Stephen JohansM.D.
Neurosurgery·O Fallon, IL
Stephen Johans, M.D. is a Neurosurgery provider in O Fallon, IL, as of July 2026.
- NPI1013273580
- Registered2012
- Class of2012
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Stephen Johans at a glance
- Provider
- Stephen Johans
- Credential
- M.D.
- Specialty
- Neurosurgery
- Procedures
- Neurosurgery CPT codes
- Location
- O Fallon, IL
- Medical school
- University of Missouri, Columbia School of Medicine
- Graduated
- 2012
- NPI registered
- 2012
- NPI
- 1013273580
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Stephen Johans practice?
Stephen Johans, M.D. is based in O Fallon, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Stephen Johans's NPI number?
Stephen Johans's National Provider Identifier (NPI) is 1013273580, registered in 2012. Specialty on record: Neurosurgery; credential M.D.
Where did Stephen Johans go to medical school?
Stephen Johans, M.D. attended University of Missouri, Columbia School of Medicine, graduating in 2012.
How many Neurosurgery providers in Illinois work at ambulatory surgery centers?
30 Neurosurgery surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Stephen Johans among them. The Illinois Neurosurgery directory lists each one by city with credential, NPI, and center affiliations.
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