About Dr. Suhail Istanbouly
Dr. Suhail Istanbouly is a sleep medicine physician at Deaconess Health System in Marion, IL.
In Medicare's directory, Dr. Istanbouly is also listed under internal medicine and pulmonary disease.
Dr. Istanbouly completed medical school in 1988.
According to Medicare, Dr. Istanbouly accepts Medicare assignment.
Where Dr. Istanbouly practices
Questions about Dr. Suhail Istanbouly
Where does Dr. Suhail Istanbouly practice?
Dr. Suhail Istanbouly is listed at Deaconess Health System (Marion, IL). Call the clinic to confirm before you book.
How do I make an appointment with Dr. Suhail Istanbouly?
Call Deaconess Health System at (618) 998-7961 and ask for Dr. Istanbouly. Ask whether you need a referral and whether your insurance is accepted.
What does Dr. Suhail Istanbouly specialize in?
Dr. Suhail Istanbouly specializes in sleep medicine, with internal medicine and pulmonary disease also listed. Sleep medicine physicians diagnose and treat conditions such as sleep apnea, insomnia, narcolepsy, and restless legs syndrome.
Does Dr. Suhail Istanbouly accept Medicare?
Medicare's clinician directory lists Dr. Istanbouly as accepting Medicare assignment, which means agreeing to the Medicare-approved amount as full payment for covered services. Confirm with the clinic before your visit.
From the NPI registry (data through November 2, 2026) and Medicare's Doctors and Clinicians directory (released November 12, 2026). These are records physicians and clinics keep with the government, and they can lag behind changes. They do not show board certification. Are you Dr. Suhail Istanbouly, or is something here out of date? Let us know. Find a sleep doctor near you.