Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Scott Benjamin Marrus, MD

Cardiovascular Disease Physician in O Fallon, IL · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1063578284

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Registry record

Entity type Individual (Type 1)

Name Dr. Scott Benjamin Marrus

Credential MD

Sex Male

Practice address Three Saint Elizabeth Blvd Ste 2800, O Fallon, IL, 62269

Phone (618) 233-6044

Fax (833) 973-4218

Enumeration date Dec 29, 2006

Last updated in NPPES Dec 21, 2021

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 2011021984 (MO) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 036-139340 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is Scott Marrus?

Scott Marrus is registered in NPPES with the primary taxonomy of Cardiovascular Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Rebecca Riepshoff Physician Assistant · O Fallon, IL NPI 1497754634 Regina Chiu Cardiovascular Disease Physician · O Fallon, IL NPI 1043272693 Lori Beth Helmers Adult Health Nurse Practitioner · O Fallon, IL NPI 1063457794 Atul Shah Cardiovascular Disease Physician · O Fallon, IL NPI 1215965660 Thomas Cahill Cardiovascular Disease Physician · O Fallon, IL NPI 1023128113 John Scally Cardiovascular Disease Physician · O Fallon, IL NPI 1508952318 Pavan Gupta Cardiovascular Disease Physician · O Fallon, IL NPI 1861519563 Shiyam Satwani Interventional Cardiology Physician · O Fallon, IL NPI 1407067184

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-21.