Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alyssa Hammar, DO

Surgery Physician in Columbia, MO · enumerated 2022.

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

National Provider Identifier

1063144186

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Registry record

Entity type Individual (Type 1)

Name Alyssa Hammar

Credential DO

Sex Female

Practice address 1 Hospital Dr, Columbia, MO, 65212

Phone (573) 884-2000

Enumeration date Jun 28, 2022

Last updated in NPPES Jun 28, 2022

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 2022024345 (MO) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

What is the NPI number for Alyssa Hammar?

The National Provider Identifier (NPI) for Alyssa Hammar is 1063144186, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alyssa Hammar practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-28.