Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Donna Hamm, RN

Registered Nurse in Brownville, ME · enumerated 2024 · practices at Katahdin Valley Health Center.

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

National Provider Identifier

1164263968

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Registry record

Entity type Individual (Type 1)

Name Donna Hamm

Credential RN

Sex Female

Practice address 180 Main Rd, Brownville, ME, 04414

Phone (207) 538-3700

Fax (207) 528-2595

Enumeration date Jun 5, 2024

Last updated in NPPES Jun 5, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN54209 (ME) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 Donna Hamm?

Donna Hamm is registered in NPPES with the primary taxonomy of Registered Nurse. 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 2024-06-05.