Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Vasileios Kostaras, MD

Student in an Organized Health Care Education/Training Program in Stony Brook, NY · enumerated 2008.

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

National Provider Identifier

1144487968

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Registry record

Entity type Individual (Type 1)

Name Dr. Vasileios Kostaras

Credential MD

Sex Male

Practice address 101 Nicolls Road, Hsc 19, Stony Brook, NY, 11794

Phone (631) 444-1791

Fax (631) 444-7689

Enumeration date May 20, 2008

Last updated in NPPES Aug 21, 2012

Taxonomy & licenses

204F00000X Transplant Surgery Physician Allopathic & Osteopathic Physicians · License MT191836 (PA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 256798 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Vasileios Kostaras?

Vasileios Kostaras is registered in NPPES with the primary taxonomy of Student in an Organized Health Care Education/Training Program. 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 2012-08-21.