IndividualActive
William Blackwood, M.D.
NPI 1346226107 · Family Medicine Physician · Merrimack, NH
William Blackwood, M.D. is a Family Medicine Physician provider in Merrimack, NH (NPI 1346226107).
Provider details
- NPI number
- 1346226107
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 5860 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
382 Daniel Webster Hwy
Merrimack, NH 03054-4152
Phone: (603) 424-4181
Approximate (ZIP-level) locationGet directions
Mailing address
Po Box 808
Nashua, NH 03061-0808
Registry dates
- Enumerated
- 2005-12-22
- Last updated
- 2007-07-25
Frequently asked questions
- What is William Blackwood's NPI number?
- William Blackwood's National Provider Identifier (NPI) is 1346226107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Blackwood's specialty?
- William Blackwood is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Blackwood located?
- William Blackwood's practice location on file with NPPES is 382 Daniel Webster Hwy, Merrimack, NH 03054-4152.
- What is William Blackwood's phone number?
- The practice phone number listed in the NPPES registry for William Blackwood is (603) 424-4181.
- Is William Blackwood's NPI active?
- Yes — William Blackwood's NPI (1346226107) is active in the NPPES registry as of the last update on 2007-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.