Dr. Alex Nicholas Mueller , MD
Emergency Medicine • O Fallon, IL
Professional Overview & Biography Verified Profile Summary
Dr. Alex Mueller, MD is a registered healthcare professional specializing in Emergency Medicine in O Fallon, IL. Practice services are available at 1 SAINT ELIZABETH BLVD under active NPI credentials.
Practice Location & Contact Primary Location
1 Saint Elizabeth Blvd
O Fallon, IL 622691099
Specialty Benchmarks & Practice Insights
Comparative analytics for Emergency Medicine in O Fallon, IL
Practicing in O Fallon, IL (3389 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2026-07-28NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Physician Assistant
Physician Assistant (Certified)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Medicine (M.D.)
Pharmacist
Doctor of Pharmacy (Pharm.D.)
Hospitalist
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 1 SAINT ELIZABETH BLVD, O FALLON, IL 622691099 (Tel: 6182342120)
Registered at 1 SAINT ELIZABETH BLVD, O FALLON, IL 622691099
Recorded as ALEX MUELLER, MD
Emergency Medicine (License #036.180166 in IL)
Registered at 405 W GRAND AVE, DAYTON, OH 454057538 (Tel: 9377233248)
Registered at 405 W GRAND AVE, DAYTON, OH 454057538 (Tel: 9377233248)
NPI status registered as active in NPPES database
Registered at 500 S PRESTON ST RM 305, LOUISVILLE, KY 402021702 (Tel: 5028528696)
Registered at 500 S PRESTON ST RM 305, LOUISVILLE, KY 402021702 (Tel: 5028528696)
Recorded as ALEX MUELLER
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
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NPI Administrative Meta
Mailing Address
1 Saint Elizabeth Blvd
O Fallon, IL 622691099
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