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Dr. Robert Tassan, M.D.

Hematology (Internal Medicine) Physician in Westwood, NJ · enumerated 2006.

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

National Provider Identifier

1578596508

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert Tassan
Credential M.D.
Sex Male
Practice address 260 Old Hook Rd, Suite 301, Westwood, NJ, 07675
Phone (201) 383-4840
Fax (201) 383-4824
Enumeration date Jul 10, 2006
Last updated in NPPES Jan 26, 2022

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 25MA07452600 (NJ) Secondary
207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 25MA07452600 (NJ) 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.

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Frequently asked questions

How do I verify Robert Tassan's NPI record?
Cross-check NPI 1578596508 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1578596508 active?
Yes, as of the latest NPPES snapshot, NPI 1578596508 is active (record last updated 2022-01-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-26.