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

William J Ryan, P.T.

Physical Therapist in Merrick, NY · enumerated 2006 · practices at Merrick Physical Therapy Pllc.

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

National Provider Identifier

1356412670

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Registry record

Entity type Individual (Type 1)

Name William J Ryan

Credential P.T.

Sex Male

Practice address Merrick, NY, 11566

Phone (516) 223-4300

Fax (516) 223-1142

Enumeration date Nov 10, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 007794-1 (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
4535106	Other	NY	AETNA
AS128	Other	NY	OXFORD
818044	Other	NY	MANAGED PHYSICAL NETWORK
0209201	Other	NY	ORTHONET FOR AETNA
970929	Other	NY	HEALTHCARE PARTNERS
NZ9204	Other	NY	HEALTHNET
Q55271	Other	NY	BCBS

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

How do I verify William Ryan's NPI record?

Cross-check NPI 1356412670 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1356412670 active?

Yes, as of the latest NPPES snapshot, NPI 1356412670 is active (record last updated 2007-07-08).

Other providers at this practice address

Browse all →

Christina Ruisi Physical Therapist · Merrick, NY NPI 1750452132 James Roberts Physical Therapist · Merrick, NY NPI 1174694541 Joseph Ruisi Physical Therapist · Merrick, NY NPI 1225109606 Merrick Physical Therapy Pllc Physical Therapist · Merrick, NY NPI 1760616593 Christopher Voltmer Physical Therapist · Merrick, NY NPI 1306169651

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.