Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Exact Sciences Laboratories, LLC

Clinical Medical Laboratory in Madison, WI · enumerated 2019 · authorized official Stephen Tlachac, Divisional Vp and Controller.

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

National Provider Identifier

1487296307

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Exact Sciences Laboratories, LLC

Parent organization Exact Sciences Laboratories LLC

Practice address 650 Forward Drive, Madison, WI, 53711

Phone (608) 284-5700

Fax (608) 535-8715

Enumeration date Oct 11, 2019

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

Other identifiers

Identifier	Type	State	Issuer
1629407069	Medicaid	WI	-

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 type of organization is Exact Sciences Laboratories, LLC?

Exact Sciences Laboratories, LLC is registered in NPPES as a Clinical Medical Laboratory (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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