Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harry W Matelski, MD

Hematology & Oncology Physician in Fairhaven, MA · enumerated 2006.

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

National Provider Identifier

1699737874

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Harry W Matelski

Credential MD

Sex Male

Practice address 206 Mill Rd, Fairhaven, MA, 02719

Phone (508) 973-3000

Fax (508) 973-3119

Enumeration date Apr 4, 2006

Last updated in NPPES Apr 23, 2020

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 47369 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
110066271A	Medicaid	MA	-

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 Harry Matelski's NPI record?

Cross-check NPI 1699737874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1699737874 active?

Yes, as of the latest NPPES snapshot, NPI 1699737874 is active (record last updated 2020-04-23).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-23.