IndividualActive
James Karl, M.S., R.D.
NPI 1588713960 · Registered Dietitian · Natick, MA
James Karl, M.S., R.D. is a Registered Dietitian provider in Natick, MA (NPI 1588713960).
Provider details
- NPI number
- 1588713960
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- M.S., R.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2546 (MA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(90/100 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
42 Kansas St
Bldng 30
Natick, MA 01760-2642
Phone: (508) 233-5140
Street-level locationGet directions
Mailing address
99 Beals St
Brookline, MA 02446-6010
Registry dates
- Enumerated
- 2007-01-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Karl's NPI number?
- James Karl's National Provider Identifier (NPI) is 1588713960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Karl's specialty?
- James Karl is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is James Karl located?
- James Karl's practice location on file with NPPES is 42 Kansas St, Natick, MA 01760-2642.
- What is James Karl's phone number?
- The practice phone number listed in the NPPES registry for James Karl is (508) 233-5140.
- Is James Karl's NPI active?
- Yes — James Karl's NPI (1588713960) 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.