IndividualActive
John Kellogg, DDS
NPI 1679694954 · General Practice Dentistry · South Hadley, MA
John Kellogg, DDS is a General Practice Dentistry provider in South Hadley, MA (NPI 1679694954).
Provider details
- NPI number
- 1679694954
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 12038 (MA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(89/100 index)
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
7 Hadley St
Suite 9
South Hadley, MA 01075-1058
Phone: (413) 538-7546
Fax: (413) 538-7825
Street-level locationGet directions
Mailing address
5 Grant Ave
Southampton, MA 01073-9581
Registry dates
- Enumerated
- 2007-04-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Kellogg's NPI number?
- John Kellogg's National Provider Identifier (NPI) is 1679694954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kellogg's specialty?
- John Kellogg is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is John Kellogg located?
- John Kellogg's practice location on file with NPPES is 7 Hadley St, South Hadley, MA 01075-1058.
- What is John Kellogg's phone number?
- The practice phone number listed in the NPPES registry for John Kellogg is (413) 538-7546.
- Is John Kellogg's NPI active?
- Yes — John Kellogg's NPI (1679694954) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.