OrganizationActive
Douglas J Black MD LLC
NPI 1134435613 · Neurology Physician · Portsmouth, NH
Douglas J Black MD LLC is a Neurology Physician organization in Portsmouth, NH (NPI 1134435613).
Provider details
- NPI number
- 1134435613
- Entity type
- Organization
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Douglas Black MD LLC, Owner(603) 427-2577
- License
- 10894 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
875 Greenland Rd
Suite B4
Portsmouth, NH 03801
Phone: (603) 427-2577
Fax: (603) 427-0048
Street-level locationGet directions
Mailing address
875 Greenland Rd
Portsmouth, NH 03801
Registry dates
- Enumerated
- 2010-08-23
- Last updated
- 2011-05-18
Frequently asked questions
- What is Douglas J Black MD LLC's NPI number?
- Douglas J Black MD LLC's National Provider Identifier (NPI) is 1134435613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Douglas J Black MD LLC?
- Douglas J Black MD LLC is classified in the NPPES registry as Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas J Black MD LLC located?
- Douglas J Black MD LLC's practice location on file with NPPES is 875 Greenland Rd, Portsmouth, NH 03801.
- What is Douglas J Black MD LLC's phone number?
- The practice phone number listed in the NPPES registry for Douglas J Black MD LLC is (603) 427-2577.
- Who is the authorized official for Douglas J Black MD LLC?
- The authorized official listed on Douglas J Black MD LLC's NPPES record is Douglas Black MD LLC, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Douglas J Black MD LLC's NPI active?
- Yes — Douglas J Black MD LLC's NPI (1134435613) is active in the NPPES registry as of the last update on 2011-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.