Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gerard Anthony Baltazar, D.O.

Surgery Physician in Greenwich, CT · enumerated 2010.

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

National Provider Identifier

1255661211

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Registry record

Entity type Individual (Type 1)

Name Dr. Gerard Anthony Baltazar

Credential D.O.

Sex Male

Practice address 5 Perryridge Rd, Greenwich, CT, 06830

Phone (203) 863-3000

Enumeration date Jan 13, 2010

Last updated in NPPES Jul 4, 2026

Taxonomy & licenses

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License 255827 (NY) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 255827 (NY) Primary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 255827 (NY) Secondary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License 255827 (NY) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

Is NPI 1255661211 active?

Yes, as of the latest NPPES snapshot, NPI 1255661211 is active (record last updated 2026-07-04).

How do I verify Gerard Baltazar's NPI record?

Cross-check NPI 1255661211 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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