James John, RDN, LDN
NPI 1932670809 · Registered Dietitian · Chicago, IL
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James John, RDN, LDN is a Registered Dietitian provider in Chicago, IL (NPI 1932670809).
Provider details
- NPI number
- 1932670809
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RDN, LDN
- Sex
- Male
- Sole proprietor
- No
- License
- 164.007393 (IL)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2018-12-17
- Last updated
- 2018-12-17
Frequently asked questions
- What is James John's NPI number?
- James John's National Provider Identifier (NPI) is 1932670809, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James John's specialty?
- James John is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is James John located?
- James John's practice location on file with NPPES is 1919 W Taylor St Ste 650, Chicago, IL 60612-7246.
- What is James John's phone number?
- The practice phone number listed in the NPPES registry for James John is (312) 996-3057.
- Does James John accept Medicare?
- James John is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James John's NPI active?
- Yes — James John's NPI (1932670809) is active in the NPPES registry as of the last update on 2018-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.