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

Dr. Ming T Chien, M.D.

Pediatric Emergency Medicine (Emergency Medicine) Physician in Naperville, IL · enumerated 2007.

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

National Provider Identifier

1952518920

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Registry record

Entity type Individual (Type 1)

Name Dr. Ming T Chien

Credential M.D.

Sex Male

Practice address Naperville, IL, 60540

Phone (630) 527-3000

Fax (630) 527-3371

Enumeration date May 17, 2007

Last updated in NPPES Nov 14, 2025

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

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036117696 (IL) Secondary

2080P0204X Pediatric Emergency Medicine (Pediatrics) Physician Allopathic & Osteopathic Physicians · License 40169 (AZ) Secondary

2080P0204X Pediatric Emergency Medicine (Pediatrics) Physician Allopathic & Osteopathic Physicians · License 036117696 (IL) Secondary

207PP0204X Pediatric Emergency Medicine (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License 036117696 (IL) Primary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036117696 (IL) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Ming Chien?

Ming Chien is registered in NPPES with the primary taxonomy of Pediatric Emergency Medicine (Emergency 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 2025-11-14.