Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joyce K Lo, M.D.

Q: What is the NPI number for Joyce Lo?

The National Provider Identifier (NPI) for Joyce Lo is 1780871426, a Type 1 (individual) record in the CMS NPPES registry.

Pediatrics Physician in Naperville, IL · enumerated 2007.

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

National Provider Identifier

1780871426

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Registry record

Entity type Individual (Type 1)

Name Joyce K Lo

Credential M.D.

Sex Female

Practice address 801 S Washington St, Naperville, IL, 60540

Phone (630) 527-3288

Fax (630) 527-7632

Enumeration date Sep 26, 2007

Last updated in NPPES Mar 27, 2026

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036117186 (IL) Primary

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 is the NPI number for Joyce Lo?

The National Provider Identifier (NPI) for Joyce Lo is 1780871426, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joyce Lo practice?

The practice location on file with NPPES is in Naperville, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-27.