Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Anthony Armbruster, M.D.

Interventional Cardiology Physician in Bridgeton, MO · enumerated 2007 · practices at Premier Surgical Center LLC.

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

National Provider Identifier

1174728893

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Anthony Armbruster

Credential M.D.

Sex Male

Practice address 3550 Mckelvey Rd, Bridgeton, MO, 63044

Phone (314) 741-0911

Fax (314) 741-0501

Enumeration date Jun 21, 2007

Last updated in NPPES Aug 11, 2025

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 036145685 (IL) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 2012015742 (MO) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 036145685 (IL) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 2012015742 (MO) Primary

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

Other identifiers

Identifier	Type	State	Issuer
500849396	Medicaid	IL	-

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

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.

What specialty is Robert Armbruster?

Robert Armbruster is registered in NPPES with the primary taxonomy of Interventional Cardiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-11.