Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexandra Loomis, DO

Emergency Medicine Physician in Portsmouth, NH · enumerated 2019 · practices at Seacoast Interventional Radiology Associates Pllc.

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

National Provider Identifier

1104387471

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Registry record

Entity type Individual (Type 1)

Name Alexandra Loomis

Credential DO

Sex Female

Practice address 333 Borthwick Ave Ste 100, Portsmouth, NH, 03801

Phone (617) 763-1295

Enumeration date Mar 28, 2019

Last updated in NPPES Jan 20, 2025

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 1018437 (MA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 5151013903 (MI) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License DO3849 (ME) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 22724 (NH) 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

Where does Alexandra Loomis practice?

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

What is the NPI number for Alexandra Loomis?

The National Provider Identifier (NPI) for Alexandra Loomis is 1104387471, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-20.