Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Grand Medical Services, PC

Gastroenterology Physician in Baldwin, NY · enumerated 2008 · authorized official Sonya Ventour, President.

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

National Provider Identifier

1023288149

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Registry record

Entity type Organization (Type 2)

Legal business name Grand Medical Services, PC

Practice address 2280 Grand Ave Ste 303, Baldwin, NY, 11510

Phone (516) 771-4971

Fax (516) 771-2758

Enumeration date Mar 4, 2008

Last updated in NPPES Mar 4, 2008

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 184350 (NY) Primary

Authorized official

Name Sonya Ventour

Title President

Phone (516) 771-4971

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-03-04. Verify at npiregistry.cms.hhs.gov.

Where is Grand Medical Services, PC located?

The practice location on file with NPPES is in Baldwin, NY.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-04.