NPI Portal NPI Lookup & Verification

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

Perry L. Leong, M.D.

Internal Medicine Physician in Middlesex, NJ · enumerated 2006 · practices at Middlesex Medical Care PC.

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

National Provider Identifier

1598744344

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Registry record

Entity type Individual (Type 1)
Name Perry L. Leong
Credential M.D.
Sex Male
Practice address Middlesex, NJ, 08846
Phone (732) 356-3212
Fax (732) 356-5002
Enumeration date Jan 11, 2006
Last updated in NPPES Dec 8, 2009

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 MA061062 (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
223580109 Other NJ UNITED HEALTHCARE PROVIDE
539794 Other NJ AETNA PROVIDER NUMBER
P377639 Other NJ OXFORD PROVIDER ID
223508109 Other NJ HORIZON PROVIDER NUMBER
6691706 Medicaid NJ -

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

What specialty is Perry Leong?
Perry Leong is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-08.