NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William A Cook MD PC

Specialist in North Andover, MA · enumerated 2007 · authorized official William Cook, Doctor.

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

National Provider Identifier

1275661878

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name William A Cook MD PC
Practice address 198 Massachusetts Ave, Suite 102, North Andover, MA, 01845
Fax (978) 682-4756
Enumeration date Mar 2, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

174400000X Specialist Other Service Providers · License 37199 (MA) Primary

Authorized official

Name William Cook
Title Doctor

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 is William A Cook MD PC located?
The practice location on file with NPPES is in North Andover, MA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.