Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ronald J. Dowgiallo, D.M.D.

General Practice Dentistry in Harwich Port, MA · enumerated 2006 · authorized official Sara Homer, Secretary.

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

National Provider Identifier

1538179239

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Registry record

Entity type Organization (Type 2)

Legal business name Ronald J. Dowgiallo, D.M.D.

Practice address 376 Route 28, Harwich Port, MA, 02646

Phone (508) 432-3118

Fax (508) 432-7963

Enumeration date Aug 8, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License 10378 (MA) Primary

Authorized official

Name Sara Homer

Title Secretary

Phone (508) 432-3118

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Ronald J. Dowgiallo, D.M.D. located?

The practice location on file with NPPES is in Harwich Port, MA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.