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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Doris Chan, D.O.

Interventional Cardiology Physician in Staten Island, NY · enumerated 2013 · practices at George S. Ferzli, MD, PC.

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

National Provider Identifier

1508109943

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Registry record

Entity type Individual (Type 1)
Name Mrs. Doris Chan
Credential D.O.
Sex Female
Practice address 65 Cromwell Ave, Staten Island, NY, 10304
Phone (718) 667-8100
Enumeration date Apr 4, 2013
Last updated in NPPES Apr 4, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 303895 (NY) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 303895 (NY) Secondary
207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 303895 (NY) Primary
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 1508109943 active?
Yes, as of the latest NPPES snapshot, NPI 1508109943 is active (record last updated 2023-04-04).
How do I verify Doris Chan's NPI record?
Cross-check NPI 1508109943 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 2023-04-04.