# Sleep doctors in Decatur > 4 sleep medicine specialists in Decatur, Illinois — with contact details and clinic affiliations. Canonical: https://findsleepdoctors.com/us/il/decatur Last updated: 2026-10-30 Decatur, Illinois, United States — sleep medicine doctors with verified addresses, phone numbers and clinic affiliations. Cost varies; confirm with your provider and insurer/health fund. 4 sleep specialists listed. ## Sleep doctors in Decatur Looking for someone closer? Use the location search on the home page to sort every nearby practice by distance. ### Danxuan Long Sleep Medicine · Phone: +1 217 329 1000 · Website: https://providers.hshs.org/provider/Danxuan+Long/2527180 Profile: [view details](https://findsleepdoctors.com/us/il/decatur/danxuan-long) ### Dr. Clarence Glenn Sleep Disorders Center Sleep Medicine · Phone: (217) 876-3602; (217) 876-8121 Profile: [view details](https://findsleepdoctors.com/us/il/decatur/dr-clarence-glenn-sleep-disorders-center-decatur) ### MANJESHWAR PRABHU Sleep Medicine · Phone: 217-329-1000 Profile: [view details](https://findsleepdoctors.com/us/il/decatur/manjeshwar-prabhu) ### Mattingley Sleep Clinic Sleep Medicine · Affiliated with Mattingley Sleep Clinic Profile: [view details](https://findsleepdoctors.com/us/il/decatur/mattingley-sleep-clinic) ## Sleep doctors near Decatur - [Lincoln](https://findsleepdoctors.com/us/il/lincoln) — 1 doctors - [Tuscola](https://findsleepdoctors.com/us/il/tuscola) — 1 doctors - [Mattoon](https://findsleepdoctors.com/us/il/mattoon) — 1 doctors - [Springfield](https://findsleepdoctors.com/us/il/springfield) — 15 doctors - [Champaign](https://findsleepdoctors.com/us/il/champaign) — 3 doctors - [Urbana](https://findsleepdoctors.com/us/il/urbana) — 4 doctors - [Peoria](https://findsleepdoctors.com/us/il/peoria) — 9 doctors - [Bloomington](https://findsleepdoctors.com/us/il/bloomington) — 11 doctors ## Frequently asked questions ### How do I find a sleep doctor near me? Start with the list on this page — every sleep medicine doctor below was verified from a public source. Use the phone number or website on each profile to book; most practices ask for a GP referral first. ### What does a sleep doctor treat? Sleep specialists diagnose and treat obstructive sleep apnoea, insomnia, narcolepsy, restless legs syndrome, circadian rhythm disorders and snoring-related problems. ### How much does an appointment cost? Cost varies by practice, insurer and treatment. This directory does not publish prices — confirm the cost with the practice and your insurer or health fund before booking. ## Related - [All sleep doctors in Illinois](https://findsleepdoctors.com/us/il) - [Sleep doctors in United States](https://findsleepdoctors.com/us) - [Home](https://findsleepdoctors.com/)