David Gagnon, MD
NPI 1831145259 · Family Medicine Physician · Portsmouth, NH
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Gagnon, MD is a Family Medicine Physician provider in Portsmouth, NH (NPI 1831145259).
Provider details
- NPI number
- 1831145259
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 12177 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 19 Levesque DriveSuite 2Eliot, ME 03903-2079Phone: (207) 451-9600Fax: (207) 451-9603
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2021-08-18
- Certified
- 2021-07-28
Frequently asked questions
- What is David Gagnon's NPI number?
- David Gagnon's National Provider Identifier (NPI) is 1831145259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Gagnon's specialty?
- David Gagnon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Gagnon located?
- David Gagnon's practice location on file with NPPES is 100 Campus Dr Ste 12, Portsmouth, NH 03801-5892.
- What is David Gagnon's phone number?
- The practice phone number listed in the NPPES registry for David Gagnon is (603) 422-8208.
- Does David Gagnon accept Medicare?
- David Gagnon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Gagnon's NPI active?
- Yes — David Gagnon's NPI (1831145259) is active in the NPPES registry as of the last update on 2021-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.