Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Vincent Dellosso, MD

Internal Medicine Physician in New York, NY · enumerated 2005.

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

National Provider Identifier

1942299920

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Registry record

Entity type Individual (Type 1)

Name Dr. John Vincent Dellosso

Credential MD

Sex Male

Practice address 314 W 14th St, 1st Floor, New York, NY, 10014

Phone (646) 638-4000

Fax (646) 638-1842

Enumeration date Oct 21, 2005

Last updated in NPPES Feb 4, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 197294 (NY) Primary

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
5876007	Other	NY	AETNA
15J051	Other	NY	BLUE CROSS
NP1376	Other	NY	OXFORD
01842231	Medicaid	NY	-
1942692	Other	NY	UNITED
914576/2C6576	Other	NY	HEALTH NET
435009N/4984895002	Other	NY	CIGNA

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 specialty is John Dellosso?

John Dellosso is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-04.