HSHS Medical Group Family Medicine - Mt. Zion - Decatur - IL
Primary Care • Zion, IL • Since 1978
About
HSHS Medical Group Family Medicine – Mt. Zion, Decatur, IL is part of the Hospital Sisters Health System network. The page highlights: - Service focus: Family medicine within the HSHS Medical Group in central Illinois. - Location context: Mt. Zion/Decatur area in Illinois, with ties to the broader HSHS system and affiliated facilities (e.g., St. Elizabeth’s, Memorial Health, Springfield Clinic, St. John’s/St. Mary’s hospitals). - Network connections: Alumni and talent sources indicate close collaboration with local hospitals and clinics such as SSM Health, Memorial Health, Springfield Clinic, and HSHS hospitals. - Practical details: HQ and U.S. offices are listed in Springfield, IL, with multiple regional mentions, signaling administrative and referral links for the Mt. Zion/Decatur practice. Note: The provided highlights emphasize the broader HSHS footprint and partner networks rather than a standalone, detailed profile for "Family Medicine – Mt. Zion." If you need directions, provider roster, or appointment steps for that specific Mt. Zion location, I can fetch or format that concisely.
Clinic Type
Primary Care
Address
4965 East Lost Bridge Road, Decatur, IL 62521
Phone
217-864-5531
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Opening Hours
7:00 AM - 5:00 PM
Services Offered
Team
Insurance & Payment
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Languages Spoken
Social Media
Photos






What Patients Say
Overall sentiment across review platforms: mixed
- Vitals: 4.7/5 for Dr. Dennis D. Costerisan (N/A)
- Vitals: 2.6/5 for Dr. Larisa Georgy Ciatlos Deak (N/A)
Patients praise
- Some individual physicians at the practice have received high ratings
Common complaints
- General patient rights and grievance process documented by HSHS for all facilities
"Be the first to leave a review"
— WebMD patient profile for the facilitySynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Medical Assistant (MA) II - Float Pool, Hospital Sisters Health System — Jul 14, 2025
- New neurology provider brings patient-focused care to Decatu... — Jun 23, 2026
- HSHS Medical Group welcomes Dr. Emma Clardy to Family & Internal Medicine Maryville – Illinois Business Journal — Feb 6, 2026
- HSHS Medical Group Family Medicine in Shiloh expands with new provider – Illinois Business Journal — Mar 4, 2026
- HSHS expands care in Taylorville with new Family Medicine ph... — Jun 9, 2026
Information sourced from the clinic's website as of July 11, 2026.
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