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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

JOHN SULLIVAN
NPI 1114839099
Student in an Organized Health Care Education/Training Program in Huntington, NY

Active since September 17, 2026
790 PARK AVE, HUNTINGTON, NY 11743(631) 427-3700 Get Directions Write a Review

NPPES record added: September 17, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

About John Sullivan NPPES

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

JOHN SULLIVAN (NPI 1114839099) is an individual student in an organized health care education/training program in Huntington, New York and active in the NPI registry since September 2026. He maintains a secondary practice location in Central Islip.

NPPES Registry Identity

NPI1114839099
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameJOHN SULLIVAN
Location Address790 PARK AVEHuntington, NY 11743-4516
Mailing Address790 Park AveHuntington, NY 11743-4516 · (631) 427-3700
Phone(631) 427-3700
Sole ProprietorYes
Enumeration DateSeptember 17, 2026
NPPES CertifiedSeptember 17, 2026
✔ NPI 1114839099 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
790 PARK AVE, Huntington, NY 11743
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Secondary Practice Location 1

Location 1320 Carleton AveCentral Islip, NY 11722-4506 · Phone (631) 663-4300

Other Providers at the Same Location NPPES 20

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

ALEXANDRA GUARDINO
Student in an Organized Health Care Education/Training Program
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-3700
MARY K ROONEY
Social Worker
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 385-2305
DR. JENNIFER MCINTOSH PHD, APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-4001
ALYSSA LYNN SMYTH
Case Manager/Care Coordinator
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-3700
ANNE LORETZ
Social Worker
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-3700
ELIZABETH BARRY NP
Nurse Practitioner (Psychiatric/Mental Health)
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-3700
MS. MARILYN DUFFY GRANDE LMSW
Social Worker
790 PARK AVE
HUNTINGTON, NY 11743
Suffolk County (631) 427-3700
MRS. ALICIA RENA WILLIAMS-HICKSON LMSW
Social Worker (Clinical)
790 PARK AVE, FAMILY SERVICE LEAGUE
HUNTINGTON, NY 11743
Suffolk County (631) 369-0104

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 John Sullivan's NPI number?

The NPI number for John Sullivan is 1114839099. It was assigned to this individual provider in the NPPES registry on September 17, 2026.

Where is John Sullivan located?

John Sullivan practices at 790 Park Ave, Huntington, NY 11743. The listed phone number is (631) 427-3700.

What is John Sullivan's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

When was this NPI record last updated?

The NPPES record for John Sullivan was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.