William G Jackson, M.D., LLC
NPI 1821141219 · Gastroenterology Physician · Salisbury, MA
William G Jackson, M.D., LLC is a Gastroenterology Physician organization in Salisbury, MA (NPI 1821141219).
Provider details
- NPI number
- 1821141219
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Jackson, Owner(978) 462-3009
- License
- 57551 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-19
- Last updated
- 2013-03-31
Frequently asked questions
- What is William G Jackson, M.D., LLC's NPI number?
- William G Jackson, M.D., LLC's National Provider Identifier (NPI) is 1821141219, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William G Jackson, M.D., LLC?
- William G Jackson, M.D., LLC is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is William G Jackson, M.D., LLC located?
- William G Jackson, M.D., LLC's practice location on file with NPPES is 46 Toll Rd, Salisbury, MA 01952-1435.
- What is William G Jackson, M.D., LLC's phone number?
- The practice phone number listed in the NPPES registry for William G Jackson, M.D., LLC is (978) 462-3009.
- Who is the authorized official for William G Jackson, M.D., LLC?
- The authorized official listed on William G Jackson, M.D., LLC's NPPES record is William Jackson, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William G Jackson, M.D., LLC's NPI active?
- Yes — William G Jackson, M.D., LLC's NPI (1821141219) is active in the NPPES registry as of the last update on 2013-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.