Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

SAGAPONACK MEDICAL PC
NPI 1407351646
Clinic/Center - Medical Specialty in Sag Harbor, NY

Active since March 29, 2018
3350 NOYAC RD, SAG HARBOR, NY 11963(631) 731-1099 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 8, 2026, Aug 7, 2025, Aug 2, 2019 and 3 more (6 updates tracked since 2018).

About Sagaponack Medical Pc NPPES

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

SAGAPONACK MEDICAL PC (NPI 1407351646), doing business as Halsey Dermatology, is a healthcare organization registered as a medical specialty in Sag Harbor, New York and active in the NPI registry since March 2018. The organization maintains a secondary practice location in Sag Harbor and lists Mark A. Halsey, President, as its authorized official.

NPPES Registry Identity

NPI1407351646
Entity TypeOrganization
Primary Taxonomy261QM2500X
Legal Business NameSAGAPONACK MEDICAL PC
Location Address3350 NOYAC RDSag Harbor, NY 11963-1908
Mailing Address3350 Noyac RdSag Harbor, NY 11963-1908 · (631) 731-1099
Organization SubpartNo
Authorized OfficialMark A. HalseyPresident · (631) 731-1099
Enumeration DateMarch 29, 2018
Last NPPES UpdateJuly 8, 20266 updates tracked since enumeration
NPPES CertifiedJuly 8, 2026
NPI 1407351646 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinic/Center · Medical SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM2500X
Definition

An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).

3350 NOYAC RD, Sag Harbor, NY 11963

Other Names 2

Doing Business AsHalsey Dermatology
Doing Business AsSag Harbor Dermatology

Secondary Practice Location 1

Location 13330 Noyack RdSag Harbor, NY 11963-1930 · Phone (631) 731-1099

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Licensed Practical Nurse
3350 NOYAC RD
SAG HARBOR, NY 11963
Dermatology
3350 NOYAC RD
SAG HARBOR, NY 11963
Registered Nurse
3350 NOYAC RD
SAG HARBOR, NY 11963
Physician Assistant
3350 NOYAC RD
SAG HARBOR, NY 11963
Dermatology
3350 NOYAC RD
SAG HARBOR, NY 11963

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 Sagaponack Medical PC's NPI number?

The NPI number for Sagaponack Medical PC is 1407351646. It was assigned to this organization in the NPPES registry on March 29, 2018. The provider is doing business as Halsey Dermatology and Sag Harbor Dermatology.

Where is Sagaponack Medical PC located?

Sagaponack Medical PC is located at 3350 Noyac Rd, Sag Harbor, NY 11963. The listed phone number is (631) 731-1099.

What is Sagaponack Medical PC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.

When was this NPI record last updated?

The NPPES record for Sagaponack Medical PC was last updated on July 8, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.