Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harbor View Medical Services PC

Internal Medicine Physician in Port Jefferson, NY · enumerated 2025 · authorized official Sharlene Bronstorph, Director.

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

National Provider Identifier

1306631742

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Registry record

Entity type Organization (Type 2)

Legal business name Harbor View Medical Services PC

Practice address 125 Oakland Ave Ste 204, Port Jefferson, NY, 11777

Phone (631) 686-2526

Enumeration date Apr 14, 2025

Last updated in NPPES Apr 14, 2025

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Sharlene Bronstorph

Title Director

Phone (516) 719-5755

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Harbor View Medical Services PC?

Harbor View Medical Services PC is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Providers at this address

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Priscilla Persaud Internal Medicine Physician · Port Jefferson, NY NPI 1457640088 Michael Tax Licensed Practical Nurse · Port Jefferson, NY NPI 1790244317

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-14.