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PROFESSIONAL LIMITED LIABILITY CORP.
NPI 1851367304
Internal Medicine - Geriatric Medicine in Southold, NY

Active since February 24, 2006
50 ACKERLY POND LANE, SOUTHOLD, NY 11971(631) 765-1414(631) 765-1428 Get Directions Write a Review

NPPES record last updated: July 3, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Professional Limited Liability Corp. NPPES

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

PROFESSIONAL LIMITED LIABILITY CORP. (NPI 1851367304) is a healthcare organization registered as a geriatric medicine in Southold, New York and active in the NPI registry since February 2006. The organization lists Jay P Slotkin, President, as its authorized official.

NPPES Registry Identity

NPI1851367304
Entity TypeOrganization
Primary Taxonomy207RG0300X
Legal Business NameEAST END GERIATRIC & ADULT MEDICINE PLLC
Location Address50 ACKERLY POND LANESouthold, NY 11971-3005
Mailing AddressPo Box 1437Southold, NY 11971-0938 · (631) 765-1414 · Fax (631) 765-1428
Phone(631) 765-1414
Fax(631) 765-1428
Organization SubpartNo
Authorized OfficialJay P SlotkinPresident · (631) 765-1414
Enumeration DateFebruary 24, 2006
Last NPPES UpdateJuly 3, 2012
✔ NPI 1851367304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X · License 23013867 (NY)
Also ListedNurse PractitionerTaxonomy 363L00000X
50 ACKERLY POND LANE, Southold, NY 11971
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Other Names 1

Other NameProfessional Limited Liability Corp.

Other Identifiers 3

Medicaid02632497NY
OtherDD8034NY · Rail Road Medicare
Medicare ID-Type UnspecifiedWES321NY

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Professional Limited Liability Corp. 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 Professional Limited Liability Corp., which bills Medicare for the services this clinician delivers.

Clinician (1)

Jay Slotkin, MD
Internal Medicine
NPI 1780650226
50 ACKERLY POND LN
Southold, NY 11971
(631) 765-1414
✔ 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 East End Geriatric & Adult Medicine PLLC's NPI number?

The NPI number for East End Geriatric & Adult Medicine PLLC is 1851367304. It was assigned to this organization in the NPPES registry on February 24, 2006. The provider is also known as Professional Limited Liability Corp..

Where is East End Geriatric & Adult Medicine PLLC located?

East End Geriatric & Adult Medicine PLLC is located at 50 Ackerly Pond Lane, Southold, NY 11971. The listed phone number is (631) 765-1414.

What is East End Geriatric & Adult Medicine PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is East End Geriatric & Adult Medicine PLLC enrolled in Medicare?

Yes. East End Geriatric & Adult Medicine PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through East End Geriatric & Adult Medicine PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to East End Geriatric & Adult Medicine 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 East End Geriatric & Adult Medicine PLLC was last updated on July 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.