Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Matthew Joel Guy, MD

Gastroenterology Physician in Rockaway Park, NY · enumerated 2006 · practices at Matthew Joel Guy, MD, PC.

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

National Provider Identifier

1679517643

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Joel Guy

Credential MD

Sex Male

Practice address Rockaway Park, NY, 11694

Phone (718) 945-2714

Enumeration date Jun 16, 2006

Last updated in NPPES Jan 16, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 108805 (NY) Primary

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

Is NPI 1679517643 active?

Yes, as of the latest NPPES snapshot, NPI 1679517643 is active (record last updated 2015-01-16).

How do I verify Matthew Guy's NPI record?

Cross-check NPI 1679517643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Matthew Joel Guy, MD, PC Gastroenterology Physician · Neponsit, NY NPI 1902089501

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-16.