OrganizationActive
Marc A. Greer DMD
NPI 1205011046 · General Practice Dentistry · Portsmouth, NH
Marc A. Greer DMD is a General Practice Dentistry organization in Portsmouth, NH (NPI 1205011046).
Provider details
- NPI number
- 1205011046
- Entity type
- Organization
- Primary specialty
- General Practice DentistryDental Providers
- Organization subpart
- No
- Authorized official
- Marc Greer, Owner(603) 436-6922
- License
- 2328 (NH)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
85 Merrimac St
Portsmouth, NH 03801-5124
Phone: (603) 436-6922
Street-level locationGet directions
Mailing address
85 Merrimac Street
Portsmouth, NH 03801-5124
Registry dates
- Enumerated
- 2007-12-28
- Last updated
- 2007-12-28
Frequently asked questions
- What is Marc A. Greer DMD's NPI number?
- Marc A. Greer DMD's National Provider Identifier (NPI) is 1205011046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Marc A. Greer DMD?
- Marc A. Greer DMD is classified in the NPPES registry as General Practice Dentistry (Dental Providers).
- Where is Marc A. Greer DMD located?
- Marc A. Greer DMD's practice location on file with NPPES is 85 Merrimac St, Portsmouth, NH 03801-5124.
- What is Marc A. Greer DMD's phone number?
- The practice phone number listed in the NPPES registry for Marc A. Greer DMD is (603) 436-6922.
- Who is the authorized official for Marc A. Greer DMD?
- The authorized official listed on Marc A. Greer DMD's NPPES record is Marc Greer, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Marc A. Greer DMD's NPI active?
- Yes — Marc A. Greer DMD's NPI (1205011046) is active in the NPPES registry as of the last update on 2007-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.