NPI Portal NPI Lookup & Verification

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

Maan-Jy Chu, M.D.

Pediatrics Physician in Darien, IL · enumerated 2006.

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

National Provider Identifier

1861430324

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Maan-Jy Chu
Credential M.D.
Sex Female
Practice address Darien, IL, 60561
Phone (630) 963-7669
Fax (630) 963-7994
Enumeration date Jun 4, 2006
Last updated in NPPES Feb 27, 2012

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

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036049460 (IL) 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
036049460 Medicaid IL -

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Maan-Jy Chu?
The National Provider Identifier (NPI) for Maan-Jy Chu is 1861430324, a Type 1 (individual) record in the CMS NPPES registry.
Where does Maan-Jy Chu practice?
The practice location on file with NPPES is in Darien, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-27.