Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas Macdonald, PA

Medical Physician Assistant in Ellsworth, ME · enumerated 2006.

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

National Provider Identifier

1578505632

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Registry record

Entity type Individual (Type 1)

Name Thomas Macdonald

Credential PA

Sex Male

Practice address 50 Union St, Maine Coast Memorial Hospital, Ellsworth, ME, 04605

Phone (207) 664-5340

Fax (207) 664-5338

Enumeration date Jun 12, 2006

Last updated in NPPES Sep 4, 2008

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA-009 (ME) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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 specialty is Thomas Macdonald?

Thomas Macdonald is registered in NPPES with the primary taxonomy of Medical Physician Assistant. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-04.