John Sweeney, R.D. , C.D.N.
NPI 1356580021 · Registered Dietitian · Southold, NY
John Sweeney, R.D. , C.D.N. is a Registered Dietitian provider in Southold, NY (NPI 1356580021).
Provider details
- NPI number
- 1356580021
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- R.D. , C.D.N.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 001098-1 (NY)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-02-19
- Last updated
- 2009-02-19
Frequently asked questions
- What is John Sweeney's NPI number?
- John Sweeney's National Provider Identifier (NPI) is 1356580021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sweeney's specialty?
- John Sweeney is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is John Sweeney located?
- John Sweeney's practice location on file with NPPES is 930 Jasmine Ln, Southold, NY 11971-3071.
- What is John Sweeney's phone number?
- The practice phone number listed in the NPPES registry for John Sweeney is (631) 765-1267.
- Is John Sweeney's NPI active?
- Yes — John Sweeney's NPI (1356580021) is active in the NPPES registry as of the last update on 2009-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.