Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexandra Anna Malarczyk, MD

Surgery Physician in Saint Louis, MO · enumerated 2024.

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

National Provider Identifier

1164265369

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexandra Anna Malarczyk

Credential MD

Sex Female

Practice address 1 Barnes Jew Hosp Plz, Saint Louis, MO, 63110

Phone (314) 362-8028

Enumeration date Jun 15, 2024

Last updated in NPPES Jun 15, 2024

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 2024022546 (MO) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Alexandra Malarczyk practice?

The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alexandra Malarczyk?

The National Provider Identifier (NPI) for Alexandra Malarczyk is 1164265369, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-15.