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William Seng Tan, Sc

Family Medicine Physician in Olympia Fields, IL · enumerated 2024 · authorized official William Tan, President.

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

National Provider Identifier

1497513840

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Registry record

Entity type Organization (Type 2)
Legal business name William Seng Tan, Sc
Practice address 20060 Governors Dr Ste 204, Olympia Fields, IL, 60461
Phone (708) 283-8300
Fax (708) 283-9245
Enumeration date Mar 11, 2024
Last updated in NPPES Mar 11, 2024

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name William Tan
Title President
Phone (708) 283-8300

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

What is the NPI number for William Seng Tan, Sc?
The NPI for William Seng Tan, Sc is 1497513840, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for William Seng Tan, Sc?
NPPES lists William Tan (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-11.