Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Andrew Y. Chao, Inc

Q: What is the NPI number for Andrew Y. Chao, Inc?

The NPI for Andrew Y. Chao, Inc is 1780802108, a Type 2 (organization) record in the CMS NPPES registry.

Family Medicine Physician in Ballwin, MO · enumerated 2007 · authorized official Dailing Chao, Office Superviser.

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

National Provider Identifier

1780802108

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Registry record

Entity type Organization (Type 2)

Legal business name Andrew Y. Chao, Inc

Practice address 683 Big Bend Rd, Ballwin, MO, 63021

Phone (636) 227-1511

Fax (636) 227-2452

Enumeration date Apr 23, 2007

Last updated in NPPES Aug 7, 2007

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License R2A51 (MO) Primary

Authorized official

Name Dailing Chao

Title Office Superviser

Phone (636) 227-1511

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 Andrew Y. Chao, Inc?

The NPI for Andrew Y. Chao, Inc is 1780802108, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Andrew Y. Chao, Inc?

NPPES lists Dailing Chao (Office Superviser) as the authorized official for this organization.

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