Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark S Steen, MD

Individual provider Specialist · NPI 1306929906

Mark S Steen, MD is an Interventional Cardiology in Springfield, Illinois. Graduated from University of Minnesota Medical School in 1974, 52 years ago. Practices with Southern Illinois Medical Services Nfp, a 332-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
52
Trained at
University of Minnesota Medical School
Licensed in
IL
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

619 E Mason St Ste 4P57
Springfield, IL 62701-1034
Phone: (217) 788-0706
Fax: (217) 525-2535
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence 036081941 (IL)
Specialist Taxonomy 174400000X · Licence 036-081941 (IL)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 036081941 (IL)

Record details

NPI number1306929906
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 24, 2006
Last updated in NPPESDecember 5, 2024
Certification dateDecember 5, 2024
Mailing address619 E Mason St, Suite 4p57, Springfield, IL 62701-1034

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERVENTIONAL CARDIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1974 (52 years in practice)
Group practice Southern Illinois Medical Services Nfp — 332 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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