Dennis Hannon, D.D.S.
NPI 1720099120 · Oral and Maxillofacial Surgery (Dentist) · Littleton, NH
Dennis Hannon, D.D.S. is a Oral and Maxillofacial Surgery (Dentist) provider in Littleton, NH (NPI 1720099120).
Provider details
- NPI number
- 1720099120
- Entity type
- Individual
- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)Dental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3475 (NH)
Specialties & taxonomies
Dental Providers
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
- 2006-08-10
- Last updated
- 2010-11-09
Frequently asked questions
- What is Dennis Hannon's NPI number?
- Dennis Hannon's National Provider Identifier (NPI) is 1720099120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Hannon's specialty?
- Dennis Hannon is listed in the NPPES registry with a primary specialty of Oral and Maxillofacial Surgery (Dentist) (Dental Providers).
- Where is Dennis Hannon located?
- Dennis Hannon's practice location on file with NPPES is 262 Cottage St, Littleton, NH 03561-4143.
- What is Dennis Hannon's phone number?
- The practice phone number listed in the NPPES registry for Dennis Hannon is (603) 444-0003.
- Is Dennis Hannon's NPI active?
- Yes — Dennis Hannon's NPI (1720099120) is active in the NPPES registry as of the last update on 2010-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.