Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Dalheim, R.D.H.

Dental Hygienist in Southwest Harbor, ME · enumerated 2014.

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

National Provider Identifier

1861880718

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mary Dalheim

Credential R.D.H.

Sex Female

Practice address 4 Community Lane, Southwest Harbor, ME, 04679

Phone (207) 244-2888

Fax (207) 244-0490

Enumeration date Dec 30, 2014

Last updated in NPPES Dec 30, 2014

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 0747 (ME) Primary

Other identifiers

Identifier	Type	State	Issuer
0747	Other	ME	MAINE BOARD OF DENTAL EXAMINERS

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

How do I verify Mary Dalheim's NPI record?

Cross-check NPI 1861880718 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861880718 active?

Yes, as of the latest NPPES snapshot, NPI 1861880718 is active (record last updated 2014-12-30).

Other providers at this practice address

Browse all →

Mount Desert Island Hospital Dentist · Southwest Harbor, ME NPI 1518064047 Mount Desert Island Hospital Dental Clinic/Center · Southwest Harbor, ME NPI 1235553413

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-30.