NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Michael P Chang, MD

Hematology & Oncology Physician in New Milford, NJ · enumerated 2006.

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

National Provider Identifier

1417978719

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Registry record

Entity type Individual (Type 1)
Name Michael P Chang
Credential MD
Sex Male
Practice address New Milford, NJ, 07646
Phone (201) 986-1777
Enumeration date Jul 21, 2006
Last updated in NPPES Jul 2, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 190502 (NY) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MA58239 (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
48125 Other NJ AMERICHOICE
5100333 Other NJ GHI
EXP1K7136 Other NJ HEALTH NET
P997430 Other NJ OXFORD
2025817 Other NJ AETNA
7280904 Medicaid NJ -
8072916003 Other NJ CIGNA

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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Michael Chang?
Michael Chang is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-02.