 am – 6:00 pm
- TUES: Appointment Only
- WED: 9:00am – 4:00 pm
- THUR: Appointment Only
- Weigh in’s and B12 Only Walk in’s Welcome
- Physician Services By Appointment Only
Email for General Inquiries
You may email [email protected] for general contact purposes. Please call if you are making an appointment.