Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Chau L Chen, MD

Internal Medicine Physician in St Louis, MO · enumerated 2006.

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

National Provider Identifier

1760570071

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Registry record

Entity type Individual (Type 1)

Name Dr. Chau L Chen

Credential MD

Sex Male

Practice address 8401 Olive Blvd, St Louis, MO, 63132

Phone (314) 997-3430

Fax (618) 345-1113

Enumeration date Oct 11, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C51929 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 35577 (MO) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 53838 (IL) Secondary

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
0006000394	Other	IL	BCBS
112115	Other	MO	BCBS
0409008	Other	-	UHC

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 Chau L Chen?

Chau L Chen 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.