NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey S Zwang, MD

Critical Care Medicine (Internal Medicine) Physician in Bay Shore, NY · enumerated 2006 · practices at Long Island Lung Center LLP.

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

National Provider Identifier

1750456737

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Registry record

Entity type Individual (Type 1)
Name Jeffrey S Zwang
Credential MD
Sex Male
Practice address 370 East Main Street, Suite 5, Bay Shore, NY, 11706
Phone (631) 666-5864
Fax (631) 666-1187
Enumeration date Nov 22, 2006
Last updated in NPPES Nov 28, 2011

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 144257 (NY) Primary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 144257 (NY) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
00902209 Medicaid NY -

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.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Jeffrey Zwang?
Jeffrey Zwang is registered in NPPES with the primary taxonomy of Critical Care Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-28.