James Karl, M.S., R.D.
Registered Dietitian · Natick, MA
James Karl, M.S., R.D. is a registered dietitian with a practice address in Natick, Massachusetts, and NPI 1588713960, issued on Jan 9, 2007. Check the license (Massachusetts 2546, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- James Karl
- Credential
- M.S., R.D.
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 2546 MA
Self-reported in NPPES; status is on the state search - Practice location
- 42 Kansas St, Natick, MA 01760
- Phone
- (508) 233-5140
- Enumerated
- Jan 9, 2007
- Entity
- Type 1 · individual
Also registered at 42 Kansas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tracey Smith, MS, RDRegistered Dietitian1245383777
Verify James Karl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 2546Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
25 registered dietitian records list a Natick practice address
They are 25 of the 1,154 NPPES records with a Natick practice address, and 2,202 registered dietitian records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 25 in Natick → All 2,202 in Massachusetts → Every provider in Natick →
Other registered dietitian records in Massachusetts
- Lynn Abbott, RDBoston, MA1699006601
- Lauren Abeles, RD, RDNNeedham, MA1407621311
- Robin Abourizk, MA, MS, RD, LDNBoston, MA1073846945
- Christine Abrahamian, R.D.Framingham, MA1114149895
- Jenica Abram, MPH, RDN, LDNConcord, MA1891554325
- Jennifer Ackerman, MS, RD, LDN, CDEWinchester, MA1538349097
- Amy Adams, RDBrockton, MA1033976048
- Karin AdamsMarblehead, MA1316531502
- Rachel Adams, RDNMarblehead, MA1770438590
- Sarah Adler, MS RDN LDNBoston, MA1821741489
Common questions
What is James Karl, M.S., R.D.'s NPI number?
James Karl, M.S., R.D.'s National Provider Identifier (NPI) is 1588713960, issued on Jan 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Karl, M.S., R.D. located?
The NPPES record lists a practice address at 42 Kansas St, Natick, MA, 01760. Phone: (508) 233-5140. Providers update this record themselves, so call before visiting.
How can I verify James Karl, M.S., R.D.'s license?
NPPES lists Massachusetts license number 2546, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.