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William G Jackson, M.D., LLC

Gastroenterology Physician in Salisbury, MA · enumerated 2007 · authorized official William Jackson, Owner.

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

National Provider Identifier

1821141219

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Registry record

Entity type Organization (Type 2)
Legal business name William G Jackson, M.D., LLC
Practice address 46 Toll Rd, Unit B, Salisbury, MA, 01952
Phone (978) 462-3009
Fax (978) 462-0177
Enumeration date Jan 19, 2007
Last updated in NPPES Mar 31, 2013

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 57551 (MA) Primary

Authorized official

Name William Jackson
Title Owner
Phone (978) 462-3009

Other identifiers

Identifier Type State Issuer
9751301 Medicaid MA -
M18969 Other MA BCBS
30213523 Medicaid NH -

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 William G Jackson, M.D., LLC?
NPPES lists William Jackson (Owner) as the authorized official for this organization.
What is the NPI number for William G Jackson, M.D., LLC?
The NPI for William G Jackson, M.D., LLC is 1821141219, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-31.