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LONG ISLAND PSYCHIATRIC SERVICES - NP IN PSYCHIATRY, PLLC
NPI 1477951713
Nurse Practitioner - Psychiatric/Mental Health in Smithtown, NY

Active since December 19, 2014
21 REDWOOD LN, SMITHTOWN, NY 11787(516) 456-9384(631) 297-8444 Get Directions Write a Review

NPPES record last updated: December 19, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Long Island Psychiatric Services - Np In Psychiatry, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LONG ISLAND PSYCHIATRIC SERVICES - NP IN PSYCHIATRY, PLLC (NPI 1477951713) is a healthcare organization registered as a psychiatric/mental health in Smithtown, New York and active in the NPI registry since December 2014. The organization lists Zvi S Yadin, Nurse Practitio0ner In Psychiatry, as its authorized official.

NPPES Registry Identity

NPI1477951713
Entity TypeOrganization
Primary Taxonomy363LP0808X
Legal Business NameLONG ISLAND PSYCHIATRIC SERVICES - NP IN PSYCHIATRY, PLLC
Location Address21 REDWOOD LNSmithtown, NY 11787-2718
Mailing Address21 Redwood LaneSmithtown, NY 11787 · (516) 456-9384 · Fax (631) 297-8444
Phone(516) 456-9384
Fax(631) 297-8444
Organization SubpartNo
Authorized OfficialZvi S YadinNurse Practitio0ner In Psychiatry · (516) 456-9384
Enumeration DateDecember 19, 2014
✔ NPI 1477951713 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in NY · 400794
21 REDWOOD LN, Smithtown, NY 11787
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Long Island Psychiatric Services - Np In Psychiatry, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Long Island Psychiatric Services - Np In Psychiatry, PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Zvi Yadin, PH.D. NP
Nurse Practitioner
NPI 1821178476
21 REDWOOD LN
Smithtown, NY 11787
(631) 360-3330
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Long Island Psychiatric Services - Np In Psychiatry, PLLC's NPI number?

The NPI number for Long Island Psychiatric Services - Np In Psychiatry, PLLC is 1477951713. It was assigned to this organization in the NPPES registry on December 19, 2014.

Where is Long Island Psychiatric Services - Np In Psychiatry, PLLC located?

Long Island Psychiatric Services - Np In Psychiatry, PLLC is located at 21 Redwood Ln, Smithtown, NY 11787. The listed phone number is (516) 456-9384.

What is Long Island Psychiatric Services - Np In Psychiatry, PLLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Long Island Psychiatric Services - Np In Psychiatry, PLLC enrolled in Medicare?

Yes. Long Island Psychiatric Services - Np In Psychiatry, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Long Island Psychiatric Services - Np In Psychiatry, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Long Island Psychiatric Services - Np In Psychiatry, PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Long Island Psychiatric Services - Np In Psychiatry, PLLC was last updated on December 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.