Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcel Ramiro Collazo, M.D.

Hospitalist Physician in New York, NY · enumerated 2008 · practices at Beth Israel Medical Center.

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

National Provider Identifier

1740449123

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Registry record

Entity type Individual (Type 1)

Name Marcel Ramiro Collazo

Credential M.D.

Sex Male

Practice address 1st Ave at 16th Street, New York, NY, 10003

Phone (212) 844-1891

Enumeration date Jun 2, 2008

Last updated in NPPES Sep 14, 2017

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A140577 (CA) 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

Where does Marcel Collazo practice?

The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Marcel Collazo?

The National Provider Identifier (NPI) for Marcel Collazo is 1740449123, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-14.