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James M Orsini Jr., M.D.

Hematology & Oncology Physician in Belleville, NJ · enumerated 2008.

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

National Provider Identifier

1659516813

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Registry record

Entity type Individual (Type 1)
Name James M Orsini Jr.
Credential M.D.
Sex Male
Practice address 1 Clara Maass Dr Ste 200, Belleville, NJ, 07109
Phone (973) 751-8880
Fax (973) 751-8950
Enumeration date Dec 2, 2008
Last updated in NPPES Apr 10, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA08924600 (NJ) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 25MA08924600 (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

Where does James Orsini practice?
The practice location on file with NPPES is in Belleville, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for James Orsini?
The National Provider Identifier (NPI) for James Orsini is 1659516813, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-10.