Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Anthony Diaz, PT

Physical Therapist in Franklin Square, NY · enumerated 2005.

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

National Provider Identifier

1609857853

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Anthony Diaz

Credential PT

Sex Male

Practice address 820 Hempstead Tpke, Franklin Square, NY, 11010

Phone (516) 358-8911

Fax (516) 358-8960

Enumeration date Nov 7, 2005

Last updated in NPPES Jan 10, 2012

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 021050-1 (NY) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
650024429	Other	NY	RAILROAD MEDICARE
2134141	Other	NY	VYTRA # EAST MEADOW
412155P	Other	NY	HIP PRIS# FR.SQ
6697222	Other	NY	GHI # EAST MEADOW
QC5721	Other	NY	EMPIRE BCBS
6401276	Other	NY	UHC GOVERNMENT PLAN
124290P	Other	NY	HIP # LEVITTOWN
2066214	Other	NY	UNITED HEALTH CARE
Q13C21	Other	NY	EMPIRE BCBS # LEVITTOWN
191315P	Other	NY	HIP # EAST MEADOW
354958200	Other	NY	DEPARTMENT OF LABOR
P3560062	Other	NY	OXFORD # EAST MEADOW
2066214	Other	NY	UHC # EAST MEADOW
6698676	Other	NY	GHI
825664	Other	NY	MPN # LEVITTOWN
Q18V11	Other	NY	EMPIRE BCBS
1165953	Other	NY	MULTIPLAN
127979	Other	NY	VYTRA

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.

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Frequently asked questions

Is NPI 1609857853 active?

Yes, as of the latest NPPES snapshot, NPI 1609857853 is active (record last updated 2012-01-10).

How do I verify Mark Diaz's NPI record?

Cross-check NPI 1609857853 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-10.