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Robert S Chang, MD

Emergency Medicine Physician in Greenwich, CT · enumerated 2006.

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

National Provider Identifier

1760581672

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Registry record

Entity type Individual (Type 1)
Name Robert S Chang
Credential MD
Sex Male
Practice address 5 Perryridge Rd, Greenwich Hospital, Greenwich, CT, 06830
Phone (203) 863-3637
Enumeration date Sep 21, 2006
Last updated in NPPES Sep 23, 2014

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 25MA08016400 (NJ) 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
D08887200 Other NJ CDS NUMBER

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 is the NPI number for Robert Chang?
The National Provider Identifier (NPI) for Robert Chang is 1760581672, a Type 1 (individual) record in the CMS NPPES registry.
Where does Robert Chang practice?
The practice location on file with NPPES is in Greenwich, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-23.