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Exact Sciences Laboratories, LLC

Clinical Medical Laboratory in Madison, WI · enumerated 2013 · authorized official Stephen Tlachac, Divisional Vp and Controller.

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

National Provider Identifier

1629407069

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Registry record

Entity type Organization (Type 2)
Legal business name Exact Sciences Laboratories, LLC
Practice address 145 E Badger Rd Ste 100, Madison, WI, 53713
Phone (608) 284-5700
Fax (608) 284-5701
Enumeration date Nov 6, 2013
Last updated in NPPES Jun 8, 2026

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Stephen Tlachac
Title Divisional Vp and Controller
Phone (608) 284-5700

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

Who is the authorized official for Exact Sciences Laboratories, LLC?
NPPES lists Stephen Tlachac (Divisional Vp and Controller) as the authorized official for this organization.
What is the NPI number for Exact Sciences Laboratories, LLC?
The NPI for Exact Sciences Laboratories, LLC is 1629407069, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-08.