Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen W Lai

Q: What is the NPI number for Karen Lai?

The National Provider Identifier (NPI) for Karen Lai is 1851966543, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Lake Zurich, IL · enumerated 2021 · practices at Advocate Health and Hospitals Corporation.

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

National Provider Identifier

1851966543

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Registry record

Entity type Individual (Type 1)

Name Karen W Lai

Sex Female

Practice address 350 Surryse Rd Ste 100, Lake Zurich, IL, 60047

Phone (847) 438-2144

Fax (847) 438-4654

Enumeration date May 25, 2021

Last updated in NPPES Sep 15, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036-176432 (IL) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License DR.0072025 (CO) Secondary

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

Where does Karen Lai practice?

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

What is the NPI number for Karen Lai?

The National Provider Identifier (NPI) for Karen Lai is 1851966543, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-15.