Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Comprehensive Therapy Services Pt & Ot Pllc

Occupational Medicine Clinic/Center in Riverhead, NY · enumerated 2009 · authorized official Steven Zacharski, Physical Therapist.

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

National Provider Identifier

1659505287

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Registry record

Entity type Organization (Type 2)

Legal business name Comprehensive Therapy Services Pt & Ot Pllc

Practice address 33 Pirate St, Riverhead, NY, 11901

Phone (516) 885-2236

Fax (631) 284-3982

Enumeration date May 11, 2009

Last updated in NPPES May 11, 2009

Taxonomy & classification

261QP2000X Physical Therapy Clinic/Center Ambulatory Health Care Facilities · License 0246091 (NY) Secondary

261QX0100X Occupational Medicine Clinic/Center Ambulatory Health Care Facilities · License 0112521 (NY) Primary

Authorized official

Name Steven Zacharski

Title Physical Therapist

Phone (631) 338-2153

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-05-11. Verify at npiregistry.cms.hhs.gov.

Where is Comprehensive Therapy Services Pt & Ot Pllc located?

The practice location on file with NPPES is in Riverhead, NY.

Providers at this address

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Advanced Occupational Therapy Services, P.C. Occupational Therapist · Riverhead, NY NPI 1851584825

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-11.