Dr. Aaron Robert Steimel , DO
Internal Medicine • O Fallon, MO
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Professional Overview & Biography Verified Profile Summary
Dr. Aaron Steimel, DO is a registered Internal Medicine practitioner in O Fallon, MO. With approximately 3 years of clinical practice since graduating from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 2023, Dr. Steimel provides healthcare services at the registered practice location at 20 PROGRESS POINT PKWY STE 108.
Dr. Steimel does not directly accept Medicare assignment.
Practice Location & Contact Primary Location
20 Progress Point Pkwy Ste 108
O Fallon, MO 633682207
Medicare Profile & Education
At Still University Of Health Sciences, College Of Osteo Med, Kirksville
2023
Not Specified
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in O Fallon, MO
Practicing in O Fallon, MO (2747 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Medical Specialties & State Licenses
CMS Verified: 2026-06-04NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Secondary Practice Locations
615 S New Ballas Rd
Saint Louis, MO 631418221
Phone: 3145095305
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Family Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Nurse Practitioner
Nurse Practitioner - Adult Health
Adult Nurse Practitioner
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Nurse Practitioner (Certified)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 20 PROGRESS POINT PKWY STE 108, O FALLON, MO 633682207 (Tel: 6363442400)
Registered at PO BOX 959354, SAINT LOUIS, MO 631959354 (Tel: 6363442400)
Recorded as AARON STEIMEL, DO
Internal Medicine (License #2024049983 in MO)
General Practice (License #2024049983 in MO)
Internal Medicine (License #2023022587 in MO)
NPI status registered as active in NPPES database
Registered at 615 S NEW BALLAS RD, SAINT LOUIS, MO 631418221 (Tel: 3145095305)
Registered at 615 S NEW BALLAS RD, SAINT LOUIS, MO 631418221
Recorded as AARON STEIMEL
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
Po Box 959354
Saint Louis, MO 631959354
Phone: 6363442400
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.