NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gregory R Groth, LMT

Massage Therapist in Levittown, NY · enumerated 2009.

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

National Provider Identifier

1659609949

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Gregory R Groth
Credential LMT
Sex Male
Practice address 11 Emerson Ave, Levittown, NY, 11756
Phone (516) 566-0000
Enumeration date Nov 24, 2009
Last updated in NPPES Aug 28, 2026

Taxonomy & licenses

225700000X Massage Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 019137 (NY) Primary

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 1659609949 active?
Yes, as of the latest NPPES snapshot, NPI 1659609949 is active (record last updated 2026-08-28).
How do I verify Gregory Groth's NPI record?
Cross-check NPI 1659609949 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-28.